示例#1
0
文件: main.go 项目: nengwang/tidb
func executeLine(tx *sql.Tx, txnLine string) error {
	if tidb.IsQuery(txnLine) {
		rows, err := tx.Query(txnLine)
		if err != nil {
			return errors.Trace(err)
		}
		defer rows.Close()
		cols, err := rows.Columns()
		if err != nil {
			return errors.Trace(err)
		}

		values := make([][]byte, len(cols))
		scanArgs := make([]interface{}, len(values))
		for i := range values {
			scanArgs[i] = &values[i]
		}

		var datas [][]string
		for rows.Next() {
			err := rows.Scan(scanArgs...)
			if err != nil {
				return errors.Trace(err)
			}

			data := make([]string, len(cols))
			for i, value := range values {
				if value == nil {
					data[i] = "NULL"
				} else {
					data[i] = string(value)
				}
			}

			datas = append(datas, data)
		}

		// For `cols` and `datas[i]` always has the same length,
		// no need to check return validity.
		result, _ := printer.GetPrintResult(cols, datas)
		fmt.Printf("%s", result)

		if err := rows.Err(); err != nil {
			return errors.Trace(err)
		}
	} else {
		// TODO: rows affected and last insert id
		_, err := tx.Exec(txnLine)
		if err != nil {
			return errors.Trace(err)
		}
	}
	return nil
}
示例#2
0
文件: main.go 项目: henrylee2cn/tidb
func executeLine(tx *sql.Tx, txnLine string) error {
	start := time.Now()
	if tidb.IsQuery(txnLine) {
		rows, err := tx.Query(txnLine)
		elapsed := time.Since(start).Seconds()
		if err != nil {
			return errors.Trace(err)
		}
		defer rows.Close()
		cols, err := rows.Columns()
		if err != nil {
			return errors.Trace(err)
		}

		values := make([][]byte, len(cols))
		scanArgs := make([]interface{}, len(values))
		for i := range values {
			scanArgs[i] = &values[i]
		}

		var datas [][]string
		for rows.Next() {
			err := rows.Scan(scanArgs...)
			if err != nil {
				return errors.Trace(err)
			}

			data := make([]string, len(cols))
			for i, value := range values {
				if value == nil {
					data[i] = "NULL"
				} else {
					data[i] = string(value)
				}
			}

			datas = append(datas, data)
		}

		// For `cols` and `datas[i]` always has the same length,
		// no need to check return validity.
		result, _ := printer.GetPrintResult(cols, datas)
		fmt.Printf("%s", result)

		switch len(datas) {
		case 0:
			fmt.Printf("Empty set")
		case 1:
			fmt.Printf("1 row in set")
		default:
			fmt.Printf("%v rows in set", len(datas))
		}
		fmt.Printf(" (%.2f sec)\n", elapsed)
		if err := rows.Err(); err != nil {
			return errors.Trace(err)
		}
	} else {
		// TODO: last insert id
		res, err := tx.Exec(txnLine)
		elapsed := time.Since(start).Seconds()
		if err != nil {
			return errors.Trace(err)
		}
		cnt, err := res.RowsAffected()
		if err != nil {
			return errors.Trace(err)
		}
		switch cnt {
		case 0, 1:
			fmt.Printf("Query OK, %d row affected", cnt)
		default:
			fmt.Printf("Query OK, %d rows affected", cnt)
		}
		fmt.Printf(" (%.2f sec)\n", elapsed)
	}
	return nil
}