转成golang
时间: 2023-09-29 18:09:45 浏览: 38
以下是将该 SQL 查询语句转换为 Golang 代码的示例:
```go
package main
import (
"database/sql"
"fmt"
_ "github.com/go-sql-driver/mysql"
)
func main() {
db, err := sql.Open("mysql", "user:password@tcp(host:port)/database")
if err != nil {
panic(err.Error())
}
defer db.Close()
rows, err := db.Query(`
SELECT a.*, COUNT(DISTINCT b.id) AS topicNum, COUNT(DISTINCT c.id) AS groupNum
FROM resource_instance_rocketmq a
LEFT JOIN resource_rocketmq_topic b ON a.instance_id = b.instance_id
LEFT JOIN resource_rocketmq_group c ON a.instance_id = c.instance_id
WHERE a.instance_name LIKE '%gaotu%'
GROUP BY a.instance_id
ORDER BY topicNum ASC
LIMIT 3 OFFSET 2
`)
if err != nil {
panic(err.Error())
}
defer rows.Close()
for rows.Next() {
// 读取查询结果,并进行处理
}
}
```
请将代码中的 `user`、`password`、`host`、`port`、`database` 分别替换为您的 MySQL 数据库的实际连接信息。同时,您需要安装 `go-sql-driver/mysql` 包以便 Golang 代码连接 MySQL 数据库。