escape的用法 数据库中的escape是什么意思，怎么用的？
js\u4e2d\u7684escape\u65b9\u6cd5\u6709\u4ec0\u4e48\u7528\uff1fescape()\u548cunescape()\u662f\u4e00\u5bf9\u7f16\u7801\u89e3\u7801\u51fd\u6570\uff0c\u4e00\u822c\u7528\u4e8eURL\u4e2d\u975eASCII\u5b57\u7b26\u7684\u7f16\u7801\u548c\u89e3\u7801\uff01
\u5982\uff1aescape("&")\u8fd4\u56de%26,unescape("%26")\u8fd4\u56de&,\u90fd\u7528\u5341\u516d\u8fdb\u5236\u7f16\u7801\uff01
\u8fd9\u4e2a\u51fd\u6570\u5728AJAX\u6280\u672f\u5e94\u7528\u4e2d\u53d1\u9001\u4e2d\u6587\u5b57\u4e32\u5f88\u6709\u7528\uff0c\u7279\u522b\u662fAJAX\u5411GB2312\u7f16\u7801\u7684ASP\u7a0b\u5e8f\u53d1\u9001\u4e2d\u6587\u65f6\u5f88\u6709\u7528\uff01
\u5982\uff1a\u8981\u5c06name="\u4e1c\u65b9\u4e0d\u8d25"\u53d1\u7ed9red.asp(asp\u4e3agb2312\u5982\u679c\u4e3aUTF-8\u7684\u8bdd\u5c31\u4e0d\u7528\u7f16\u7801)\u524d\u5148\u505aescape(name),\u8fd9\u6837\u53d1\u5230red.asp\u65f6\u4e2d\u6587\u5c31\u4e0d\u4f1a\u4e71\u7801\uff0c\u6307\u63a5\u7528request\u63a5\u6536\u5c31\u884c\u4e86\uff01
\u7528\u6765\u8f6c\u8bd1\u7684\uff0c\u6bd4\u5982\u6570\u636e\u5e93\u4e2d\u6709\u4e2a\u8868 test\u5b57\u6bb5name \u4e2d\u5b58\u4e86\u5b57\u7b26'%'\uff0c\u90a3\u4e48\u6211\u67e5\u8be2\u7684\u65f6\u5019\u5982\u679c\u60f3\u67e5\u8be2\u7b2c\u4e8c\u4f4d\u662f '%'\u7684\u8bb0\u5f55\u5c31\u8981\u7528\u5230\u6a21\u7cca\u67e5\u8be2\uff0c\u4f46\u662f'%'\u662f\u6a21\u7cca\u67e5\u8be2\u7684\u901a\u914d\u7b26\uff0c\u6211\u4e0d\u80fd\u5982\u4e0b\u67e5\u8be2\uff1a
select * from test where name like '_%%';
\u8fd9\u6837\u7cfb\u7edf\u4e0d\u4f1a\u628a\u7b2c\u4e8c\u4e2a\u3010%\u3011\u5f53\u505a\u5b57\u7b26\uff0c\u53ea\u80fd\u8f6c\u8bd1\uff0c\u8f6c\u8bd1\u9ed8\u8ba4\u7684\u7b26\u53f7\u662f \u3010\\u3011
select * from test where name like '_\%%';
\u4f46\u662f\u53ef\u4ee5\u81ea\u5b9a\u4e49\u8f6c\u4e49\u7b26\uff0c\u8fd9\u65f6\u5019\u5c31\u7528 escape\uff0c\u6bd4\u5982\u5b9a\u4e49\u3010*\u3011\u4e3a\u8f6c\u4e49\u7b26
select * from test where name like '_*%%' escape '*';
---
\u4ee5\u4e0a\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\u3002
es.cape
[ə`skєp, I-, Z-; iˋskєip, єˋs-]
不及物动词
1 a. 逃走,逃亡,脱逃
barely ~ with one's life
仅以身免,险些丧命
【字源】源自法语,义指“脱下外套 (cape) 逃走”当一个想逃跑的人被一把抓住身上所穿的外套或大衣时,他仍会如金蝉脱壳般脱逃这种情形称作“从衣服中溜出”,后来用作“脱逃”的意思b. [从场所、监禁等] 逃走,逃亡 [from,out of] ; 逃[往…][to]
~ from prison
从监狱脱逃 [逃狱]
(cf. v.t. 1 {
比较})
~ to a foreign country
逃往外国
2 a. (从危险、灾难等) 逃脱,逃走; 免除
The deserter has ~d.
那名逃兵已经逃走
b. [从危险、灾难等] 逃脱,逃走,免除 [from,out of]
He ~d from his pursuers.
他从追捕中者手中逃脱
(cf v.t.1{
比较})
3
a. <液体、瓦斯等> [从…]漏出 [from,out of]
Gas is escaping from the range.
瓦斯从瓦斯炉灶漏出
b. <头发>[从…]露出 [from,out of]
Her hair had ~d from her hat.
她的头发露出于帽子外面
及物动词
1 a. (事先) 逃离,避免,逃避 <追捕、危险、灾难等>
~ prison
免于入狱
(cf. v.i.1 b)
~ one's pursuers [the pursuit]
避免落入追捕者的手中 [摆脱追捕]
(cf. v.i. 2 b)
He ~d death [punishment].
他死里逃生 [逃脱处罚]
She ~d infection.
她没有受到感染
【同义字】
avoid 有意识地、积极地远离可能的危险、不愉快
evade 比 avoid 更积极地运用某些手段来回避
elude 在危急时,将计就计从对方手中逃出
b. 免于<被…>
~ being killed
免于被杀
He narrowly ~d being hurt in the accident.
他在意外事件中差一点受伤
2
a. 避免,逃过 <他人的注意等>
The prisoner ~d notice by hiding in a laundry truck.
那名犯人躲藏在一辆洗衣店的卡车中而没有被发觉
b. 逃过<他人>的注意,不被人注意
Nothing ~s you!.
没有一件事逃得过你的注意!(你真细心!)
3
a. 逃过 <人的记忆> ,忘却
His name ~s my memory.
他的名字我记不起来了
b. 逃过<人>的记忆,忘却; 对<某人>不清楚 [不明白]
His name ~s me.
他的名字我想不起来了
I'm afraid your point ~s me.
我恐怕不明白你说的要点
4 <言语、微笑等> (不禁) 由 <人、口里> 流露出来
A cry ~d his lips.
他不禁叫了一声
名词
1 脱逃,逃亡,逃避; 避免[危险等] [from,out of]
make [effect] an ~
逃走,逃出
have a narrow [hairbreadth] ~
九死一生,死里逃生
make (good) one's ~ (
成功地) 逃走
There was no ~ from the enemy.
逃不出敌人之手
We had three ~s from the prison this year.
今年我们有三起越狱事件
2 (C)脱逃的方法; 避难装置; 逃路,排出的管道
→ fire escape.
3 (C) (瓦斯、水等的) 泄漏 [of from,out of]
There is an ~ of gas from the pipe.
有瓦斯从管子中漏出
4 (U) [又作 an ~] 逃避现实,消遣
read fiction as an ~
以读小说消遣
esacpe from some place
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