Adjust psql to use pg_get_triggerdef(pretty=true) to remove extra ()'s

from description of triggers with WHEN clause.

Thanks to Brad T. Sliger for the review.

src/backend/utils/adt/ruleutils.c

@@ -9,7 +9,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/adt/ruleutils.c,v 1.319 2010/01/17 22:56:22 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/adt/ruleutils.c,v 1.320 2010/01/21 06:11:45 itagaki Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -518,10 +518,9 @@ pg_get_triggerdef_worker(Oid trigid, bool pretty)
 	initStringInfo(&buf);
 
 	tgname = NameStr(trigrec->tgname);
-	appendStringInfo(&buf, "CREATE %sTRIGGER %s",
+	appendStringInfo(&buf, "CREATE %sTRIGGER %s ",
 					 OidIsValid(trigrec->tgconstraint) ? "CONSTRAINT " : "",
 					 quote_identifier(tgname));
-	appendStringInfoString(&buf, pretty ? "\n    " : " ");
 
 	if (TRIGGER_FOR_BEFORE(trigrec->tgtype))
 		appendStringInfo(&buf, "BEFORE");
@@ -573,33 +572,27 @@ pg_get_triggerdef_worker(Oid trigid, bool pretty)
 			appendStringInfo(&buf, " TRUNCATE");
 		findx++;
 	}
-	appendStringInfo(&buf, " ON %s",
+	appendStringInfo(&buf, " ON %s ",
 					 generate_relation_name(trigrec->tgrelid, NIL));
-	appendStringInfoString(&buf, pretty ? "\n    " : " ");
 
 	if (OidIsValid(trigrec->tgconstraint))
 	{
 		if (OidIsValid(trigrec->tgconstrrelid))
-		{
-			appendStringInfo(&buf, "FROM %s",
+			appendStringInfo(&buf, "FROM %s ",
 							 generate_relation_name(trigrec->tgconstrrelid, NIL));
-			appendStringInfoString(&buf, pretty ? "\n    " : " ");
-		}
 		if (!trigrec->tgdeferrable)
 			appendStringInfo(&buf, "NOT ");
 		appendStringInfo(&buf, "DEFERRABLE INITIALLY ");
 		if (trigrec->tginitdeferred)
-			appendStringInfo(&buf, "DEFERRED");
+			appendStringInfo(&buf, "DEFERRED ");
 		else
-			appendStringInfo(&buf, "IMMEDIATE");
-		appendStringInfoString(&buf, pretty ? "\n    " : " ");
+			appendStringInfo(&buf, "IMMEDIATE ");
 	}
 
 	if (TRIGGER_FOR_ROW(trigrec->tgtype))
-		appendStringInfo(&buf, "FOR EACH ROW");
+		appendStringInfo(&buf, "FOR EACH ROW ");
 	else
-		appendStringInfo(&buf, "FOR EACH STATEMENT");
-	appendStringInfoString(&buf, pretty ? "\n    " : " ");
+		appendStringInfo(&buf, "FOR EACH STATEMENT ");
 
 	/* If the trigger has a WHEN qualification, add that */
 	value = fastgetattr(ht_trig, Anum_pg_trigger_tgqual,
@@ -643,12 +636,12 @@ pg_get_triggerdef_worker(Oid trigid, bool pretty)
 		context.windowClause = NIL;
 		context.windowTList = NIL;
 		context.varprefix = true;
-		context.prettyFlags = pretty ? PRETTYFLAG_PAREN | PRETTYFLAG_INDENT : 0;
+		context.prettyFlags = pretty ? PRETTYFLAG_PAREN : 0;
 		context.indentLevel = PRETTYINDENT_STD;
 
 		get_rule_expr(qual, &context, false);
 
-		appendStringInfo(&buf, ")%s", pretty ? "\n    " : " ");
+		appendStringInfo(&buf, ") ");
 	}
 
 	appendStringInfo(&buf, "EXECUTE PROCEDURE %s(",

src/bin/psql/describe.c

@@ -8,7 +8,7 @@
  *
  * Copyright (c) 2000-2010, PostgreSQL Global Development Group
  *
- * $PostgreSQL: pgsql/src/bin/psql/describe.c,v 1.234 2010/01/17 22:56:23 tgl Exp $
+ * $PostgreSQL: pgsql/src/bin/psql/describe.c,v 1.235 2010/01/21 06:11:46 itagaki Exp $
  */
 #include "postgres_fe.h"
 
@@ -1854,10 +1854,11 @@ describeOneTableDetails(const char *schemaname,
 		{
 			printfPQExpBuffer(&buf,
 							  "SELECT t.tgname, "
-							  "pg_catalog.pg_get_triggerdef(t.oid), "
+							  "pg_catalog.pg_get_triggerdef(t.oid%s), "
 							  "t.tgenabled\n"
 							  "FROM pg_catalog.pg_trigger t\n"
 							  "WHERE t.tgrelid = '%s' AND ",
+							  (pset.sversion >= 80500 ? ", true" : ""),
 							  oid);
 			if (pset.sversion >= 80500)
 				appendPQExpBuffer(&buf, "NOT t.tgisinternal");

src/test/regress/expected/triggers.out

@@ -376,12 +376,8 @@ SELECT * FROM main_table ORDER BY a, b;
 
 SELECT pg_get_triggerdef(oid, true) FROM pg_trigger WHERE tgrelid = 'main_table'::regclass AND tgname = 'modified_a';
                                                              pg_get_triggerdef                                                              
---------------------------------------------------
- CREATE TRIGGER modified_a                       +
-     BEFORE UPDATE OF a ON main_table            +
-     FOR EACH ROW                                +
-     WHEN (old.a <> new.a)                       +
-     EXECUTE PROCEDURE trigger_func('modified_a')
+--------------------------------------------------------------------------------------------------------------------------------------------
+ CREATE TRIGGER modified_a BEFORE UPDATE OF a ON main_table FOR EACH ROW WHEN (old.a <> new.a) EXECUTE PROCEDURE trigger_func('modified_a')
 (1 row)
 
 SELECT pg_get_triggerdef(oid, false) FROM pg_trigger WHERE tgrelid = 'main_table'::regclass AND tgname = 'modified_a';
@@ -392,12 +388,8 @@ SELECT pg_get_triggerdef(oid, false) FROM pg_trigger WHERE tgrelid = 'main_table
 
 SELECT pg_get_triggerdef(oid, true) FROM pg_trigger WHERE tgrelid = 'main_table'::regclass AND tgname = 'modified_any';
                                                                       pg_get_triggerdef                                                                       
-----------------------------------------------------
- CREATE TRIGGER modified_any                       +
-     BEFORE UPDATE OF a ON main_table              +
-     FOR EACH ROW                                  +
-     WHEN (old.* IS DISTINCT FROM new.*)           +
-     EXECUTE PROCEDURE trigger_func('modified_any')
+--------------------------------------------------------------------------------------------------------------------------------------------------------------
+ CREATE TRIGGER modified_any BEFORE UPDATE OF a ON main_table FOR EACH ROW WHEN (old.* IS DISTINCT FROM new.*) EXECUTE PROCEDURE trigger_func('modified_any')
 (1 row)
 
 DROP TRIGGER modified_a ON main_table;
@@ -424,15 +416,6 @@ SELECT pg_get_triggerdef(oid) FROM pg_trigger WHERE tgrelid = 'main_table'::regc
  CREATE TRIGGER after_upd_a_b_row_trig AFTER UPDATE OF a, b ON main_table FOR EACH ROW EXECUTE PROCEDURE trigger_func('after_upd_a_b_row')
 (1 row)
 
-SELECT pg_get_triggerdef(oid, true) FROM pg_trigger WHERE tgrelid = 'main_table'::regclass AND tgname = 'after_upd_a_b_row_trig';
-                    pg_get_triggerdef                    
----------------------------------------------------------
- CREATE TRIGGER after_upd_a_b_row_trig                  +
-     AFTER UPDATE OF a, b ON main_table                 +
-     FOR EACH ROW                                       +
-     EXECUTE PROCEDURE trigger_func('after_upd_a_b_row')
-(1 row)
-
 UPDATE main_table SET a = 50;
 NOTICE:  trigger_func(before_upd_a_stmt) called: action = UPDATE, when = BEFORE, level = STATEMENT
 NOTICE:  trigger_func(before_upd_a_row) called: action = UPDATE, when = BEFORE, level = ROW

src/test/regress/sql/triggers.sql

@@ -304,7 +304,6 @@ CREATE TRIGGER after_upd_b_stmt_trig AFTER UPDATE OF b ON main_table
 FOR EACH STATEMENT EXECUTE PROCEDURE trigger_func('after_upd_b_stmt');
 
 SELECT pg_get_triggerdef(oid) FROM pg_trigger WHERE tgrelid = 'main_table'::regclass AND tgname = 'after_upd_a_b_row_trig';
-SELECT pg_get_triggerdef(oid, true) FROM pg_trigger WHERE tgrelid = 'main_table'::regclass AND tgname = 'after_upd_a_b_row_trig';
 
 UPDATE main_table SET a = 50;
 UPDATE main_table SET b = 10;