用GOLANG V2 API实现谷歌BigQuery中的参数化查询

import (
    "context"
    "fmt"
    "cloud.google.com/go/bigquery"
)

2. 创建一个BigQuery客户端：
```go
ctx := context.Background()
client, err := bigquery.NewClient(ctx, "your-project-id")
if err != nil {
    // 处理错误
}
defer client.Close()

query := client.Query("SELECT * FROM your_table WHERE column = @param")
query.Parameters = []bigquery.QueryParameter{
    {Name: "param", Value: "param_value"},
}

it, err := query.Read(ctx)
if err != nil {
    // 处理错误
}
for {
    var row []bigquery.Value
    err := it.Next(&row)
    if err == iterator.Done {
        break
    }
    if err != nil {
        // 处理错误
    }
    // 处理查询结果
    fmt.Println(row)
}