diff --git a/backend/windmill-common/src/query_builders.rs b/backend/windmill-common/src/query_builders.rs
index c52707823e..6ce5c56d20 100644
--- a/backend/windmill-common/src/query_builders.rs
+++ b/backend/windmill-common/src/query_builders.rs
@@ -2369,7 +2369,7 @@ fn make_load_table_metadata_query(
     COLUMN_DEFAULT as DefaultValue,
     false as IsPrimaryKey,
     false as IsIdentity,
-    IS_NULLABLE as IsNullable,
+    CASE WHEN IS_NULLABLE = true THEN 'YES' ELSE 'NO' END as IsNullable,
     false as IsEnum,
     TABLE_NAME as table_name
 FROM information_schema.columns c