added plan debug logs

Author: LostImagin4tion

sql/ydb/migrate.go

@@ -33,6 +33,7 @@ func (p *planApply) PlanChanges(
 	changes []schema.Change,
 	opts ...migrate.PlanOption,
 ) (*migrate.Plan, error) {
+	fmt.Printf("[PLAN CHANGES]")
 	state := &state{
 		conn: p.conn,
 		Plan: migrate.Plan{
@@ -229,6 +230,9 @@ func (s *state) modifyTable(modify *schema.ModifyTable) error {
 		}
 	}
 
+	fmt.Printf("[PLAN CHANGES] drop indexes %+v", dropIndexOps)
+	fmt.Printf("[PLAN CHANGES] add indexes %+v", addIndexOps)
+
 	// Drop indexes first, then alter table, then add indexes
 	if err := s.dropIndexes(modify, modify.T, dropIndexOps...); err != nil {
 		return err