Method AddColumn

backend/impls/dalgorm/dalgorm.go:327–334

AddColumn add one column for the table

(table, columnName string, columnType dal.ColumnType)

// AddColumn add one column for the table
func (d *Dalgorm) AddColumn(table, columnName string, columnType dal.ColumnType) errors.Error {
	// work around the error `cached plan must not change result type` for postgres
	// wrap in func(){} to make the linter happy
	defer func() {
		_ = d.Exec("SELECT * FROM ? LIMIT 1", clause.Table{Name: table})
	}()
	return d.Exec("ALTER TABLE ? ADD ? ?", clause.Table{Name: table}, clause.Column{Name: columnName}, clause.Expr{SQL: columnType.String()})
}

// DropColumns drop one column from the table
func (d *Dalgorm) DropColumns(table string, columnNames ...string) errors.Error {