Hello colleagues; I am new to sqlite, and I have recently started to use it from the command line (sqlite3.exe) and in C programs.
In my C example program I open de database at the beginning and close it beforte the end of the program. Examples like: memset(orden_SQL, 0, 200*sizeof(char)); sprintf(orden_SQL,"select nBlancos from CORRECCION_EXAMEN where modelo='%c';",modelo); sqlite3_get_table(db,orden_SQL,&Resultado,&Rows,&Cols,&errorMsg); for(i=1;i<=Rows;i++) { examen.blancos[i-1]=atoi(Resultado[i]); } work perfectly well, but I am having a very annoying problem with sqlite3_exec() function. The code just after the example above is: memset(orden_SQL,0,200*sizeof(char)); sprintf(orden_SQL,"update ALUMNO set nota=%0.1f where dni='%s';",nota,dni); res=sqlite3_exec(db,orden_SQL,0,0,&errorMsg); sqlite3_free(errorMsg); and it does not work. "res" value is 0 and "errorMsg" is Error:"Expression cannot be evaluated". I have also tried to substitute sqlite3_exec with sqlite3_prepare() + sqlite3_step() with the same result. The command "update ALUMNO set nota=9 where dni='12345678P';" works perfect in the comand line. What problem I am having here? It is very important for me for the project I am developping, so I would appreciate a lot any kind of advise. Best regards, Alberto _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users