Go语言中如何解决并发数据库查询优化问题？

import (
    "database/sql"
    _ "GitHub.com/go-sql-driver/Mysql"
)

func main() {
    db, err := sql.Open("mysql", "user:passWord@tcp(127.0.0.1:3306)/database")
    if err != nil {
        panic(err.Error())
    }
    defer db.Close()

    // 使用连接池执行查询语句
    rows, err := db.Query("SELECT * FROM table")
    if err != nil {
        panic(err.Error())
    }
    defer rows.Close()

    // 处理查询结果
    for rows.Next() {
        var id int
        var name string
        err = rows.Scan(&id, &name)
        if err != nil {
            panic(err.Error())
        }
        // 处理每一行数据
    }

    if err = rows.Err(); err != nil {
        panic(err.Error())
    }
}

import (
    "database/sql"
    _ "github.com/go-sql-driver/mysql"
    "sync"
)

type Result struct {
    Id   int
    Name string
}

func main() {
    db, err := sql.Open("mysql", "user:password@tcp(127.0.0.1:3306)/database")
    if err != nil {
        panic(err.Error())
    }
    defer db.Close()

    var wg sync.WaitGroup
    rows, err := db.Query("SELECT * FROM table")
    if err != nil {
        panic(err.Error())
    }
    defer rows.Close()

    results := make(chan Result)

    for rows.Next() {
        var id int
        var name string
        err = rows.Scan(&id, &name)
        if err != nil {
            panic(err.Error())
        }

        wg.Add(1)
        go func(id int, name string) {
            defer wg.Done()
            // 执行并发查询逻辑
            // ...

            // 将结果发送到channel
            result := Result{
                Id:   id,
                Name: name,
            }
            results <- result
        }(id, name)
    }

    go func() {
        wg.Wait()
        close(results)
    }()

    // 处理查询结果
    for result := range results {
        // 处理每个查询结果
    }
}