I got the same errors where the python application
would just crap out. For some time I thought it was a
problem with apsw. I migrated to apsw frompysqlite.
I searched all over but then did a .dump of my
database and recreated it and the error went away.
Pretty scary though and I never
With only 20,000 rows it is my intuitive feel that a linear search on a
memory resident table (like a mmap'd shared file) would be faster than
having a B-Tree setup like Sqlite which would often be doing straight
row searches anyway. Joins are not more complex, and perhaps less, than
using
Radomyselskiy, Mikhail (IT) wrote:
We need an engine that runs completely in
memory without disk use and that doesn't have to be thread-safe
Mikhail,
You should be able to use an SQLite memory database. Use the sqlite
command shell by starting sqlite3 without a database filename
That's not a bad idea and we thought about it,
but...
With large number of attributes to be compared (over 100 in some
cases),
possible numeric comparison (value between 10 and 50),
joins to other tables (comparisons might include indirect
comparisons like ratings Aaa,
You might do better not to use any database manager and to place your
rules in a flat file which you memory map into your program, then use s
REGEX regular expression search (or simpler string search) to pop out a
list of pointers to the rules. That would be blindingly fast and memory
A neat way to do what you want is to set up a table cross-referencing
State mnemonics like CA with California, and then use a lookup as
suggested by an earlier correspondent.
Finally raise a VIEW containing the complex SELECT statement so that you
can do your query with the simplest SQL. If
Hi,
I would like to use SQLite for processing of rules that look like
WHERE clauses (so if i fill a table with attributes and outputs i can
run "SELECT WHERE ")
Looking at the speed comparison (and i realize its not uptodate but
for the lack of better info) it seems a lot of time is
Chris Gurtler wrote:
I'm pretty new to SQLite, and am just looking for a few pointers on SQL
queries, this is an example of a query from a crapy MS Access database
that I want to convert to SQLite, but it fails. it says c.group_id does
not exist.
I'm wondering if anyone has got some tips on
Hello dr. Hipp,
hello sqlite users,
I'm trying to build sqlite from cvs and I'm experiencing problems with
generating parse.h and parse.c:
I've compiled lemon.exe and it succesfully generated parse.c and parse.h
by using "lemon.exe parse.y".
The problem I'm facing is that the generated parse.c
Hi,
Using PySQLite 2.0.4 I get a crash with the following sequence, starting
from no database. If the page_size pragma is removed it works OK.
Reproducible under Windows 2K and XP. Running Python 2.4.1.
pragma short_column_names=0
pragma full_column_names=0
PRAGMA page_size = 8192
CREATE
Hello,
I saw that ROUND (0) is not equal to 0. It took some time to understand this.
In the first place it is that the outcome of ROUND is always of type text. That
is necessarily so, as a decimally rounded number has no exact binary
representaion. For instance 1.23 is really 1.22 So
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Firman Wandayandi wrote:
> Can anyone describe me, more detail list of which are data types
> currently supported by SQLite, on both
> http://sqlite.org/datatypes.html & http://sqlite.org/datatype3.html
> had gave me some or maybe all (not sure),
Hi,
We have sqlite ported onto an Arm7 processor based embedded application
with no FloatingPoint support. In our previous versions of sqlite (we were
till now using 3.0.8 which does not have AutoIncrement functionality) we
were switching OFF the double variables and values through
Hi,
I'm pretty new to SQLite, and am just looking for a few pointers on SQL
queries, this is an example of a query from a crapy MS Access database that
I want to convert to SQLite, but it fails. it says c.group_id does not
exist.
I'm wondering if anyone has got some tips on multiple joins,
Hello, SQLite developers!
Sorry for my bad English.
I use SQLite (great program!), and encounter some unicode problems.
I think, this problems not with dbms kernel, but with command-line
utilite.
So far as SQLite supports unicode, I want at least enter russian
strings into table rows and
Here's a way to go with pure SQL;
create table cars (recid,qty,make,model,year,engine,color,state,price);
create table states (abbr,name);
insert into states values("ca","California");
insert into cars values(1,5,"Ford","Bandit",2005,2000,"Red","ca",5000);
select make,(select name from states
Can anyone describe me, more detail list of which are data types
currently supported by SQLite, on both
http://sqlite.org/datatypes.html & http://sqlite.org/datatype3.html
had gave me some or maybe all (not sure), because when I create a
table with a SMALLINT column, seems SQLite is ok. So I
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