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I am trying to migrate from hsqldb1.7 to 1.8 and
hsqldb complains about a column with the name "count".
I have tried the following:
'count' int default
0,
"count" int default
0,
Is there any work around for this.
----- Original Message -----
Sent: Wednesday, August 24, 2005 11:55
AM
Subject: Re: [Hsqldb-developers] hsqldb -
added features like Right Join support, extract(dayofweek) and another bug-fix
to the aggregates/build-in types problem
You should insert the statements in the file, adding the
control comments that check for the results in the given format. You also need
to add tests for expressions that do not work as they should. If you
don't know how it works, please read the appendix in the Guide on the
test suite.
Fred
----- Original Message -----
Sent: 24 August 2005 14:30
Subject: Re: [Hsqldb-developers] hsqldb
- added features like Right Join support, extract(dayofweek) and another
bug-fix to the aggregates/build-in types problem
We've made a test that works with the adjustment in
_expression_.java. It's:
[
drop table credits if exists;
drop table
accounts if exists;
drop table owners if exists;
create table
owners(
id int not null primary key,
name
varchar(100)
);
create table accounts(
id int not null
primary key,
accountname varchar(100),
accountnr
int,
accounttype int,
ownerid int,
constraint
fk_accounts foreign key (ownerid) references
owners(id)
);
create table credits(
id
int,
accountid int,
amount float,
constraint
fk_credits foreign key (accountid) references accounts(id) on update
cascade
);
insert into owners values(1,'John');
insert into
owners values(2,'Mary');
insert into owners values(3,'Jane');
insert
into accounts values(1,'Bank',5101,0,1);
insert into accounts
values(2,'Cash',5202,0,1);
insert into accounts
values(3,'Giro',5303,0,2);
insert into accounts
values(4,'Invoice',7505,1,1);
insert into credits
values(1,1,1000);
insert into credits values(2,1,2000);
insert into
credits values(3,2,100);
insert into credits
values(4,2,200);
]
select ow.name,ac.accountname from owners ow left
join accounts ac on ((ow.id=ac.ownerid)) and (not(ow.name='Mary'));
The
part between [] is code that's already inculded in TestSelfLeftJoin.txt. The
last line is our test. We're not quite sure how you want us to insert it in
the file, so we send it by mail.
The result should be:
NAME |
ACCOUNTNAME
-----+------------
John | Bank
John | Cash
John |
Invoice
Jane | [Null]
We encountered something strange,
though. When we use the statement select ow.name,ac.accountname from owners
ow left join accounts ac on ((ow.id=ac.ownerid)) and
(not(ac.accountname='Giro')), the row with the value null in the column
accountname isn't displayed. It seems not(ac.accountname='Giro') returns
false when ac.accountname = null. Is this correct or did we find another
bug?
Huug and Marc
We just need more tests for this. Please add some queries to the relevant
TestSelfLeftJoin.txt file that work with this change. Also, it was reported
and confirmed that the change to Select.java to aggregate handling has the
side effect of not allowing things like SELECT ... COALESCE(col, VAL), ...
GROUP BY COALESCE(col, VAL), so this needs more work too.
Fred
----- Original Message -----
From: "Marc de Hoop" <[EMAIL PROTECTED]>
To: <hsqldb-developers@lists.sourceforge.net>
Sent: 24 August 2005 10:47
Subject: Re: [Hsqldb-developers] hsqldb - added features like Right Join
support, extract(dayofweek) and another bug-fix to the aggregates/build-in
types problem
Thank you Fred for looking to our code and implementing it in the newest
version of hsqldb. Nevertheless, we've encountered one little problem.
When using a left join, hsqldb gives an exception when NOT is used in
the join condition. In the last version of the files we sent, we fixed
this by changing _expression_.java at line 3806 by adding || exprType ==
_expression_.NOT. If you don't have a particular reason to not use this
code, could you please add this part to _expression_.java (see also
attached file).
We think everything else works fine.
Thanks again,
Huug Ouwersloot
Marc de Hoop
- TOPdesk
Thanks Marc and Huug,
I have incorporated your changes for DOW and RIGHT OUTER as submitted in
the
patch.
For SET NOT NULL I wrote a new implementation that checks the existing rows
and primary key.
For Aggregates and CASE WHEN, I traced the problem to the original code and
fixed it (in _expression_.updateAggregatingValue()).
Have just committed the changes to the CVS hsqldb-dev module
Fred
----- Original Message -----
From: "fredt" <[EMAIL PROTECTED]>
To: <hsqldb-developers@lists.sourceforge.net>
Sent: 16 August 2005 16:04
Subject: Re: [Hsqldb-developers] hsqldb - added features like Right Join
support, extract(dayofweek) and another bug-fix to the aggregates/build-in
types problem
Thanks for the effort. I have done the first review of the patches:
DOW: This looks fine.
SET NOT NULL: This has yet to check for values in existing rows. We have a
similar test for another alter command and can reuse it.
RIGHT OUTER: This looks fine. I need to check and test it further.
Aggregates and CASE WHEN: The change to Column.java is out of context, as
the Compare method is for comparison of column values of the same time.
Needs more work.
I will review the changes further and add some tests in the next couple of
days.
Fred
----- Original Message -----
From: "Marc de Hoop" <[EMAIL PROTECTED]>
To: <hsqldb-developers@lists.sourceforge.net>
Sent: 15 August 2005 15:14
Subject: [Hsqldb-developers] hsqldb - added features like Right Join
support, extract(dayofweek) and another bug-fix to the aggregates/build-in
types problem
Hello list,
We've made some other updates to hsqldb. We'll be posting them to the
patch tracker in a minute.
We've developed Right Join support, extracting a day of week of a
datetime field ( extract(dayofweek, <fieldname>) which returns the
values: sunday = 1, monday = 2, etc.) and a better version of our
bug-fix to aggregates / build-in types. In the files we'll post, our
previous feature (set [not] null ) is also included since we don't have
got any comment yet.
We'd appreciate it if someone would review our code.
Yours,
Marc de Hoop
Huug Ouwersloot
- TOPdesk
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September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
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