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oracle的escape转义字符

Jun 07, 2016 pm 03:50 PM
escape oracle character definition escape

定义:escape关键字经常用于使某些特殊字符,如通配符:'%','_'转义为它们原 来的字符的意义,被定义的转义字符通常使用'/',但是也可以使用其他的符号。 实例: SQL select * from t11 where name like '%_%'; NAME ---------- aa_a aaa SQL select * from t

定义:escape关键字经常用于使某些特殊字符,如通配符:'%','_'转义为它们原

来的字符的意义,被定义的转义字符通常使用'/',但是也可以使用其他的符号。

实例:

SQL> select * from t11 where name like '%_%';

NAME
----------
aa_a
aaa
SQL> select * from t11 where name like '%/_%' escape '/';

NAME
----------
aa_a

注意:如果是 '/' 作为检索字符, 必须 用 '/' 作为转义符, 正斜扛也一样.
select * from wan_test where psid like '%//%' escape '/'

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