func (fc *firebirdsqlConn) Begin() (driver.Tx, error) {
tx, err := newFirebirdsqlTx(fc.wp)
fc.tx = tx
fc.isAutocommit = false
return driver.Tx(tx), err
}
func (fc *firebirdsqlConn) begin(isolationLevel int) (driver.Tx, error) {
tx, err := newFirebirdsqlTx(fc, isolationLevel, false)
fc.tx = tx
return driver.Tx(tx), err
}