Re: [HACKERS] How to allocate a global variable (to implement virutal databases)
Thanks, but from the vail site "windows sorry"... I am working in windows. I was thinking in a simply implementation, with only global variables used with the rule system. I can write the c code for this.Tom Lane <[EMAIL PROTECTED]> wrote: Juan Manuel Diaz Lara <[EMAIL PROTECTED]>writes:> I would like to implement a row-level security for> application-level-user (the user is not a postgresql user),Have you looked at Veil?http://veil.projects.postgresql.org/regards, tom laneAtte.Juan Manuel Díaz Lara Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates.
[HACKERS] How to allocate a global variable (to implement virutal databases)
I would like to implement a row-level security for application-level-user (the user is not a postgresql user), I wish to restrict access to rows in diferent tables based on this application-level-user. My idea is to use rules to rewrite queries based on the contents of a global variable that is set with the application-level-userid, to this end I like to set the variabale at connection-time only, and aplied to all queris by the rewrite rules. I think I can write a c-function but I do not know the correct way to allocate memory with session duration, maybe simply with alloc (o should I use palloc?). Or is there a solution I do not know about? Thanks.Atte.Juan Manuel Díaz Lara Blab-away for as little as 1¢/min. Make PC-to-Phone Calls using Yahoo! Messenger with Voice.
[HACKERS] Problem compiling from cvs, mingw
I get the following error: gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Winline -fno-strict-aliasing -I. -I../../../src/include -I./src/include/port/win32 -DEXEC_BACKEND "-I../../../src/include/port/win32" -DBUILDING_DLL -c -o bootparse.o bootparse.cbootparse.y:101:10: "b4_file_name" is not a valid filenamemake[3]: *** [bootparse.o] Error 1make[3]: Leaving directory `/pgsql/src/backend/bootstrap'make[2]: *** [bootstrap-recursive] Error 2make[2]: Leaving directory `/pgsql/src/backend'make[1]: *** [all] Error 2make[1]: Leaving directory `/pgsql/src'make: *** [all] Error 2 I have installed flex 2.5.4 y bison 2.1. The configure scripts pass correctly the tests for flex and bison. The problem seems to como from src/backend/bootstrap/bootparse.c with I suposse works with bison, but I do not know how. Thanks for any help. Atte.Juan Manuel Díaz Lara How low will we go? Check out Yahoo! Messengers low PC-to-Phone call rates.
[HACKERS] How to implement oracle like rownum(function or seudocolumn) ?
I need a rownum column, like Oracle. I have searched the mailing lists and I don't see a satisfactory solution, so I was wondering write a UDF to implement it, the requirements are: 1. Need to preserve state between calls to the function (the rowcount). Maybe using a MemoryContext with a lifespan equal to the executing query. 2. It should be called every time a new row is produced. 3. And more important, need to be called in the right place when called from subquerys: Imagine one to man relationship between table A and tabla B. Then next query SELECT s.id, s.rownum FROM (SELECT a.id, rownum() AS rownum FROM a) s, b WHERE a.id = b.id In this case, the rownum function should behave as if it was an aggregated function, where the subquery is evaluated first and the results joined with table b. I think that a UDF could be evaluated last by the planner (when producing the final resultset) so it won't give the intended result. I looking for a general solution, Any ideas? . Thanks. Atte.Juan Manuel Díaz Lara New Yahoo! Messenger with Voice. Call regular phones from your PC and save big.
[HACKERS] Rigth toolset to compile under mingw?
I have tried to compile 8.1.3 with mingw but I am receiving come errors, I do not know with versions are the correct one. Could some body tell me the right versions ? and url's to download from ? please. I searched the mainling lists but it is not clear. Thanks.Atte.Juan Manuel Díaz Lara New Yahoo! Messenger with Voice. Call regular phones from your PC and save big.
[HACKERS] Problem compiling with mingw
I run configure (no complains about bison o flex), after a few seconds I receive the next errors: make[4]: Leaving directory `/pgsql/src/backend/access/nbtree'make -C transam SUBSYS.omake[4]: Entering directory `/pgsql/src/backend/access/transam'make[4]: `SUBSYS.o' is up to date.make[4]: Leaving directory `/pgsql/src/backend/access/transam'make[3]: Leaving directory `/pgsql/src/backend/access'make -C bootstrap allmake[3]: Entering directory `/pgsql/src/backend/bootstrap'gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Winline -fno-strict-aliasing -I. -I../../../src/include -I./src/include/port/win32 -DEXEC_BACKEND "-I../../../src/include/port/win32" -DBUILDING_DLL -c -o bootparse.o bootparse.cbootparse.y:101:10: "b4_file_name" is not a valid filenamemake[3]: *** [bootparse.o] Error 1make[3]: Leaving directory `/pgsql/src/backend/bootstrap'make[2]: *** [bootstrap-recursive] Error 2make[2]: Leaving directory `/pgsql/src/backend'make[1]: *** [all] Error 2make[1]: Leaving directory `/pgsql/src'make: *** [all] Error 2 My enviroment, installed in that order: MSYS-1.0.8.exe --> d:\msys inGW-3.1.0-1.exe --> d:\msys\mingw msysDTK-1.0.1.exe -> d:\msys bison-2.1.exe --> d:\gnuwin32 flex-2.5.4a-1.exe --> d:\gnuwin32 fstab -- #Win32_Path Mount_Point#c:/mingw /mingw#c:/ActiveState/perl /perld:/gnuwin32 /gnuwin32 profile --- ... if [ $MSYSTEM == MINGW32 ]; then export PATH=".:/usr/local/bin:/mingw/bin:/bin:/gnuwin32/bin:$PATH"else export PATH=".:/usr/local/bin:/bin:/mingw/bin:/gnuwin32/bin:$PATH"fi ... S.O. : Windows 2003 server Can any body help ? Thanks in advance. Atte.Juan Manuel Díaz Lara New Yahoo! Messenger with Voice. Call regular phones from your PC for low, low rates.
