package mysql import ( "context" "github.com/c9s/rockhopper/v2" ) func init() { AddMigration("main", up_main_fixProfitSymbolLength, down_main_fixProfitSymbolLength) } func up_main_fixProfitSymbolLength(ctx context.Context, tx rockhopper.SQLExecutor) (err error) { // This code is executed when the migration is applied. _, err = tx.ExecContext(ctx, "ALTER TABLE profits\n CHANGE symbol symbol VARCHAR(20) NOT NULL;") if err != nil { return err } return err } func down_main_fixProfitSymbolLength(ctx context.Context, tx rockhopper.SQLExecutor) (err error) { // This code is executed when the migration is rolled back. _, err = tx.ExecContext(ctx, "SELECT 1;") if err != nil { return err } return err }