golang里，操作mysql数据库，使用查询语句的时候，一般的写法 rows, err := db.Query("SELECT name from table) if err != nil { return } for rows.Next() { var name string err = rows.Scan(&name) if err != nil { return } } 当查出来的字段有NULL的时候，就会报这样的错误unsupported driver -> Scan pair:
模型关系： from django.db import models # Create your models here. class Author(models.Model): nid = models.AutoField(primary_key=True) name = models.CharField(max_length=32) age = models.IntegerField() # 与AuthorDetail建立一对一的关系 authorDetail = models.OneToOneField(to="AuthorDetail", on_delete=models.CASCADE) class AuthorDetail(models.Model): nid = models....阅读全文
rows,err := app.PLADB.Query("SELECT TOP 1 convert(bigint,ID) AS [FSourceInterID] FROM History") if err != nil { return } defer rows.Close() var s interface{} for rows.Next() { err = rows.Scan(&s) if err != nil { panic(err) } fmt.Printf("x is of type %T\n", s) fmt.Println(s) } log.Println(app.PLADB.Query("inse...阅读全文
``` var r = rand.New(rand.NewSource(time.Now().UnixNano())) func generate(writer *PipeWriter) { arr := make([]byte, 32) for { for i := 0; i < 32; i++ { arr[i] = byte(r.Uint32() >> 24)//在这里 } n, err := writer.Write(arr) if nil != err { log.Fatal(err) } time.S...阅读全文
举个例子 我在后台写了这么个办法 获取数据库的值 我的问题就是 这个是个列表可能有几百几千条数据我需要嵌套到HTML中，如何将获取的数据嵌套HTML的呢 最好有个例子给我学习学习 ~~~ rows, err := mysql.DB.Query("select uid,pass from user_list where user ='root123'") defer rows.Close() if err != nil { fmt.Fprintln(w, err) } for rows.Next() { var uid int var pass string err = rows.Scan(&uid, &pass) if err !...阅读全文
