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Add res checking to libpq examples, from Dan Merillat.

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This commit is contained in:
Bruce Momjian
1999-04-17 17:18:41 +00:00
parent 1b9f24c878
commit 00a4196139
2 changed files with 15 additions and 15 deletions
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14
doc/src/sgml/libpq.sgml
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@ -1600,7 +1600,7 @@ main()
/* start a transaction block */
res = PQexec(conn, "BEGIN");
if (PQresultStatus(res) != PGRES_COMMAND_OK)
if (!res || PQresultStatus(res) != PGRES_COMMAND_OK)
{
fprintf(stderr, "BEGIN command failed\n");
PQclear(res);
@ -1618,7 +1618,7 @@ main()
* databases
*/
res = PQexec(conn, "DECLARE mycursor CURSOR FOR select * from pg_database");
if (PQresultStatus(res) != PGRES_COMMAND_OK)
if (!res || PQresultStatus(res) != PGRES_COMMAND_OK)
{
fprintf(stderr, "DECLARE CURSOR command failed\n");
PQclear(res);
@ -1626,7 +1626,7 @@ main()
}
PQclear(res);
res = PQexec(conn, "FETCH ALL in mycursor");
if (PQresultStatus(res) != PGRES_TUPLES_OK)
if (!res || PQresultStatus(res) != PGRES_TUPLES_OK)
{
fprintf(stderr, "FETCH ALL command didn't return tuples properly\n");
PQclear(res);
@ -1742,7 +1742,7 @@ main()
}
res = PQexec(conn, "LISTEN TBL2");
if (PQresultStatus(res) != PGRES_COMMAND_OK)
if (!res || PQresultStatus(res) != PGRES_COMMAND_OK)
{
fprintf(stderr, "LISTEN command failed\n");
PQclear(res);
@ -1871,7 +1871,7 @@ main()
/* start a transaction block */
res = PQexec(conn, "BEGIN");
if (PQresultStatus(res) != PGRES_COMMAND_OK)
if (!res || PQresultStatus(res) != PGRES_COMMAND_OK)
{
fprintf(stderr, "BEGIN command failed\n");
PQclear(res);
@ -1889,7 +1889,7 @@ main()
* databases
*/
res = PQexec(conn, "DECLARE mycursor BINARY CURSOR FOR select * from test1");
if (PQresultStatus(res) != PGRES_COMMAND_OK)
if (!res || PQresultStatus(res) != PGRES_COMMAND_OK)
{
fprintf(stderr, "DECLARE CURSOR command failed\n");
PQclear(res);
@ -1898,7 +1898,7 @@ main()
PQclear(res);
res = PQexec(conn, "FETCH ALL in mycursor");
if (PQresultStatus(res) != PGRES_TUPLES_OK)
if (!res || PQresultStatus(res) != PGRES_TUPLES_OK)
{
fprintf(stderr, "FETCH ALL command didn't return tuples properly\n");
PQclear(res);