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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)
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