refactor:②-2内部結合に変更しWhere条件削除

rds_mysql/stored_procedure/crm_history.sql

@@ -70,15 +70,13 @@ BEGIN
 	-- ②-2 「②-1」で取得した全件に更新処理を行う
 	SET @update_end_datetime = '
 		UPDATE $$target_table$$ tt 
-			LEFT JOIN $$target_table$$_make_history_tmp mht 
+			JOIN $$target_table$$_make_history_tmp mht 
 				ON tt.id = mht.id 
 				AND tt.start_datetime = mht.min_start_datetime 
 		SET
 			end_datetime = mht.max_start_datetime - INTERVAL 1 SECOND 
 			, upd_user = CURRENT_USER() 
 			, upd_date = CURRENT_TIMESTAMP()
-		WHERE
-			mht.id IS NOT NULL
 	';
 	SET @update_end_datetime = REPLACE(@update_end_datetime, "$$target_table$$", target_table);
 	SET @update_end_datetime = REPLACE(@update_end_datetime, "$$target_column$$", target_column);