#ORACLE 每日一点# ESCAPE用法
作用: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(字母数字也可)。 SQL SELECT * FROM emp WHERE ename LIKE 'a%%' ESCAPE 'a'; EMPNO ENAME JOB MGR HIR
作用: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(字母数字也可)。
SQL> SELECT * FROM emp WHERE ename LIKE 'a%%' ESCAPE 'a';
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
----- ---------- --------- ----- ----------- --------- --------- ------
7935 %CC CLERK 7782 7/11/2012 1200.00 20
ESCAPE 'a' 将通配符%转义字符

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