sql: no rows in result set go/models/kv.go:18 (0x9f49b5) 对应的代码 err := db.QueryRow("SELECT id, `key`, value FROM kv where `key` = ?", key).Scan(&kv.Id, &kv.Key, &kv.Value) if err != nil { panic(err.Error()) //
### 下面这一行是标记①打印的内容 data not found,baz failed:bar failed:foo failed:sql:no rowsinresultset### 下面这些内容是标记②打印的内容sql:no rowsinresultsetfoo failed main.foo/path/to/main.go:24main.bar/path/to/main.go:30main.baz/path/to/main.go:35main.main/path/to/main.go:6...
Data error, sql: no rows in result set Now the output for the error doesn’t make much sense, so let’s try to add withMessage to it in the next example. Example of errors.WithMessage By using theWithMessage()method, the failure path in a developer's code could be given context wi...
No one can live a healthy and normal life in absence of sleep. //没有人能活的健康和正常生活缺乏睡眠。ParseInLocation is like Parse but differs in two important ways.paseInLocation和Pase类似但有2个非常不同的地方:First, in the absence of time zone information, Parse interprets a time as ...
// When zero, there is no limit on the number of connections in the pool. MaxActive int //最大的激活连接数,同时最多有N个连接 // Close connections after remaining idle for this duration. If the value // is zero, then idle connections are not closed. Applications should set ...
import ("database/sql""fmt")func GetSql() error {returnsql.ErrNoRows}func Call() error {returnGetSql()}func main() {err := Call()if err != nil {fmt.Printf("got err, %+v\n", err)}}//Outputs:// got err, sql:norowsinresultset ...
rows.Close(),用rows.Err()接收这个错误,Close方法可以多次调用。循环之后判断error是非常必要的。 for rows.Next() { // ... } if err = rows.Err(); err != nil { // handle the error here } 1. 2. 3. 4. 5. 6. 关闭Resultsets时的error ...
funcTestFib(t*testing.T){varfibTests=[]struct{inint// inputexpected int// expected result}{{1,1},{2,1},{3,2},{4,3},{5,5},{6,8},{7,13},}for_,tt:=range fibTests{actual:=Fib(tt.in)ifactual!=tt.expected{t.Errorf("Fib(%d) = %d; expected %d",tt.in,actual,tt.expecte...
上面代码的过程为:db.Query()表示向数据库发送一个query,defer rows.Close()非常重要,遍历rows使用rows.Next(), 把遍历到的数据存入变量使用rows.Scan(), 遍历完成后检查error。有几点需要注意: 检查遍历是否有error 结果集(rows)未关闭前,底层的连接处于繁忙状态。当遍历读到最后一条记录时,会发生一个内部EOF错...
rows := new(textRows) rows.mc = mc if resLen == 0 { rows.rs.done = true switch err := rows.NextResultSet(); err { case nil, io.EOF: return rows, nil default: return nil, err } } // 读取列信息数据填充到 rows 实例中 ...