From 00a4196139ab15110c5e46e1002fe7ad523250d8 Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Sat, 17 Apr 1999 17:18:41 +0000
Subject: Add res checking to libpq examples, from Dan Merillat.

---
 doc/src/sgml/libpq.sgml | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

(limited to 'doc/src')

diff --git a/doc/src/sgml/libpq.sgml b/doc/src/sgml/libpq.sgml
index 19c73502094..cbde3387fc3 100644
--- a/doc/src/sgml/libpq.sgml
+++ b/doc/src/sgml/libpq.sgml
@@ -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);
-- 
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