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/*-------------------------------------------------------------------------
*
* Facilities for frontend code to query a databases.
*
* Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/fe_utils/query_utils.c
*
*-------------------------------------------------------------------------
*/
#include "postgres_fe.h"
#include "common/logging.h"
#include "fe_utils/cancel.h"
#include "fe_utils/query_utils.h"
/*
* Run a query, return the results, exit program on failure.
*/
PGresult *
executeQuery(PGconn *conn, const char *query, bool echo)
{
PGresult *res;
if (echo)
printf("%s\n", query);
res = PQexec(conn, query);
if (!res ||
PQresultStatus(res) != PGRES_TUPLES_OK)
{
pg_log_error("query failed: %s", PQerrorMessage(conn));
pg_log_info("query was: %s", query);
PQfinish(conn);
exit(1);
}
return res;
}
/*
* As above for a SQL command (which returns nothing).
*/
void
executeCommand(PGconn *conn, const char *query, bool echo)
{
PGresult *res;
if (echo)
printf("%s\n", query);
res = PQexec(conn, query);
if (!res ||
PQresultStatus(res) != PGRES_COMMAND_OK)
{
pg_log_error("query failed: %s", PQerrorMessage(conn));
pg_log_info("query was: %s", query);
PQfinish(conn);
exit(1);
}
PQclear(res);
}
/*
* As above for a SQL maintenance command (returns command success).
* Command is executed with a cancel handler set, so Ctrl-C can
* interrupt it.
*/
bool
executeMaintenanceCommand(PGconn *conn, const char *query, bool echo)
{
PGresult *res;
bool r;
if (echo)
printf("%s\n", query);
SetCancelConn(conn);
res = PQexec(conn, query);
ResetCancelConn();
r = (res && PQresultStatus(res) == PGRES_COMMAND_OK);
if (res)
PQclear(res);
return r;
}
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