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Commit07d5205

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Throw nice error if server is too old to support psql's \ef or \sf command.
Previously, you'd get "function pg_catalog.pg_get_functiondef(integer) doesnot exist", which is at best rather unprofessional-looking. Back-patchto 8.4 where \ef was introduced.Josh Kupershmidt
1 parent91e8cb6 commit07d5205

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1 file changed

+14
-2
lines changed

1 file changed

+14
-2
lines changed

‎src/bin/psql/command.c‎

Lines changed: 14 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -583,7 +583,13 @@ exec_command(const char *cmd,
583583
{
584584
intlineno=-1;
585585

586-
if (!query_buf)
586+
if (pset.sversion<80400)
587+
{
588+
psql_error("The server (version %d.%d) does not support editing function source.\n",
589+
pset.sversion /10000, (pset.sversion /100) %100);
590+
status=PSQL_CMD_ERROR;
591+
}
592+
elseif (!query_buf)
587593
{
588594
psql_error("no query buffer\n");
589595
status=PSQL_CMD_ERROR;
@@ -1110,7 +1116,13 @@ exec_command(const char *cmd,
11101116
func_buf=createPQExpBuffer();
11111117
func=psql_scan_slash_option(scan_state,
11121118
OT_WHOLE_LINE,NULL, true);
1113-
if (!func)
1119+
if (pset.sversion<80400)
1120+
{
1121+
psql_error("The server (version %d.%d) does not support showing function source.\n",
1122+
pset.sversion /10000, (pset.sversion /100) %100);
1123+
status=PSQL_CMD_ERROR;
1124+
}
1125+
elseif (!func)
11141126
{
11151127
psql_error("function name is required\n");
11161128
status=PSQL_CMD_ERROR;

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