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Format and remove 05.3.md spaces

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vCaesar
2017-06-10 11:52:37 +08:00
parent ff3ac9441a
commit f95509fc94
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@@ -15,97 +15,97 @@ Go支持sqlite的驱动也比较多，但是好多都是不支持database/sql接
示例的数据库表结构如下所示，相应的建表SQL： 示例的数据库表结构如下所示，相应的建表SQL：
```sql ```sql
CREATE TABLE `userinfo` ( CREATE TABLE `userinfo` (
`uid` INTEGER PRIMARY KEY AUTOINCREMENT, `uid` INTEGER PRIMARY KEY AUTOINCREMENT,
`username` VARCHAR(64) NULL, `username` VARCHAR(64) NULL,
`departname` VARCHAR(64) NULL, `departname` VARCHAR(64) NULL,
`created` DATE NULL `created` DATE NULL
); );
CREATE TABLE `userdeatail` ( CREATE TABLE `userdeatail` (
`uid` INT(10) NULL, `uid` INT(10) NULL,
`intro` TEXT NULL, `intro` TEXT NULL,
`profile` TEXT NULL, `profile` TEXT NULL,
PRIMARY KEY (`uid`) PRIMARY KEY (`uid`)
); );
``` ```
看下面Go程序是如何操作数据库表数据:增删改查 看下面Go程序是如何操作数据库表数据:增删改查
```Go ```Go
package main package main
import ( import (
"database/sql" "database/sql"
"fmt" "fmt"
"time" "time"
_ "github.com/mattn/go-sqlite3" _ "github.com/mattn/go-sqlite3"
) )
func main() { func main() {
db, err := sql.Open("sqlite3", "./foo.db") db, err := sql.Open("sqlite3", "./foo.db")
checkErr(err)
//插入数据
stmt, err := db.Prepare("INSERT INTO userinfo(username, departname, created) values(?,?,?)")
checkErr(err)
res, err := stmt.Exec("astaxie", "研发部门", "2012-12-09")
checkErr(err)
id, err := res.LastInsertId()
checkErr(err)
fmt.Println(id)
//更新数据
stmt, err = db.Prepare("update userinfo set username=? where uid=?")
checkErr(err)
res, err = stmt.Exec("astaxieupdate", id)
checkErr(err)
affect, err := res.RowsAffected()
checkErr(err)
fmt.Println(affect)
//查询数据
rows, err := db.Query("SELECT * FROM userinfo")
checkErr(err)
for rows.Next() {
var uid int
var username string
var department string
var created time.Time
err = rows.Scan(&uid, &username, &department, &created)
checkErr(err) checkErr(err)
fmt.Println(uid)
//插入数据 fmt.Println(username)
stmt, err := db.Prepare("INSERT INTO userinfo(username, departname, created) values(?,?,?)") fmt.Println(department)
checkErr(err) fmt.Println(created)
res, err := stmt.Exec("astaxie", "研发部门", "2012-12-09")
checkErr(err)
id, err := res.LastInsertId()
checkErr(err)
fmt.Println(id)
//更新数据
stmt, err = db.Prepare("update userinfo set username=? where uid=?")
checkErr(err)
res, err = stmt.Exec("astaxieupdate", id)
checkErr(err)
affect, err := res.RowsAffected()
checkErr(err)
fmt.Println(affect)
//查询数据
rows, err := db.Query("SELECT * FROM userinfo")
checkErr(err)
for rows.Next() {
var uid int
var username string
var department string
var created time.Time
err = rows.Scan(&uid, &username, &department, &created)
checkErr(err)
fmt.Println(uid)
fmt.Println(username)
fmt.Println(department)
fmt.Println(created)
}
//删除数据
stmt, err = db.Prepare("delete from userinfo where uid=?")
checkErr(err)
res, err = stmt.Exec(id)
checkErr(err)
affect, err = res.RowsAffected()
checkErr(err)
fmt.Println(affect)
db.Close()
} }
func checkErr(err error) { //删除数据
if err != nil { stmt, err = db.Prepare("delete from userinfo where uid=?")
panic(err) checkErr(err)
}
res, err = stmt.Exec(id)
checkErr(err)
affect, err = res.RowsAffected()
checkErr(err)
fmt.Println(affect)
db.Close()
}
func checkErr(err error) {
if err != nil {
panic(err)
} }
}
``` ```
我们可以看到上面的代码和MySQL例子里面的代码几乎是一模一样的，唯一改变的就是导入的驱动改变了，然后调用`sql.Open`是采用了SQLite的方式打开。 我们可以看到上面的代码和MySQL例子里面的代码几乎是一模一样的，唯一改变的就是导入的驱动改变了，然后调用`sql.Open`是采用了SQLite的方式打开。