c.Build(stmt)
		case clause.Expression:
			v.Build(stmt)
		case driver.Valuer:
			stmt.Vars = append(stmt.Vars, v)
			stmt.DB.Dialector.BindVarTo(writer, stmt, v)
		case []byte:
			stmt.Vars = append(stmt.Vars, v)
			stmt.DB.Dialector.BindVarTo(writer, stmt, v)
		case []interface{}:
			if len(v) > 0 {
				writer.WriteByte('(')
				stmt.AddVar(writer, v...)
				writer.WriteByte(')')
			} else {

											vars := onStmt.Vars
											for idx, v := range vars {
												bindvar := strings.Builder{}
												onStmt.Vars = vars[0 : idx+1]
												db.Dialector.BindVarTo(&bindvar, &onStmt, v)
												onSQL = strings.Replace(onSQL, bindvar.String(), "?", 1)
											}

											exprs = append(exprs, clause.Expr{SQL: onSQL, Vars: vars})
										}
									}
								}

			)

			subdb.Statement.Vars = make([]interface{}, 0, len(vars))
			for _, vv := range vars {
				subdb.Statement.Vars = append(subdb.Statement.Vars, vv)
				bindvar := strings.Builder{}
				subdb.BindVarTo(&bindvar, subdb.Statement, vv)
				sql = strings.Replace(sql, bindvar.String(), "?", 1)
			}

			subdb.Statement.SQL.Reset()
			subdb.Statement.Vars = stmt.Vars
			if strings.Contains(sql, "@") {

		if field.DefaultValueInterface != nil {
			defaultStmt := &gorm.Statement{Vars: []interface{}{field.DefaultValueInterface}}
			m.Dialector.BindVarTo(defaultStmt, defaultStmt, field.DefaultValueInterface)
			expr.SQL += " DEFAULT " + m.Dialector.Explain(defaultStmt.SQL.String(), field.DefaultValueInterface)
		} else if field.DefaultValue != "(-)" {