Only DISCARD ALL should be in the command_no_begin list.

We allowes DISCARD PLANS and TEMP in a transaction.

diff --git a/src/bin/psql/common.c b/src/bin/psql/common.c
index c8fc085fa04b49ce5cfac45963b01e3404ff1459..81a633a3d01f21ab3777985d3defb7fe6c0aca9e 100644 (file)
--- a/src/bin/psql/common.c
+++ b/src/bin/psql/common.c
@@ -1369,8 +1369,20 @@ command_no_begin(const char *query)
            return true;
    }
 
+   /* DISCARD ALL isn't allowed in xacts, but other variants are allowed. */
    if (wordlen == 7 && pg_strncasecmp(query, "discard", 7) == 0)
-       return true;
+   {
+       query += wordlen;
+
+       query = skip_white_space(query);
+
+       wordlen = 0;
+       while (isalpha((unsigned char) query[wordlen]))
+           wordlen += PQmblen(&query[wordlen], pset.encoding);
+
+       if (wordlen == 3 && pg_strncasecmp(query, "all", 3) == 0)
+           return true;
+   }
 
    return false;
 }