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MySQL數(shù)據(jù)庫技巧基礎(chǔ)操作：增、刪、改、查，具體sql語句如下：

import console;

import mysql.client;

console.log("正在連接數(shù)據(jù)庫服務(wù)器...");

var mysqlDb,err = mysql.client(

server = "localhost"; //數(shù)據(jù)庫服務(wù)器,可省略默認(rèn)為localhost

uid = "root";//用戶名,可省略默認(rèn)為root

pwd = "用戶密碼";

);

if(!mysqlDb){

console.log("連接數(shù)據(jù)庫失敗",err)

return;

}

//如果數(shù)據(jù)庫不存在創(chuàng)建數(shù)據(jù)庫，并自動(dòng)選擇數(shù)據(jù)庫

mysqlDb.createDb("testAAutoMySqlClient")

sql = /*

CREATE TABLE `library` (

`name` varchar(100) NOT NULL,

`auditing` tinyint(1) DEFAULT '0',

`bytes` BLOB,

PRIMARY KEY (`name`),

UNIQUE KEY `name` (`name`)

) ENGINE=MyISAM DEFAULT CHARSET=utf8;

*/

mysqlDb.exec(sql);//執(zhí)行SQL語句

var ret,err = mysqlDb.listTables()

for tbl in ret.each(){

console.log("發(fā)現(xiàn)數(shù)據(jù)表:",tbl);

}

//增 - 使用命名參數(shù)

mysqlDb.exec("REPLACE INTO `library` values('名字1',@num,@str)

,('名字2',@num,@str)

,('名字3',@num,@str)

", {

num = 123;

str = "測試:'這是字符串!'命名參數(shù)可以自動(dòng)處理字符串轉(zhuǎn)義";

} )

//刪 - 使用format格式化參數(shù)

mysqlDb.exec("DELETE FROM `%s` where name='%s';","library",'名字3')

//改

mysqlDb.exec("UPDATE `library` SET auditing = 111 WHERE name = '名字2';" );

//查詢數(shù)據(jù)并返回記錄集,limit指定返回記錄集索引

var result = mysqlDb.query("select * from `library` limit 0,10");

for name,auditing,bytes in result.each(){

io.print( name,auditing,bytes ); //逐行輸出所有記錄

}

//移除數(shù)據(jù)庫

mysqlDb.dropDb("testAAutoMySqlClient");

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