Re: [sqlite] Handling concurrent read request to SQLite
On Thu, Jul 26, 2012 at 11:37 AM, Simon Slavin wrote: > > Have you set a timeout ? If you haven't the SQLite functions never back > off and retry when they find the database locked, they just immediately > return an error. > Thanks a lot. I didn't know about this feature. I will give it a try. -- -n ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] Unknown module FTS4
Hello, I have a weird problem. I am working on a shared library, written using C and a GUI application written on C++. GUI application uses the shared library. This shared library uses SQLite amalgamation and links statically. GUI also uses SQLite for some configuration purpose. It is also statically linked. Both of them uses latest SQLite version. My shared library uses FTS4. I have enabled FTS4 by providing the compile time options while compiling the shared library. All works well with the shared library. All my tests in the shared library codebase is passing. Problem happens when I start using this in the GUI program. I am getting error like, "Unknown module FTS4". This is weird because I have it linked statically in my shared library and all this GUI program does is to dynamically link to my library. When I set the FTS compilation options to the GUI program, error goes away and all works well. I am not sure why this is happening. Any help would be great! -- -n ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] how to process password
I need insert any my bank-card information to sqlite db, so when I insert the
car number like '3312' and car password like '7711', but I wanna nobody can see
the password, so I create a function encode('7711','key') and decode(select
from stable where carnum=3312, 'key') to see the password, the key is like
'plkey777' to encode or decode the password , but I don't know how to realize
that. and I have a function to encode and decode : procode(aa,bb,flag);
char *aa="plkey777";
char *bb="7711";
procode(aa,bb,1); //here is to encoding the char ,bb result is bb
insert into stable select "3312",bb;
procode(aa,bb,2);//here is to decoding the char ,bb result is bb
select carbumber,procode(aa,bb,2) from stable
I don't know how to do this. the code upside isPseudo code。
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[sqlite] open database on Linux. Already db created on Mac.
Hi All, What is the procedure to open the sqlite3 database file in Linux Terminal which is already created on Mac. Thanks in advance. Regards, ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] EXT : Unknown module FTS4
You probably have another shared library in your path that is getting loaded first. Since you said shared library and not DLL I assume you're using Unix of some sort? Run "ldd" on your GUI app and see what library it says it will use. Also, you should have either strace or truss which can show you which library is getting loaded when it runs. strace myapp &>myapp.log Michael D. Black Senior Scientist Advanced Analytics Directorate Advanced GEOINT Solutions Operating Unit Northrop Grumman Information Systems From: sqlite-users-boun...@sqlite.org [sqlite-users-boun...@sqlite.org] on behalf of Navaneeth.K.N [navaneet...@gmail.com] Sent: Sunday, July 29, 2012 2:17 AM To: General Discussion of SQLite Database Subject: EXT :[sqlite] Unknown module FTS4 Hello, I have a weird problem. I am working on a shared library, written using C and a GUI application written on C++. GUI application uses the shared library. This shared library uses SQLite amalgamation and links statically. GUI also uses SQLite for some configuration purpose. It is also statically linked. Both of them uses latest SQLite version. My shared library uses FTS4. I have enabled FTS4 by providing the compile time options while compiling the shared library. All works well with the shared library. All my tests in the shared library codebase is passing. Problem happens when I start using this in the GUI program. I am getting error like, "Unknown module FTS4". This is weird because I have it linked statically in my shared library and all this GUI program does is to dynamically link to my library. When I set the FTS compilation options to the GUI program, error goes away and all works well. I am not sure why this is happening. Any help would be great! -- -n ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] EXT : open database on Linux. Already db created on Mac.
You familiar with the sqlite3 shell? sqlite-shell here: http://www.sqlite.org/sqlite-shell-linux-x86-3071300.zip sqlite3 filename Michael D. Black Senior Scientist Advanced Analytics Directorate Advanced GEOINT Solutions Operating Unit Northrop Grumman Information Systems From: sqlite-users-boun...@sqlite.org [sqlite-users-boun...@sqlite.org] on behalf of Durga D [durga.d...@gmail.com] Sent: Sunday, July 29, 2012 7:14 AM To: General Discussion of SQLite Database Subject: EXT :[sqlite] open database on Linux. Already db created on Mac. Hi All, What is the procedure to open the sqlite3 database file in Linux Terminal which is already created on Mac. Thanks in advance. Regards, ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] how to process password
Encryption is very hard to do right, so in general, let someone else do it.
We use SEE (http://www.hwaci.com/sw/sqlite/see.html) with the key
generated from a password by PBKDF2 and a high number of iterations.
Previously, columns were encrypted with OS functions that made it
impossible to move the database from machine to machine, as well as
really bloating up the data in those columns.
Don't forget to pull the password from secure functions, don't take it
from the command line or getline.
On 7/27/2012 9:50 AM, yanhong.ye wrote:
> I need insert any my bank-card information to sqlite db, so when I insert the
> car number like '3312' and car password like '7711', but I wanna nobody can
> see the password, so I create a function encode('7711','key') and
> decode(select from stable where carnum=3312, 'key') to see the password, the
> key is like 'plkey777' to encode or decode the password , but I don't know
> how to realize that. and I have a function to encode and decode :
> procode(aa,bb,flag);
> char *aa="plkey777";
> char *bb="7711";
> procode(aa,bb,1); //here is to encoding the char ,bb result is bb
>
> insert into stable select "3312",bb;
>
>
> procode(aa,bb,2);//here is to decoding the char ,bb result is bb
> select carbumber,procode(aa,bb,2) from stable
>
> I don't know how to do this. the code upside isPseudo code。
> ___
>
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[sqlite] UNION ALL with queries that have a different number of columns
I've run into a case where a sqlite query I'm expecting to return an error is actually succeeding and I was wondering if anyone could point out why this query is valid. CREATE TABLE test_table( k INTEGER, v INTEGER ); INSERT INTO test_table( k, v ) VALUES( 4, 5 ); SELECT * FROM( SELECT * FROM( SELECT k FROM test_table ) UNION ALL SELECT * FROM( SELECT k, v FROM test_table ) ) Here is a demo of the above: http://sqlfiddle.com/#!7/0a28f/8 I would think that unioning two selects which have a different number of columns would return an error. If I remove the outermost SELECT * then I receive the error I'm expecting: SELECTs to the left and right of UNION ALL do not have the same number of result columns. Thanks - Clay ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] UNION ALL with queries that have a different number ofcolumns
Clay Trychta wrote: > SELECT * FROM( > SELECT * FROM( >SELECT k FROM test_table > ) > UNION ALL > SELECT * FROM( >SELECT k, v FROM test_table > ) > ) > > I would think that unioning two selects which have a different number > of columns would return an error. If I remove the outermost SELECT * > then I receive the error I'm expecting: SELECTs to the left and right > of UNION ALL do not have the same number of result columns. Looks like a bug to me, for what it's worth. -- Igor Tandetnik ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
