8 Apr
2022
8 Apr
'22
6:01 p.m.
Hello,
I'm using sql_xquery from sqlops module to execute requests on a PostgreSQL database.
This work fine.
Now, for performance reasons, I would like to use prepared statements.
I'm wondering if this is possible using sql_xquery. I've looked at the code and
documentation, it seems it is not supported.
Can you confirm ?
If not possible with sql_xquery, is it possible with another existing function ?
In the code, I've searched for < PQprepare > / < PQexecPrepared >.
These can be found only in < modules/db_postgres/pg_cmd.c >, in function <
pg_cmd_exec > which is exported from < modules/db_postgres/pg_mod.c > (see
below).
I have no idea how to use these though... :/
Any ideas ?
/*
* Postgres module interface
*/
static cmd_export_t cmds[] = {
{"db_ctx", (cmd_function)NULL, 0, 0, 0, 0},
{"db_con", (cmd_function)pg_con, 0, 0, 0, 0},
{"db_uri", (cmd_function)pg_uri, 0, 0, 0, 0},
{"db_cmd", (cmd_function)pg_cmd, 0, 0, 0, 0},
{"db_put", (cmd_function)pg_cmd_exec, 0, 0, 0, 0},
{"db_del", (cmd_function)pg_cmd_exec, 0, 0, 0, 0},
{"db_get", (cmd_function)pg_cmd_exec, 0, 0, 0, 0},
{"db_upd", (cmd_function)pg_cmd_exec, 0, 0, 0, 0},
{"db_sql", (cmd_function)pg_cmd_exec, 0, 0, 0, 0},
{"db_res", (cmd_function)pg_res, 0, 0, 0, 0},
{"db_fld", (cmd_function)pg_fld, 0, 0, 0, 0},
{"db_first", (cmd_function)pg_cmd_first, 0, 0, 0, 0},
{"db_next", (cmd_function)pg_cmd_next, 0, 0, 0, 0},
{"db_setopt", (cmd_function)pg_setopt, 0, 0, 0, 0},
{"db_getopt", (cmd_function)pg_getopt, 0, 0, 0, 0},
{"db_bind_api", (cmd_function)db_postgres_bind_api, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0}
};
Regards,
Nicolas.
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