Hi List,
I want to make this query faster, for this, i created indexes for
Entity_Id and grpuid and also used a pragmas :
PRAGMA journal_mode = MEMORY;
PRAGMA synchronous = OFF;
PRAGMA temp_store = MEMORY;
PRAGMA count_changes = OFF;
PRAGMA cache_size = 12000;
I also do Begin
Did you tried using the pragmas
refer sqlite documentation for pragmas
http://www.sqlite.org/pragma.html
Atul
souvik.datta wrote:
Update tableName set Flag=1 where Filename=FileName;
The updates taking huge amount of time. I tried to wrap these updates
within transactions (50
souvik.datta wrote:
Update tableName set Flag=1 where Filename=FileName;
Check index presence on Filename column and still make updates in 1 large
transaction.
-
Best Regards.
Max Kosenko.
--
View this message in context:
http://www.nabble.com/Making-Update-fast-tp25269409p25273296.html
1. *re OID vs ROWID:* I don't understand your statement that the
name of a result column is undefined. The documentation clearly
states A column name can be any of the names defined in the
CREATE TABLE statement or one of the following special
identifiers: *ROWID*,
Nicolas Williams wrote:
On Wed, Sep 02, 2009 at 05:44:38PM -0400, Shaun Seckman (Firaxis) wrote:
I'm just curious how difficult it would be to add
support for booleans in SQLite. This would most likely involve adding a
new type affinity as well as adding true and false
2. *re integer vs string:* Version 3 differs from version 2 here.
Version 2 was declared to be typeless and Select Where column =
1 behaved identically with Select Where column = '1'. Version
3 behavior is different in that the two previous examples produce
different
2. *Quotes in SELECT*: Specification of Field='3' failed to find
hits; Field=3 (i.e. without quotes) was required.
This is a feature, not a bug. SQLite 3.x distinguishes between
integers and strings and does not consider them equal to one another.
You might have some rows where
Pavel Ivanov wrote:
2. *Quotes in SELECT*: Specification of Field='3' failed to find
hits; Field=3 (i.e. without quotes) was required.
This is a feature, not a bug. SQLite 3.x distinguishes between
integers and strings and does not consider them equal to one another.
You
Perhaps the fact that my column definitions declared no
typing has an effect here?
Yes, that means that your columns have no affinity, all data stored in
it as you give and no conversions done during insertions and
comparisons:
sqlite create table t (n, t);
sqlite insert into t values (1,
Pavel Ivanov wrote:
2. *re integer vs string:* Version 3 differs from version 2 here.
Version 2 was declared to be typeless and Select Where column =
1 behaved identically with Select Where column = '1'. Version
3 behavior is different in that the two previous examples
Pavel Ivanov wrote:
Perhaps the fact that my column definitions declared no
typing has an effect here?
Yes, that means that your columns have no affinity, all data stored in
it as you give and no conversions done during insertions and
comparisons:
sqlite create table t (n, t);
Yes, I know how it works. But that seems to contradict the
documentation. The first field of the record inserted should have a type
of numeric, as types are associated with the data not with the column
declaration. So the phrase Where n = '1' should fall into the first
bullet case
Rod, type
Umm,
At 05:16 03/09/2009, you wrote:
´¯¯¯
Thanks for reminding me: A thing's value is generally proportional to
its cost. And the attitude of its support team figures in there, too.
-R.
Whether _you_ consider them problems or not, they were certainly
problems for me, migrating a working
*re applied affinity:* If that is what is meant, then the document
should say it, instead of leaving it to the reader's imagination.
Since column typing was superfluous in version2, it seems that the
version3 adoption of typing, as defined, would perhaps be an upgrade
compatibility
Whoa! All I did was report two problems that I encountered when
upgrading from version2 to version3! I was told that my problems were
not problems at all; In fact one of them was a feature! That sounds
kinda arrogant to me.
As far as freezing the language, I made no such statement or
On Sep 3, 2009, at 10:43 AM, Rod Dav4is wrote:
*re applied affinity:* If that is what is meant, then the document
should say it, instead of leaving it to the reader's imagination.
Since column typing was superfluous in version2, it seems that the
version3 adoption of typing, as
At the risk of throwing gasoline on a fire...
I didn't react badly to Rod's original post. Yes, it could have been
worded more diplomatically, but why so thin-skinned about it? He
reported some issues. The response was that they weren't issues. Can
you see how that might be construed as
On Thu, Sep 3, 2009 at 10:30 AM, Jim Showalterj...@jimandlisa.com wrote:
At the risk of throwing gasoline on a fire...
I didn't react badly to Rod's original post.
The original post was fine. It was the third post that was inflammatory.
Yes, it could have been
worded more diplomatically,
I have a database table that holds about 20,000 codes. Each code can be used
by several different user groups. I could add a column to the database
table for each user group to indicate which codes that particular group has
access to. But, I have over 100 different groups! Can anyone suggest
On Thu, Sep 03, 2009 at 10:57:13AM -0700, karenebs scratched on the wall:
I have a database table that holds about 20,000 codes. Each code can be used
by several different user groups. I could add a column to the database
table for each user group to indicate which codes that particular
table groups ( group_id, group_descri )
table access ( rela_group, rela_code)
--- El jue 3-sep-09, karenebs ka...@echobasesoftware.com escribió:
De: karenebs ka...@echobasesoftware.com
Asunto: [sqlite] Defining user groups in SQLite table
Para: sqlite-users@sqlite.org
Fecha: jueves, 3 de
Hi All - We have a new utility in our environment using SQLite and I was
wondering if there was a way to dump all the database into Access so we
can create reports on the databases?
Thanks,
Ryan Pighin
___
sqlite-users mailing list
The ODBC connector for SQLite will allow you to connect Access to
SQLite without having to import/export:
http://www.ch-werner.de/sqliteodbc/
Regards,
- Robert
On Thu, Sep 3, 2009 at 2:33 PM, Pighin, Ryanpigh...@rvh.on.ca wrote:
Hi All - We have a new utility in our environment using SQLite
On Thu, Sep 03, 2009 at 10:57:13AM -0700, karenebs wrote:
I have a database table that holds about 20,000 codes. Each code can be used
by several different user groups. I could add a column to the database
table for each user group to indicate which codes that particular group has
access to.
Atul_Vaidya
atul.vai...@prototechsolutions.com wrote:
I want to make this query faster, for this, i created
indexes for Entity_Id
Entity_Id doesn't appear anywhere in the query. How is an index on it
supposed to help?
and grpuid
Which of them? There are three tables, all having a
Well,
Pighin, Ryan wrote:
Hi All - We have a new utility in our environment using SQLite and I was
wondering if there was a way to dump all the database into Access so we
can create reports on the databases?
Why not attach the SQLite database into Access and create your reports?
That way
Creating a new thread for this topic... I'm confused by affinity. Here is my
munging of Pavel's examples from another thread:
--- sql.txt ---
.echo on
create table d (i);
create table n (i numeric);
create table i (i integer);
insert into d values (1);
insert into n values (1);
insert into i
You can convert a V1 database into a V4 database by opening it,
setting the legacy PRAGMA to false, and the VACUUMing the database.
You can convert back in a similar way. In fact, be cautious of
that.
If you have a build that defaults to V1, make sure you turn the
legacy PRAGMA off
I would test it, but When the pragma is issued with no argument, it
returns the setting of the flag. This pragma does not tell which file
format the current database is using. It tells what format will be
used
by any newly created databases.
Hmm. I can't get the pragma to return a value at
Wilson, Ronald rwils...@harris.com wrote:
Creating a new thread for this topic... I'm confused by affinity.
Here is my munging of Pavel's examples from another thread:
--- sql.txt ---
.echo on
create table d (i);
create table n (i numeric);
create table i (i integer);
insert into d values
On Sep 3, 2009, at 3:30 PM, Wilson, Ronald wrote:
SQLite version 3.6.10
Enter .help for instructions
Enter SQL statements terminated with a ;
sqlite .read sql.txt
create table d (i);
create table n (i numeric);
create table i (i integer);
insert into d values (1);
insert into n values
Sigh, I thought I had read all the applicable sections. Thanks Igor.
Though, now I'm curious what your opinion on this is:
SQLite version 3.6.10
Enter .help for instructions
Enter SQL statements terminated with a ;
sqlite create table none (i NONE);
sqlite insert into none values(1);
Hi, Ronald!
You seem to mix terms affinity, data type and declared type of
column again.
The default affinity is NONE if left unspecified.
Mixed statement which is right and wrong in some sense. If you look
closer to 2.1 of cited document you'll see that the default affinity
is NUMERIC (item #
On Thu, Sep 03, 2009 at 03:57:14PM -0400, Wilson, Ronald wrote:
Hmm. I can't get the pragma to return a value at all.
SQLite version 3.6.10
Enter .help for instructions
Enter SQL statements terminated with a ;
sqlite pragma default_file_format;
Wrong pragma. Try:
sqlite pragma
Yeah it seems confusing but once you get your head around it you're ok. The
documentation is all there, and I'm sure there are a million threads on the
archive about the same thing. If I had the time I'd write an 'affinity for
dummies' section for the documentation. In the end, I think a lot
Wilson, Ronald rwils...@harris.com wrote:
Sigh, I thought I had read all the applicable sections. Thanks Igor.
Though, now I'm curious what your opinion on this is:
SQLite version 3.6.10
Enter .help for instructions
Enter SQL statements terminated with a ;
sqlite create table none (i
Though, now I'm curious what your opinion on this is:
I don't have an opinion on this. Should I? Is there a question in
there
somewhere?
Igor Tandetnik
The documentation refers to the column affinities TEXT, NUMERIC,
INTEGER, REAL, and NONE, but NONE is not identified as a column
Wrong pragma. Try:
sqlite pragma legacy_file_format;
1
sqlite pragma legacy_file_format=0;
sqlite pragma legacy_file_format;
0
sqlite
Thanks. I'm going to stop talking for a few days now. Enough gaffs for
one day.
Ron Wilson, Engineering Project Lead
(o) 434.455.6453, (m)
Wilson, Ronald rwils...@harris.com wrote:
Though, now I'm curious what your opinion on this is:
I don't have an opinion on this. Should I? Is there a question in
there somewhere?
The documentation refers to the column affinities TEXT, NUMERIC,
INTEGER, REAL, and NONE, but NONE is not
On Thu, Sep 03, 2009 at 04:21:28PM -0400, Wilson, Ronald wrote:
Wrong pragma. Try:
Thanks. I'm going to stop talking for a few days now. Enough gaffs for
one day.
Heh. But, actually, why doesn't SQLite3 produce an error when unknown
pragmas are used? Wouldn't that be the right thing to
Heh. But, actually, why doesn't SQLite3 produce an error when unknown
pragmas are used? Wouldn't that be the right thing to do? I would
thinks so.
I think the docs say unknown pragmas are treated like no-ops. (yeah, I
read the docs.)
RW
Ron Wilson, Engineering Project Lead
(o)
The documentation refers to the column affinities TEXT, NUMERIC,
INTEGER, REAL, and NONE, but NONE is not identified as a column
affinity by the SQL parser, which treats it as NUMERIC.
Column affinity is not part of the syntax - declared type is. The
affinity is inferred from the type.
On 3 Sep 2009, at 1:38am, P Kishor wrote:
well, I think the problem is with the sqlite3 command line tool.
I agree. I just checked it with OS X 10.6, which comes with SQLite
version 3.6.12, and got the same problem: you can't type accented
characters into the sqlite3 tool. So I guess the
On 3 Sep 2009, at 6:57pm, karenebs wrote:
I have a database table that holds about 20,000 codes. Each code
can be used
by several different user groups. I could add a column to the
database
table for each user group to indicate which codes that particular
group has
access to.
I'm trying to run a .NET program on Linux using MONO that makes use of SQLite
and nHibernate. I've got the managed code only System.Data.SQLite.dll and use
the sqlite3.dll on Vista and my program and tests run fine. However, I don't
know where to put the sqlite-3.6.17.so shared library, or if
On Thu, Sep 03, 2009 at 03:27:38PM +0100, Simon Slavin wrote:
On 3 Sep 2009, at 1:38am, P Kishor wrote:
well, I think the problem is with the sqlite3 command line tool.
I agree. I just checked it with OS X 10.6, which comes with SQLite
version 3.6.12, and got the same problem: you can't
I'm having a performance problem with sqlite, where a particular
select operation (involving a join) seems to be taking much longer
than I'd expect (by an order of magnitude). I've been through several
iterations of searching for information on the web, adjusting the
table structures, and
On Thu, Sep 03, 2009 at 03:47:50PM -0400, Wilson, Ronald scratched on the wall:
You can convert a V1 database into a V4 database by opening it,
setting the legacy PRAGMA to false, and the VACUUMing the database.
If this is true, the documentation doesn't even hint at the feature:
This
Subject: [sqlite] shared library location on Linux question
I'm trying to run a .NET program on Linux using MONO that makes use of
SQLite and nHibernate. I've got the managed code only
System.Data.SQLite.dll and use the sqlite3.dll on Vista and my program
and tests run fine. However, I
Jay A. Kreibich wrote:
Integer values between -128 and 127 use only a single byte of storage above
and beyond the header size that all values have.
Not quite. Values between 0 127 use 1 byte of storage. Negative
values use the full 9 bytes in my experience. (I'm setting aside the
On Sep 3, 2009, at 7:25 PM, Mark Spiegel wrote:
Jay A. Kreibich wrote:
Integer values between -128 and 127 use only a single byte of
storage above and beyond the header size that all values have.
Not quite. Values between 0 127 use 1 byte of storage. Negative
values use the full 9
D. Richard Hipp wrote:
You are both right and both wrong. There are two different integer
representations used in SQLite.
(1) varint or variable length integer is an encoding of 64-bit
signed integers into between 1 and 9 bytes. Negative values use the
full 9 bytes as do large
On Sep 3, 2009, at 8:25 PM, Mark Spiegel wrote:
D. Richard Hipp wrote:
You are both right and both wrong. There are two different integer
representations used in SQLite.
(1) varint or variable length integer is an encoding of 64-bit
signed integers into between 1 and 9 bytes. ...
(2)
D. Richard Hipp wrote:
Most varints are type varints and type varints are almost always a
single byte (the only exceptions being for large blobs or strings).
Varints are also used to store the total number of bytes in a row
(also usually one byte). Most varints are a single byte.
We,
D. Richard Hipp wrote:
Most varints are type varints and type varints are almost always a
single byte (the only exceptions being for large blobs or strings).
Varints are also used to store the total number of bytes in a row
(also usually one byte). Most varints are a single byte.
We,
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