Re: [GENERAL] An amusing MySQL weakness--not!
Michael == Michael Nolan htf...@gmail.com writes: Michael Earlier today I was working on a MySQL database (not by choice, I assure Michael you), Friends don't let friends use MySQL. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 mer...@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc. See http://methodsandmessages.posterous.com/ for Smalltalk discussion -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] NoSQL -vs- SQL
Carlos == Carlos Mennens carlos.menn...@gmail.com writes: Carlos Looking to read your feedback and / or opinions. Here's what I wrote on the Smalltalk Seaside mailing list a few weeks back: I've given a talk a few times about forget the ORM. The slides are up on http://www.slideshare.net/RandalSchwartz/forget-the-orm The key thing that separates a lot of these newer databases is that you can't have all three of consistency, availability, and performance at once... you have to sacrifice something. Traditional SQL databases favored consistency over everything, but who cares if your blog page says read the 6 comments on this item for a couple of seconds when there are really 7 because one just got added. The new databases give options for higher availability or performance at the cost of consistency. Some, like Riak (interviewed at http://twit.tv/floss129), actually let you select on each request how consistent you want the results, thus controlling how fast you get the response. Thus, for the front page of a blog, you can say give me a result that any 1 of the 3 replicas has, but when you finally drill into the comments, you say give me a result that all 3 replicas agree on. Of course, these are all *eventually* consistent on the order of tens or hundreds of milliseconds, but by allowing almost correct results, things are a lot zippier. (It also works that way on write... you can say come back when any 1 replica says it has it or come back only when all 3 replicas confirm write.) So, it's not so much that you get schemaless key/value store (although that's a frequent feature)... it's that these aren't traditional databases in a lot of ways. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 mer...@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc. See http://methodsandmessages.posterous.com/ for Smalltalk discussion -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] Merge replication with Postgresql on Windows?
novnovice == novnovice novnov...@gmail.com writes: novnovice That's a surprising response. But it makes sense, at least as novnovice one perspective. I have written light duty sync systems but novnovice figured that there would be some battle tested postgresql novnovice solution that was more robust than I could cobble novnovice together. As in, if I invest 40 hours learning replication novnovice system X, I'd be further along than if I'd invested the same novnovice 40 hours writing my own system from scratch. It's not simple novnovice stuff. It would still be good to eval whatever canned novnovice solutions are out there. I have googled this topic of course; novnovice among the candidates none seemed to be a great match up with novnovice what I hoped to find. CouchDB is open source, and was designed with this sort of disconnected syncing in mind. You can hear my interview with Jan Lehnardt at http://twit.tv/floss36. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 mer...@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc. See http://methodsandmessages.vox.com/ for Smalltalk and Seaside discussion -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] Simple schema diff script in Perl
hans == hans h...@welinux.cl writes: hans Actually just compare tables and fields, for my current hans requirements is ok, i plan to add the sequences, but no more. I believe SQLFairy (aka SQL::Translator) can canonicalize schemas, and even give DDL to turn one schema into another. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 mer...@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc. See http://methodsandmessages.vox.com/ for Smalltalk and Seaside discussion -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] MySQL versus Postgres
Joshua == Joshua J Kugler jos...@eeinternet.com writes: Joshua I'll add in a me too only to say that I am someone that learns Joshua best by example. Keep in mind though that there are three primary learning modes: - example - concept - structure Do not overemphasize the example mode at the cost of presenting concepts or structure. You need all three. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 mer...@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc. See http://methodsandmessages.vox.com/ for Smalltalk and Seaside discussion -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] Email address column verification foraddress list
Andrus == Andrus kobrule...@hot.ee writes: Andrus This is existing database deployed to many sites and used by many programs. Andrus Re-factoring db and software to add this minor feature seems to be not Andrus reasonable. For 99% of cases field contains only single address. So for most applications written against this database, they're probably assuming only one email address in this column. And then you confuse the issue by putting two or more comma-separated addresses, which are not universally usable when a single address is provided. I sense this code will end up on thedailywtf.com[1] when you leave and your successor discovers what you insanely tried to do. [1] which should be mandatory reading for *all* devs, with the goal of never let my code end up here -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 mer...@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc. See http://methodsandmessages.vox.com/ for Smalltalk and Seaside discussion -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] Clarification regarding array columns usage?
m == m hvostinski makhv...@gmail.com writes: m I would appreciate if someone could clarify the aspects of using array m columns. In general, bad idea. m We need to store up to ten related integer values per row and currently it m is implemented as a varchar column that holds a string that is concatenated m by a trigger function. Something like this: Why? If you were storing these as a daughter table, then you get easy parsing, easy concurrent updating, easy access to aggregate functions. Just like SQL was meant to be used. Stop thinking of tables as Excel sheets. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 mer...@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc. See http://methodsandmessages.vox.com/ for Smalltalk and Seaside discussion -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] What's wrong with this regexp?
Nick == Nick nboutel...@gmail.com writes: Nick SELECT TRUE WHERE '/steps/?step=10' ~ '^\/steps\/\?step=10$' Here's the first clue: merlyn=# select '^\/steps\/\?step=10$'; WARNING: nonstandard use of escape in a string literal LINE 1: select '^\/steps\/\?step=10$'; ^ HINT: Use the escape string syntax for escapes, e.g., E'\r\n'. ?column? --- ^/steps/?step=10$ (1 row) Notice the \'s just disappeared, so it's not gonna have much good for the ?, which will be interpreted as the optional suffix. Even adding 'E' (from the hint) isn't quite enough: merlyn=# select E'^\/steps\/\?step=10$'; ?column? --- ^/steps/?step=10$ (1 row) We need the resulting value to have \? in it, and that's not there yet. So, that's the clue. Don't need \/, but do need \\?, so it looks like this: merlyn=# select E'^/steps/\\?step=10$'; ?column? ^/steps/\?step=10$ (1 row) Aha, and now we have the right string for the regex engine, so let's test that match: merlyn=# select '/steps/?step=10' ~ E'^/steps/\\?step=10$'; ?column? -- t (1 row) Bingo. True. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 mer...@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc. See http://methodsandmessages.vox.com/ for Smalltalk and Seaside discussion -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] Postgre RAISE NOTICE and PHP
Clemens == Clemens Schwaighofer clemens_schwaigho...@e-gra.co.jp
writes:
Clemens Just in my opinion, this regex is completely too large. For basic
Clemens validating something like:
Clemens
^[A-Za-z0-9!#$%'*+-\/=?^_`{|}~][A-Za-z0-9!#$%'*+-\/=?^_`{|}~\.]{0,6...@[a-za-z0-9-]+(\.[a-zA-Z0-9-]{1,})*\.([a-zA-Z]{2,4}){1}$
Clemens works very well
Fails on .mobile TLD. Has a pointless {1} in it, which does
absolutely nothing, providing that the creator of the regex was already
missing a few clues.
That's the problem with these kinds of regex... you test it on what
you know, but you're not consulting the *actual* *internet* specifications
(which have been readily available since the dawn of Internet time).
Either use the regex I pointed to already, or stay with the simpler:
/\...@.*\s/
which will at least not deny anyone with a *perfectly legitimate* email
address from making it into your system.
Or, use your regex *only* in an *advice* category, with the ability
for the user to say yes, I'm really sure this is my address.
Please, for the sake of the net, do the Right Thing here. This is
what I'm arguing for. Anything less than that, and your code deserves
to end up in thedailywtf.com as an example of what *not* to do.
--
Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
mer...@stonehenge.com URL:http://www.stonehenge.com/merlyn/
Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc.
See http://methodsandmessages.vox.com/ for Smalltalk and Seaside discussion
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Re: [GENERAL] Postgre RAISE NOTICE and PHP
Clemens == Clemens Schwaighofer clemens_schwaigho...@e-gra.co.jp writes: Clemens I am not going to defend any regex here, but in my opinion it helps on Clemens what I want to see in email addresses. Clemens Yes it fails on mobile, but I have not yet seen one. And that's the problem. You get near-sighted if you put up a strong validation for only things that *you* have seen. Because, guess what, nobody outside your narrow view can sign up or be a customer. Bad for business. Clemens Probably the best Clemens thing is to test nothing at all. Just accept it ... Exactly! If you don't want to use the 950-character regex, DON'T DO ANYTHING AT ALL. Far simpler. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 mer...@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc. See http://methodsandmessages.vox.com/ for Smalltalk and Seaside discussion -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] Postgre RAISE NOTICE and PHP
Andre == Andre Lopes lopes80an...@gmail.com writes: Andre I'm developing a function with some checks, for example... to check if the Andre e-mail is valid or not. How are you hoping to do this? The regex to validate an email address syntactically is pretty large: http://ex-parrot.com/~pdw/Mail-RFC822-Address.html And no, I'm not kidding. If your regex is smaller than that, you aren't validating email... you're validating something kinda like email. For example, fredbar...@stonehenge.com is a valid email address. (Go ahead, try it... it has an autoresponder.) -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 mer...@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc. See http://methodsandmessages.vox.com/ for Smalltalk and Seaside discussion -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
Re: [GENERAL] pgsql and Mac OS X
Tom == Tom Allison [EMAIL PROTECTED] writes: Tom /System/Library/CoreServices/RemoteManagement/rmdb.bundle/bin/psql That's not on my mac. Must be some bolt-on you installed. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 [EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
Re: [GENERAL] pgsql and Mac OS X
Tom == Tom Lane [EMAIL PROTECTED] writes: Tom What you can do if you want to build PG from source is build normally Tom but only install the client programs. The Fine Manual recommends Tom gmake -C src/bin install Tom gmake -C src/include install Tom gmake -C src/interfaces install Tom gmake -C doc install Tom instead of the usual gmake install. The Randal Notebook recommends: fink install postgresql :-) Then you get automatic startup on boot, usernames added, etc. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 [EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 6: explain analyze is your friend
Re: [GENERAL] cutting out the middleperl
Kenneth == Kenneth Downs [EMAIL PROTECTED] writes: Kenneth This in effect makes the web server a proxy to the database, which Kenneth sounds like what you are after. The P portion for us is PHP, not Kenneth Perl, and it is small though non-zero. It has only two jobs really. Kenneth In the one direction it converts HTTP requests into SQL, and in the Kenneth other it converts SQL results into HTML. How do you control trust? I presume you're not accepting raw SQL queries (or even snippets) over the wire, so you have to have enough server-side mapping code to map domain objects into database objects and domain verbs into queries, and then authenticate and authorize that this verb is permitted by the incoming user. That can't be just a trivial amount of code. That's usually a serious pile of code. And please don't tell me you do all of that client-side. :) -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 6: explain analyze is your friend
Re: [GENERAL] exception handling in plperlu
Douglas == Douglas McNaught [EMAIL PROTECTED] writes:
Douglas my $dbh;
Douglas eval { $dbh = connect(...) };
Since eval returns its value (or undef if $@ has the error), you can shorten
this to:
my $dbh = eval { DBI-connect(...) };
and now either look at $@ (if you want to distinguish exception vs normal) or
just defined $dbh (if you want to know if you have a useful handle or not).
--
Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/
Perl/Unix/security consulting, Technical writing, Comedy, etc. etc.
See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training!
---(end of broadcast)---
TIP 5: don't forget to increase your free space map settings
Re: [GENERAL] postgresql vs mysql
Russ == Russ Brown [EMAIL PROTECTED] writes: Russ Take perl for example. I have still yet to see readable Perl code. I could say the same for greek, and pl/pgsql. You can't read it if you're not familiar with it. Please stop bashing Perl until you've read at least Learning Perl or the equivalent. Please. You have no right. It's pure prejudice, and usually just parroted from others. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 4: Have you searched our list archives? http://archives.postgresql.org/
Re: [GENERAL] php professional
Mark == Mark Walker [EMAIL PROTECTED] writes: Mark Similar issues with Mysql. It's faster, But it doesn't matter *how* fast you get the *wrong* answer. :) -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
Re: [GENERAL] Postgresql 8.1: plperl code works with LATIN1, fail
Michael == Michael Fuhr [EMAIL PROTECTED] writes: Michael Isn't that the situation here? The PL/Perl function body is a Michael string encoded in the database's encoding, which in this case is Michael UTF-8. If that's always the case, then the embedded Perl interpreter should be started in that mode, perhaps by adding -Mutf8 to the arg list of the embedded interpreter. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 5: don't forget to increase your free space map settings
Re: [GENERAL] More grist for the PostgreSQL vs MySQL mill
John == John Meyer [EMAIL PROTECTED] writes: John I'd say fine, but why discuss the flaws of MySQL on a PostgreSQL list? John If you want to correct it, why not put that flaw on a MySQL list. And John yes, I agree, there is a difference between pointing out a legitimate John flaw and simply bashing for bashing's sake. It's a valid discussion here (although better on -advocacy), because it helps me have the right facts to present to clients about whether they should stay with a legacy database in MySQL vs upgrading to a modern PostgreSQL. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 4: Have you searched our list archives? http://archives.postgresql.org/
Re: [GENERAL] cpan perl module - plperlu danger?
A == A M [EMAIL PROTECTED] writes: A [But even Safe.pm has had A dozens of bugs revealed over the years- caveat emptor.] Eeeh? Proof please? That's just FUD-raking. From what I recall, there have been a few clever leakages that have been fixed rather rapidly. few ne dozens. The main problem with Safe is that it's at the wrong granularity (per opcode, not per semantic operation). But let's not be throwing the baby out with the bathwater... Safe is 99.97% of the way there. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 6: explain analyze is your friend
Re: [GENERAL] Oracle purchases Sleepycat - is this the other shoe for MySQL AB?
Tom == Tom Lane [EMAIL PROTECTED] writes: Tom* Change to use no page locks for table scanning operations. Tom Maybe I'm misunderstanding, but that sure sounds like they intend to Tom dumb down BDB so that it no longer works well in concurrent situations, Tom in order to save a few cycles in single-user scenarios. Have MySQL Tom officially abandoned the multi-user case to us? What they lose in usability, they gain back in benchmarks, and that's all that matters: getting the wrong answer really fast. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 4: Have you searched our list archives? http://archives.postgresql.org
[GENERAL] Oracle purchases Sleepycat - is this the other shoe for MySQL AB?
Oracle purchases Sleepycat. From what I understand, BerkeleyDB was the other way that MySQL could have transactions if Oracle decided to restrict InnoDB tables (after purchasing Innobase last year). Does this mean the other shoe has dropped for MySQL AB? -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 2: Don't 'kill -9' the postmaster
Re: [GENERAL] Adding columns to a view
Ingo == Ingo van Lil [EMAIL PROTECTED] writes: Ingo Well, in my case the situation is further complicated by the fact that Ingo adding a column to the view should be done automatically from a trigger Ingo function. I wanted some kind of matrix view that had a column for every Ingo row in a certain table. And whenever a new line was inserted into that Ingo table the view should automatically be extended by one column. This seems wrong, with the same spidey sense tingling that triggered (ugh :) yesterday when I said sending mail from the database is wrong. Your tables shouldn't change during the execution of your application. If they must, you are probably pushing things that belong above SQL (like middleware) and forcing SQL to do them, with all the appropriate trouble that results from that. In general, if it looks difficult to do with PostgreSQL, you're probably heading the wrong direction for good database design. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 6: explain analyze is your friend
Re: [GENERAL] sending mail from Postgres
Ted == Ted Byers [EMAIL PROTECTED] writes: Ted Here is a general question relating to this. The problem involves due Ted diligence related to environmental protection. Consider a distributed Ted application to support this. You have a facility with an Ted environmental monitoring program. Samples are taken from soil, water Ted and air and sent off-site for analysis. Each sample, when analyzed, Ted results in a report sent to the facility's management for their Ted records. However, if the concentration of some contaminant in a Ted sample is above some threshold, a second report, containing the Ted complete analysis results for the sample, is generated and sent to one Ted or more people, both inside and outside the organisation Ted (e.g. engineers within the organization responsible for fixing Ted problems with the facility and engineers at relevant regulatory Ted agencies). One objective is to automate as much of the data management Ted as possible and to ensure that if a problem arises everyone who needs Ted to know about it is notified. The process has to be auditable, so Ted that information about when each step in the process starts is stored Ted in the database, as well as information about when messages are Ted acknowledged (again automated - so when an engineer opens a message Ted about a problem, an acknowledgement is sent to the database without Ted his intervention). Ted I suppose email might work as a means of sending messages, but I was Ted thinking of Sun's JMS instead, working with triggers. I could then Ted create my own thin client to display the reports, perhaps sorting them Ted according to user specified criteria. I can see how to do it within Ted the web tier, or within the client tier (within the labs doing the Ted analyses). The thing is, of the designs I have considered, the one Ted involving triggers with JMS on the main supporting website (with a Ted database back end) is the simplest in terms of deployment, since all Ted interested parties could interact with the application through the Ted internet using a very thin client (perhaps even with an applet within Ted a web page) and I would not need to worry about deploying software to Ted all relevant people/sites. Ted If you faced this problem, what would you do, and why? As already proposed, I'd have a trigger noticing the exceptional condition post a record to an audit log table (and use NOTIFY). Then I'd have a notification process manage watching that table, and send the notices as needed. That's the right level for this. Database triggers should be about adding rows, deleting rows, and modifying values in rows to manage integrity. It's the middleware that's responsible for repackaging that or acting on changed data. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 4: Have you searched our list archives? http://archives.postgresql.org
Re: [GENERAL] sending mail from Postgres
Tony == Tony Caduto [EMAIL PROTECTED] writes: Tony Check out my site at http://www.amsoftwaredesign.com Tony and click on the forums link, I have some examples on how to send a Tony email from a function using plperl, also how to connect to a simple Tony socket server and send messages, plus lots of other function examples, Tony some my own and some from the original function cookbook. I fear for the future. Did someone forget what a database is for? -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 1: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
Re: [GENERAL] Wikipedia help requested, especially non-English speakers
Greg == Greg Sabino Mullane [EMAIL PROTECTED] writes: Greg It's better if you actually create an account. Not only will it make Greg talking about the page easier, you can add the page (and others) Greg to your watchlist to monitor vandalism. And, some Wikipedians uses un-logged-in edits as a high indicator that the work is vandalism, and get prepared to revert. It's odd... being logged in gives you *more* anonymity, not less. :) But the vandals don't understand that... yet. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 2: Don't 'kill -9' the postmaster
Re: [GENERAL] Beyond the 1600 columns limit on windows
Evandro's == Evandro's mailing lists (Please, don't send personal messages to this address) [EMAIL PROTECTED] writes: [I would have replied to your personal address, but I'm not about to copy it from a footer.] Evandro's I'm doing a PhD in data mining and I need more than 1600 columns. I got an Evandro's error message saying that I can not use more than 1600 columns. Evandro's It is happening because I have to change categorical values to binary Evandro's creating new columns. Do you know if oracle can handle it? /me boggles You are doing a PhD in data mining, and you have a table that needs more than 1600 columns? /me gasps What are they *teaching* these days? If you have a design that has more than 20 or so columns, you're probably already not normalizing properly. There just aren't *that* many attributes of a object before you should start factoring parts of it out, even if it means creating some 1-1 tables. In programming, if I ever see someone name a sequence of variables, like thing1 and thing2, I know there's going to be trouble ahead, because that should have been a different data structure. Similarly, I bet some of your columns are foo1 and foo2. Signs of brokenness in the design. Or do you really have 1600 *different* attributes, none of which have a number in their name? That requires a serious amount of creativity. :) -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
Re: [GENERAL] Perl regular expressions
Scott == Scott Marlowe [EMAIL PROTECTED] writes: Scott And you can use perl regex in PHP as well, since it supports the PCRE Scott lib. Well, *almost* Perl. Despite its name, PCRE is a misnomer, since it's not really Perl and it's not entirely compatible. :) Yes, it's a powerful regular expression engine, but Perl regexen can still do some common things that cannot be done with PCRE. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 5: don't forget to increase your free space map settings
Re: [GENERAL] Email Verfication Regular Expression
Cristian == Cristian Prieto [EMAIL PROTECTED] writes: Cristian res = res_query(name, C_IN, T_MX, answer, sizeof(answer)); This incorrectly fails if an address has an A record but no MX record. According to RFC 2821 Section 5: The lookup first attempts to locate an MX record associated with the name. If a CNAME record is found instead, the resulting name is processed as if it were the initial name. If no MX records are found, but an A RR is found, the A RR is treated as if it was associated with an implicit MX RR, with a preference of 0, pointing to that host. So, your function will say no good if the domain has an A record but no MX record, even though the RFC says that's OK and deliverable. Man, is there a lot of bogus knowledge and cargo culting around this subject! -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 5: don't forget to increase your free space map settings
Re: [GENERAL] Email Verfication Regular Expression
Markus == Markus Rebbert [EMAIL PROTECTED] writes:
Markus Am Mittwoch, den 07.09.2005, 11:17 -0400 schrieb Brad Nicholson:
Does anybody have regular expression handy to verfiy email addresses?
Markus
^([a-zA-Z0-9._-]+)\@(([a-zA-Z0-9-]+[.]?){1,}[a-zA-Z0-9-]*+\.){1,}[a-zA-Z]{2,4}$
Markus but i don't think, it's really complete.
Absolutely not. It rejects fred[EMAIL PROTECTED] which is a perfectly
valid email address. (Try it, you'll get my autoresponder.)
Google for RFC 822 and RFC 2822 to see the *real* rules. An
actual regex for an email address is rather large.
--
Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
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Re: [GENERAL] Email Verfication Regular Expression
Steve == Steve Atkins [EMAIL PROTECTED] writes: Steve But, depending on what you're doing, validation may not be a good Steve idea. There are email addresses that are syntactically invalid that Steve are deliverable and in active use. Really? Name one. Or maybe it's just your idea of syntax that's wrong. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 4: Have you searched our list archives? http://archives.postgresql.org
Re: [GENERAL] Email Verfication Regular Expression
Steve == Steve Atkins [EMAIL PROTECTED] writes: Steve So I consider any use of characters outside that set in a hostname or Steve domain name to be invalid. Specifically an underscore is not a valid Steve character, so any use of an underscore in the domain-part of an Steve address that is supposedly an internet address is syntactically Steve invalid. Really? I actually went round and round at a $client who wanted underscores in DNS, and I had to tell them We can't change the entire world... you'll have to rename your hosts. Do you have an example of an underscore host that is publicly addressable? I'd like to look up their MX. :) -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 4: Have you searched our list archives? http://archives.postgresql.org
Re: [GENERAL] Poll on your LAPP Preferences
Google == Google Mike [EMAIL PROTECTED] writes: Google As a PostgreSQL admin or developer, you may be asked to deploy a Linux Google Apache PHP PostgreSQL application. Not me. I'll be deploying an OpenBSD, Apache, PostgreSQL, Perl server. o/~ you down with O-A-P-P? (yeah you know me!) get down with OAPP! (yeah you know me!) o/~ -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 1: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
Re: [GENERAL] To Postgres or not
Neil == Neil Conway [EMAIL PROTECTED] writes: Neil Does MySQL with InnoDB not qualify as an ACID-compliant database? Not when you can store a value that is larger than allowed, and it is silently truncated to be within range. no *I* integrity there. That's regardless of InnoDB or not. MySQL is a toy compared to PostgreSQL. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 5: don't forget to increase your free space map settings
Re: [GENERAL] getting the ranks of items
Harald == Harald Fuchs [EMAIL PROTECTED] writes: Harald Using a temporary sequence for that would avoid naming conflicts. P.S. I'm sure you can wrap it in plperl stored procedure :) Well, yes. I was (falsely?) recalling that there was a pure SQL way to do this though. And the point of doing it as part of the (sub)query is that I was then going to do a further join and select on this. Harald Yes, prepending the ranking column in the application would be Harald more efficient. I wonder whether Randall knows Perl? ;-) If not, I'm sure I could dig up a couple of books to learn it. :) -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 7: don't forget to increase your free space map settings
[GENERAL] getting the ranks of items
I'm probably asking a FAQ, but a few google searches didn't seem to point me in the right place. Is there a simple way with PostgreSQL to assign relative ranks to the result of a query ORDER BY? That is, I want to either have a view that cheaply assigns the ranks, or be able to update a column with the current ranks (yes, I know this latter version is more prone to error). I'm certain there's probably something I can do to laminate an array value to a query result. Am I confused? (Yes!) -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 2: you can get off all lists at once with the unregister command (send unregister YourEmailAddressHere to [EMAIL PROTECTED])
Re: [GENERAL] getting the ranks of items
Matthew == Matthew Terenzio [EMAIL PROTECTED] writes: Matthew On May 3, 2005, at 8:30 PM, Randal L. Schwartz wrote: Is there a simple way with PostgreSQL to assign relative ranks to the result of a query ORDER BY? Matthew What do you mean by ranks? If I order a query by ascending age, the youngest person gets rank 1, the second youngest gets rank 2, the third youngest gets rank 3, and if the fourth and fifth tie, they both get 4, and the next one gets 6. You know, rank? :) -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
Re: [GENERAL] what happened to the website?
Bruno == Bruno Wolff [EMAIL PROTECTED] writes: Bruno http://en.wikipedia.org/wiki/Slashdot_effect Except that wikipedia itself is suffering from the Slashdot effect right now. :) -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 merlyn@stonehenge.com URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 2: you can get off all lists at once with the unregister command (send unregister YourEmailAddressHere to [EMAIL PROTECTED])
Re: [GENERAL] apple uses Postgres for RemoteDesktop 2
Tom == Tom Lane [EMAIL PROTECTED] writes: Tom Yikes. They need to get off of that badly broken PG version, too :-( Tom 7.3.3 was about the worst choice they could have made in the past Tom several years ... At least they make a habit of that. If I recall correctly, OSX 10.1 and 10.2 froze in a bad beta of Perl 5.6.0 prerelease. Now it's been updated to at least a normal release (5.8.1, still a year behind, but that's life). -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 [EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faqs/FAQ.html
Re: [GENERAL] High Reliability without High Availability?
Al == Al Cohen [EMAIL PROTECTED] writes: Al Is there a log file that does or could do this? Or some internal Al system table that we could use to generate something? I may be just mis-remembering, but wasn't there an embedded-Perl solution that connected up as triggers for all your changing items to either write a log, or use DBI to actually update the second database? -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 [EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 6: Have you searched our list archives? http://archives.postgresql.org
Re: [GENERAL] Postgress and MYSQL
Tom == Tom Lane [EMAIL PROTECTED] writes: Tom Bob Powell [EMAIL PROTECTED] writes: I find the recent articles in various trade publications a little disturbing due to the lack of PostgrSQL mention. Tom You are seeing the effects of MySQL AB's large marketing budget; Tom they have the time and money to cause such articles to appear. Tom I'm not sure there is much we can do to counter this in the short run. Tom (I do wonder how quickly they are running through that $19 mil Tom investment though ...) My new buzz-meme (pass it along)... You're still using MySQL... that's so 90's! :-) Seriously, the space occupied by MySQL has been encroached by SQLite from the low end (if you just want SQL access to a data file, including transactions) and PostgreSQL from the high end (when you want a full-featured database). I think they've completely overlapped at this point (especially when I just discovered yesterday that you can register Perl callbacks for user-defined functions and aggregates in DBD::SQLite!), so MySQL really doesn't have much of a win at either end. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 [EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faqs/FAQ.html
Re: [GENERAL] Is my MySQL Gaining ?
Jan == Jan Wieck [EMAIL PROTECTED] writes: Jan It seems to concern MySQL now at least. They have changed their minds Jan on many enterprise features that PostgreSQL has for years. The Jan strategy of misguiding people like you don't need foreign keys, you Jan don't need stored procedures, yadda yadda triggers, blah blah Jan views didn't work forever. So they have to add or propose those Jan features one by one. I've noticed a similar strategy in the PHP vs Perl dimension. PHP started out being simple and fast and easy to learn by throwing off all of the complexities of Perl that weren't needed. Slowly and steadily, lagging about 3 to 10 years behind, PHP has adding one-by-one all those weird Perl features, but doing a poor job of integrating them. So, you can get PHP for 2007 already. It's called Perl, and it's probably already installed on your box. PostgreSQL is where MySQL will be in five years might be a good catchmeme. Anyone wanna run with it? -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 [EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 7: don't forget to increase your free space map settings
Re: [GENERAL] between
Martin == Martin Marques [EMAIL PROTECTED] writes: Martin A link to the URL above in the SELECT page? Uh, do you also want a link to installing PostgreSQL there too? After all, you have to install Pg before you can use the SELECT operator. It's not any more related to SELECT than it is anything else. It's a part of an expression. Expressions are used many places and described one place. That's the nature of documentation. Maybe I'm sounding grouchy, but at some point, you do the common sense thing. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 [EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
Re: Triggers, Stored Procedures, PHP. was: Re: [GENERAL] PostgreSQL
Jay == Jay O'Connor [EMAIL PROTECTED] writes: Jay Python also reads more obviously, in that it doesn't have a lot of Jay 'default context' ($_) and 'scalar context versus array context' and Jay cute shortcuts and stuff floating around, which makes it easier to Jay read, and more importantly easier for teams to read. It also has some things which are functions, and others which are methods, with no rhyme or reason except for a historical basis. And that's just the beginning. (Why are tuples read only? Sorry, cheap shot.) Please don't paint Python as nice and regular. It has nearly as many odd things to know as Perl does. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 [EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faqs/FAQ.html
Re: [GENERAL] Humor me: Postgresql vs. MySql (esp. licensing)
Shridhar == Shridhar Daithankar [EMAIL PROTECTED] writes: Shridhar Yeah.. like inserting a biiig number in integer field in a transaction Shridhar without error and not getting it back after commit.. or accepting Shridhar '00-00-00 00:00:00' as a valid datetime stamp.. something like that.. Shridhar How much deviation is that from ACID? 180 degrees...:-) Unverified, but you can apparently try to store a huge number into a short integer, and MySQL silently truncates to maxint. No error. No warning. No place for it in a real business environment. :( -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 [EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
Re: [GENERAL] Birthsday list
Svenne == Svenne Krap [EMAIL PROTECTED] writes:
Svenne I kind of found the answer myself ... here are some snipplets ...
Svenne the table and the data :
Svenne CREATE SEQUENCE friends_friendid_seq start 1 increment 1 maxvalue
Svenne 2147483647 minvalue 1 cache 1 ;
Svenne CREATE TABLE friends (
Svenne friendid integer DEFAULT
Svenne nextval('friends_friendid_seq'::text) NOT NULL,
Svenne friendname character varying,
Svenne dateofbirth timestamp with time zone,
Svenne Constraint friends_pkey Primary Key (friendid)
Svenne );
Svenne COPY friends FROM stdin;
Svenne 1 Tony1978-01-28 00:00:00+01
Svenne 2 Gary1966-06-04 00:00:00+01
Svenne 3 Jodie 1979-01-11 00:00:00+01
Svenne \.
Svenne My query, works but looks clumbersome.. can it be made smarter ?
Svenne select * from (
Svenne (select *,date_part('year',now()) - date_part('year', dateofbirth) as
Svenne age, date_part('doy',dateofbirth)-date_part('doy',now()) as daystogo
Svenne from friends where date_part('doy',dateofbirth) =
Svenne date_part('doy',now()))
Svenne union
Svenne (select *,date_part('year',now()) - date_part('year', dateofbirth ) +1
Svenne as age, date_part('doy',dateofbirth)-date_part('doy',now()) +
Svenne date_part('day', (now() + '1 year'::interval)::timestamp - now()) as
Svenne daystogo from friends where date_part('doy',dateofbirth)
Svenne date_part('doy',now(
Svenne r order by r.daystogo
yeah, how about a little modular arithmetic?
select friendname, dateofbirth from friends
order by (366 + date_part('doy', dateofbirth) - date_part('doy', now())) % 366;
--
Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
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Re: [GENERAL] [HACKERS] Tupple statistics function
Thurstan == Thurstan R McDougle [EMAIL PROTECTED] writes: Thurstan In general EXPLAIN could be expanded to be a command to Thurstan return an explanation and stats of many items. There could Thurstan also be EXPLAIN that only shows fields and EXPLAIN VERBOSE Thurstan that also shows more detail such as stats (as that tends to Thurstan take more time to collect). It would also be interesting to take everything that psql does and put each of them into a view so that it could be queried directly. There's no reason that the magic should reside in client-side code. It'd also make psql much simpler. :) I mean, why is \d anything other than select * from pg_table_view;, with all the logic to compute that table in the view code? Unless having a view on the server is expensive. Is a server view expensive if nobody calls it? I mean, it's not maintained like an index, is it? -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 [EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html
Re: [GENERAL] Function Help
Brian == Brian C Doyle [EMAIL PROTECTED] writes:
Brian Hello all,
Brian I am working on a function to determine the date of the first saturday
Brian of the month.
Brian Currently I have:
Brian CREATE FUNCTION first_saturday(date)
Brian RETURNS date
Brian AS '
Brian Select CASE WHEN date_part(\'dow\',\'$1\'::DATE)=0 THEN date(\'$1\')+6
Brian WHEN date_part(\'dow\',\'$1\'::DATE)=1 THEN date(\'$1\')+5
Brian WHEN date_part(\'dow\',\'$1\'::DATE)=2 THEN date(\'$1\')+4
Brian WHEN date_part(\'dow\',\'$1\'::DATE)=3 THEN date(\'$1\')+3
Brian WHEN date_part(\'dow\',\'$1\'::DATE)=4 THEN date(\'$1\')+2
Brian WHEN date_part(\'dow\',\'$1\'::DATE)=5 THEN date(\'$1\')+1
Brian WHEN date_part(\'dow\',\'$1\'::DATE)=6 THEN date(\'$1\')+0
Brian END'LANGUAGE 'sql'
Brian I get an error that $1 is not a valid date. But I want that to be the
Brian variable I enter...
Brian what Am I doing wrong???
Working too hard? :)
why not just:
My_Col + 6 - date_part('dow', My_Col)
Don't even need a function for that. :)
--
Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
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Re: [GENERAL] creating user table
Chris == Chris [EMAIL PROTECTED] writes:
Chris Hi,
Chris This one is more for the developers, but other comments welcome.
Chris Since we can't create a table called user in a normal database due to
Chris the reserved keyword problem,
False precondition!
template1=# create database demo;
CREATE DATABASE
template1=# \c demo
You are now connected to database demo.
demo=# create table user (name text, age int);
CREATE
demo=# \d
List of relations
Name | Type | Owner
--+---+
user | table | merlyn
(1 row)
demo=# \d user
Table user
Attribute | Type | Modifier
---+-+--
name | text|
age | integer |
demo=# insert into user values ('Randal', 39);
INSERT 1034607 1
demo=# insert into user values ('Russ', 38);
INSERT 1034608 1
demo=# insert into user values ('Ron', 35);
INSERT 1034609 1
demo=# select * from user order by age;
name | age
+-
Ron| 35
Russ | 38
Randal | 39
(3 rows)
demo=#
You can quote any reserved word to get any name you want.
You just need to think of the table name of demo as _ demo _.
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Re: [GENERAL] PL/java?
Gunnar == Gunnar Rønning [EMAIL PROTECTED] writes: Gunnar In the end there is however no proof to claim that Java applications Gunnar are faster than mod_perl applications. I'll settle for that. Most of the time I've seen benchmarks, it's been more the skillset of the programmers at stake rather than the languages. Gunnar But having Java in the PgSQL backend would be nice for some, Gunnar regardless of how well Java compares to Perl. Yes, I can support that. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 [EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
Re: [GENERAL] PL/java?
Alex == Alex Knight [EMAIL PROTECTED] writes: Alex You did not read what I wrote very well. First, I said that mod_perl was Alex slower than most any j2ee application. If you knew what j2ee was, Alex you'd know that it's generally limited to server-side internet apps Alex like servlets, jsps, etc... If you'd just stop saying things that can't be backed up, I wouldn't have to keep responding. Where is your proof that mod_perl is slower than most any j2ee application? Alex However, in some cases, Java does things better (just like Alex perl does things faster than Java in certain situations). I'm still waiting for Java does things better to be demonstrated. Alex But perl has had the most uses for so many years because it is Alex easy to learn, not truely object oriented Perl is a hybrid OO language, just like Java. Now if you compare both of them to Smalltalk, I see your point. But Java has primitive types that cannot be subclassed or extended, just like Perl. There's really no difference. Perhaps you've not read Object Oriented Perl by Damian Conway, to see just how rich Perl's object model is, even compared to Java and others. Alex (atleast the past few Alex years have been that way), does not require compiling to Alex simplify the execution process (i.e. fully interpreted), etc. Perl is no more interpreted than Java. Perl's compiler translates the entire program down to bytecodes, and the bytecodes are then executed by the Perl Virtual Machine, just like Java. (I won't bring up any benchmarks here... it's unfair to Java. :) See... it's the nonsense you keep spouting that makes me want to slap you silly. Get a clue. Perl is a serious, mission-critical language, being actively developed by hundreds of people who depend on it to remain stable, fast, and useful. I've seen both. Java has its place. Perl has its place. Stop dissing Perl, because you are apparently unaware of what is actually going on. I guess that would make you a language bigot. Alex Expand on your enterprise application. A true enterprise application Alex takes more than 3 days time to design and implement. Most real Alex enterprise applications have multiple layers of logic, etc. I don't Alex consider a script that queries a database for a password by 100,000 Alex people a day to really be considered as Enterprise either. And many enterprise applications are completely in Perl. cbs.sportsline.com is 90% Perl. Etoys.com was 100% Perl. imdb.com is 100% perl. valueclick.com is 100% Perl. Amazon.com does all their backend processing in Perl. Boeing uses Perl in every step of their cad/cam process... every number defining the 777 airplane was passed through Perl. Alex If I was new to programming, and I started preaching Java Alex right off the bat, this conversation wouldn't be warranted. In Alex fact, I run into these types of Java developers who go around Alex saying they think Java is the best language ever, etc etc but Alex don't really have the experience to make that claim. You smell a bit like that now though, mostly through your ignorance of Perl. Maybe you're not unfounded pro Java, but you are unfounded anti Perl. And I won't allow that here. I'll certainly permit Perl to lose on its technical merits, but I won't let Perl lose through your ignorance of what it actually can be or do. -- Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095 [EMAIL PROTECTED] URL:http://www.stonehenge.com/merlyn/ Perl/Unix/security consulting, Technical writing, Comedy, etc. etc. See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training! ---(end of broadcast)--- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
