Correct order for YB. DDL then DML

Author: LexLuthr

harmony/harmonydb/sql/20260521-pdp-v0-pull-refactor.sql

@@ -13,11 +13,6 @@ ALTER TABLE pdp_piece_pull_items
 ALTER TABLE pdp_piece_pull_items
     ADD COLUMN IF NOT EXISTS created_at TIMESTAMPTZ NOT NULL DEFAULT NOW();
 
-UPDATE pdp_piece_pull_items fi
-SET created_at = COALESCE(pp.created_at, fi.created_at)
-FROM pdp_piece_pulls pp
-WHERE pp.id = fi.fetch_id;
-
 ALTER TABLE pdp_piece_pull_items
     ADD COLUMN IF NOT EXISTS parked_piece_ref BIGINT REFERENCES parked_piece_refs(ref_id) ON DELETE SET NULL;
 
@@ -30,18 +25,23 @@ ALTER TABLE pdp_piece_pull_items
 ALTER TABLE pdp_piece_pull_items
     ADD CONSTRAINT pdp_piece_pull_items_pkey PRIMARY KEY (fetch_id, piece_cid, source_url);
 
-UPDATE pdp_piece_pull_items fi
-SET task_id = NULL
-WHERE fi.task_id IS NOT NULL
-    AND NOT EXISTS (
-        SELECT 1
-        FROM harmony_task ht
-        WHERE ht.id = fi.task_id
-    );
-
 ALTER TABLE pdp_piece_pull_items
     DROP CONSTRAINT IF EXISTS pdp_piece_pull_items_terminal_state_check;
 
 ALTER TABLE pdp_piece_pull_items
     ADD CONSTRAINT pdp_piece_pull_items_terminal_state_check
     CHECK (NOT (complete AND failed));
+
+UPDATE pdp_piece_pull_items fi
+SET created_at = COALESCE(pp.created_at, fi.created_at)
+    FROM pdp_piece_pulls pp
+WHERE pp.id = fi.fetch_id;
+
+UPDATE pdp_piece_pull_items fi
+SET task_id = NULL
+WHERE fi.task_id IS NOT NULL
+  AND NOT EXISTS (
+    SELECT 1
+    FROM harmony_task ht
+    WHERE ht.id = fi.task_id
+);