From 14935f62b57d08e06807e20634d3a4640bd09c66 Mon Sep 17 00:00:00 2001
From: reshke <reshke@double.cloud>
Date: Mon, 11 Aug 2025 13:14:14 +0000
Subject: [PATCH] Add tab completion for ALTER TABLE xxx ALTER CONTRAINT ...
 ENFORCED/INHERIT

---
 src/bin/psql/tab-complete.in.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/bin/psql/tab-complete.in.c b/src/bin/psql/tab-complete.in.c
index 6176741d20b1..e0ec3dffe8f4 100644
--- a/src/bin/psql/tab-complete.in.c
+++ b/src/bin/psql/tab-complete.in.c
@@ -2893,6 +2893,16 @@ match_previous_words(int pattern_id,
 		set_completion_reference(prev3_wd);
 		COMPLETE_WITH_SCHEMA_QUERY(Query_for_constraint_of_table);
 	}
+	/* if we have ALTER TABLE <sth> ALTER|DROP|RENAME CONSTRAINT <constraint>, provide [NOT] ENFORCED or [NO] INHERIT  */
+	else if (Matches("ALTER", "TABLE", MatchAny, "ALTER|DROP|RENAME", "CONSTRAINT", MatchAny))
+	{
+		COMPLETE_WITH("ENFORCED", "NOT ENFORCED", "NO INHERIT", "INHERIT");
+	}
+	/* if we have ALTER TABLE <sth> ALTER|DROP|RENAME CONSTRAINT <constraint> NO, provide INHERIT  */
+	else if (Matches("ALTER", "TABLE", MatchAny, "ALTER|DROP|RENAME", "CONSTRAINT", MatchAny, "NO"))
+	{
+		COMPLETE_WITH("INHERIT");
+	}
 	/* ALTER TABLE <sth> VALIDATE CONSTRAINT <non-validated constraint> */
 	else if (Matches("ALTER", "TABLE", MatchAny, "VALIDATE", "CONSTRAINT"))
 	{