Implement 'Const <@ Var' case in jsonb_sel()

Nikita Glukhov · Nikita Glukhov · commit a9c6bc89d705 · 2022-01-23T01:00:51.000+03:00
diff --git a/src/backend/utils/adt/jsonb_selfuncs.c b/src/backend/utils/adt/jsonb_selfuncs.c
@@ -1389,7 +1389,11 @@ jsonb_sel(PG_FUNCTION_ARGS)
 		}
 
 		case JsonbContainedOperator:
-			/* TODO */
+			if (varonleft || cnst->consttype != JSONBOID)
+				goto out;
+
+			sel = jsonSelectivityContains(&stats,
+										  DatumGetJsonbP(cnst->constvalue));
 			break;
 
 		case JsonbContainsOperator:
