Skip to content

how can i query with bit field in where clause #1608

Open
@superceix

Description

table info

-- table define
CREATE TABLE `t0` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `c1` int(11) NOT NULL,
  `c2` varchar(64) COLLATE utf8mb4_bin NOT NULL,
  `c3` bit(4) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin

-- row insert
insert into t0 values (1,1,'aaa',b'1100');

Example code

import (
	"database/sql"
	"fmt"

	_ "github.com/go-sql-driver/mysql"
)

func main() {
	connStr := "xxx:xxx@tcp(xxxxx:xxxx)/?timeout=3600s"
	if conn, err := sql.Open("mysql", connStr); err != nil {
		fmt.Print("ReCreate conn failure!", err.Error())
	} else {
		sql1 := "SELECT c3 FROM `test1`.`t0` WHERE `c2`=?"
		rows1 := conn.QueryRow(sql1, "aaa")
		c3 := []byte{}
		rows1.Scan(&c3)  // row scan success, and get c3 is '[0] = 12 = 0xc' in debug

		sql := "SELECT c2 FROM `test1`.`t0` WHERE `c3`=?"
		rows, err := conn.Query(sql, c3)
		if err != nil {
			fmt.Printf("quert errpor")
		}
		for rows.Next() {
			var c2 string
			if err := rows.Scan(&c2); err != nil {
				fmt.Print("Row.Scan rawRecord Error", err)
			}
			fmt.Printf("c2:%s", c2)
		}
	}
}

no rows result after conn.Query(sql, c3)

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions