From: Magnus Hagander <magnus@hagander.net>
Date: Thu, 10 May 2012 07:11:38 +0000 (+0200)
Subject: Only attempt to show collations on servers >= 9.1.
X-Git-Tag: REL9_1_4~26
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=71ca53608de1763c0d82bf463580a30f634eba56;p=postgresql

Only attempt to show collations on servers >= 9.1.

Show a proper error message instead of a SQL error.

Josh Kupershmidt
---

diff --git a/src/bin/psql/describe.c b/src/bin/psql/describe.c
index b2c54b5f92..6df42fb957 100644
--- a/src/bin/psql/describe.c
+++ b/src/bin/psql/describe.c
@@ -2893,6 +2893,13 @@ listCollations(const char *pattern, bool verbose, bool showSystem)
 	printQueryOpt myopt = pset.popt;
 	static const bool translate_columns[] = {false, false, false, false, false};
 
+	if (pset.sversion < 90100)
+	{
+		fprintf(stderr, _("The server (version %d.%d) does not support collations.\n"),
+				pset.sversion / 10000, (pset.sversion / 100) % 100);
+		return true;
+	}
+
 	initPQExpBuffer(&buf);
 
 	printfPQExpBuffer(&buf,