adds ordering check constraints by oid

Author: alaister

src/lib/PostgresMetaColumns.ts

@@ -343,6 +343,7 @@ BEGIN
     AND cardinality(conkey) = 1
     AND conrelid = ${literal(old!.table_id)}
     AND conkey[1] = ${literal(old!.ordinal_position)}
+    ORDER BY oid asc
     LIMIT 1;
 
   IF v_conname IS NOT NULL THEN

src/lib/sql/columns.sql

@@ -93,6 +93,7 @@ FROM
       ) AS "definition"
     FROM pg_constraint
     WHERE contype = 'c' AND cardinality(conkey) = 1
+    ORDER BY oid asc
   ) AS check_constraints ON check_constraints.table_id = c.oid AND check_constraints.ordinal_position = a.attnum
 WHERE
   NOT pg_is_other_temp_schema(nc.oid)