Re: [sqlite] Will a read-only transaction cause writes to the WAL?

2010-09-16 Thread Martin C.
Hi, thanks for the clarification. I may need to add a custom implementation of the VFS or a patch for the -shm files to be held on memory-disk then. Regarding the question, why I want to wrap reads in a transaction is, because I don't know if there'll be a write as part of the transaction in befo

Re: [sqlite] [PATCH] Fix locale-unsafe usage of tolower (upstreaming Chromium change)

2010-09-16 Thread Paweł Hajdan , Jr .
If you have some time for that, I'd appreciate patching at least fts2. This will make it possible for Chromium to drop another custom patch for SQLite. On Wed, Aug 18, 2010 at 13:49, Richard Hipp wrote: > I'm thinking that you shouldn't be using FTS1 and FTS2 in the first place. > They are untes

Re: [sqlite] Will a read-only transaction cause writes to the WAL?

2010-09-16 Thread Richard Hipp
Reads to not write to the WAL. But they might write to the shared-memory. On Thu, Sep 16, 2010 at 1:16 PM, Martin C. wrote: > Hi, > > I am using SQLite on a NAND based embedded system, and to ensure the > lifetime of the NAND I need to optimize writes to the NAND. > > Can you tell me, if a read

Re: [sqlite] Will a read-only transaction cause writes to the WAL?

2010-09-16 Thread Virgilio Alexandre Fornazin
Just curious why you wrap your SELECT statement into a 'TRANSACTION' ... -Original Message- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Martin C. Sent: quinta-feira, 16 de setembro de 2010 14:16 To: sqlite-users@sqlite.org Subject: [sqlite]

[sqlite] Will a read-only transaction cause writes to the WAL?

2010-09-16 Thread Martin C.
Hi, I am using SQLite on a NAND based embedded system, and to ensure the lifetime of the NAND I need to optimize writes to the NAND. Can you tell me, if a read-only transaction, by which I mean BEGIN TRANSACTION SELECT * from SomeTable; COMMIT will cause any writes to the WAL? What abou

Re: [sqlite] Automatic index detail

2010-09-16 Thread Jay A. Kreibich
On Wed, Sep 15, 2010 at 06:00:40PM -0700, Cory Nelson scratched on the wall: > SQLite doesn't support automatic indexing, It does as of 3.7. -j -- Jay A. Kreibich < J A Y @ K R E I B I.C H > "Intelligence is like underwear: it is important that you have it, but showing it to the wron

Re: [sqlite] memory wasted shm mapped file (3.7.2)

2010-09-16 Thread Michele Pradella
ok, I think I'll use the snapshot in the mean time. Thank you Il 16/09/2010 15.43, Richard Hipp ha scritto: > On Thu, Sep 16, 2010 at 9:02 AM, Michele Pradella< > michele.prade...@selea.com> wrote: > >> After some days of test the application work fine and with VMMap I see >> small value of m

Re: [sqlite] memory wasted shm mapped file (3.7.2)

2010-09-16 Thread Richard Hipp
On Thu, Sep 16, 2010 at 9:02 AM, Michele Pradella < michele.prade...@selea.com> wrote: > After some days of test the application work fine and with VMMap I see > small value of mapped file and I see only 1 instance of -shm allocated, > some times 2 but it's all ok. So I'll wait for the next amalg

Re: [sqlite] memory wasted shm mapped file (3.7.2)

2010-09-16 Thread Michele Pradella
After some days of test the application work fine and with VMMap I see small value of mapped file and I see only 1 instance of -shm allocated, some times 2 but it's all ok. So I'll wait for the next amalgamation release to have an official sources for that fix. When do you think will be releas

Re: [sqlite] cast from pointer to integer of different size

2010-09-16 Thread Ian Hardingham
You know, compilers are like women - they warn you about a lot of things you really don't need to worry about. On 16/09/2010 12:18, Dan Kennedy wrote: > On Sep 16, 2010, at 2:09 AM, jagjeet singh nain wrote: > >> Hi, >> I was compiling sqlite on 64 bit OS and i got following warning >> message.

Re: [sqlite] cast from pointer to integer of different size

2010-09-16 Thread Dan Kennedy
On Sep 16, 2010, at 2:09 AM, jagjeet singh nain wrote: > Hi, > I was compiling sqlite on 64 bit OS and i got following warning > message. > > sqlite3.c: In function 'rtreeInit': > sqlite3.c:118698:20: warning: cast from pointer to integer of > different size > Two versions were tried, 3.6.23.

Re: [sqlite] cast from pointer to integer of different size

2010-09-16 Thread Michael Schlenker
jagjeet singh nain schrieb: > Hi, > I was compiling sqlite on 64 bit OS and i got following warning message. Its probably an issue of: http://www.sqlite.org/faq.html#q17 Michael -- Michael Schlenker Software Architect CONTACT Software GmbH Tel.: +49 (421) 20153-80 Wiener Straße 1-3

[sqlite] cast from pointer to integer of different size

2010-09-16 Thread jagjeet singh nain
Hi, I was compiling sqlite on 64 bit OS and i got following warning message. sqlite3.c: In function 'rtreeInit': sqlite3.c:118698:20: warning: cast from pointer to integer of different size Two versions were tried, 3.6.23.1 and 3.7.2 but both had same warning message. Default configuration script