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Oracle中quote的使用

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2016-06-07 16:42:361264browse

在SQL或者PLSQL中如果要表达一个带有特殊字符的字符串时,通常要用

在SQL或者PLSQL中如果要表达一个带有特殊字符的字符串时,,通常要用''包装起来。但如果字符串本身包含‘或者“这样的字符,那么实现起来有点繁琐。

比如:My Name is "Wang Xiu Li"

用sql实现

SQL> select 'My Name is "Wang Xiu Li"' names from dual;

NAMES
------------------------
My Name is "Wang Xiu Li"

Oracle提供了一个Q-quote的表达式,用来简化SQL或PLSQL中字符串的表示,quote实现

SQL> select q'[My Name is "Wang Xiu Li"]' names from dual;

NAMES
------------------------
My Name is "Wang Xiu Li"

注意语法:必须将要表示的字符串用一对特殊字符括起来,这对字符必须一致。

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