Remove unnecessary "DISTINCT" in psql's queries for \dAc and \dAf.

A moment's examination of these queries is sufficient to see that
they do not produce duplicate rows, unless perhaps there's
catalog corruption.  Using DISTINCT anyway is inefficient and
confusing; moreover it sets a poor example for anyone who
refers to psql -E output to see how to query the catalogs.

diff --git a/src/bin/psql/describe.c b/src/bin/psql/describe.c
index 57266f4fc3515397b5c6f83a2d762cf4962520ff..d81f1575bf4c7741a1eb50f3dfd8cf547aed00f6 100644 (file)
--- a/src/bin/psql/describe.c
+++ b/src/bin/psql/describe.c
@@ -6071,7 +6071,7 @@ listOperatorClasses(const char *access_method_pattern,
    initPQExpBuffer(&buf);
 
    printfPQExpBuffer(&buf,
-                     "SELECT DISTINCT"
+                     "SELECT\n"
                      "  am.amname AS \"%s\",\n"
                      "  pg_catalog.format_type(c.opcintype, NULL) AS \"%s\",\n"
                      "  CASE\n"
@@ -6166,7 +6166,7 @@ listOperatorFamilies(const char *access_method_pattern,
    initPQExpBuffer(&buf);
 
    printfPQExpBuffer(&buf,
-                     "SELECT DISTINCT"
+                     "SELECT\n"
                      "  am.amname AS \"%s\",\n"
                      "  CASE\n"
                      "    WHEN pg_catalog.pg_opfamily_is_visible(f.oid)\n"