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如下例子:
select substr('LL$$BOAT$$he很帅',
1,
instr('LL$$BOAT$$he很帅', '$$', 1, 1) - 1),
substr('LL$$BOAT$$he很帅',
instr('LL$$BOAT$$he很帅', '$$', 1, 1) + 2,
instr('LL$$BOAT$$he很帅', '$$', 1, 2) - 2 -
instr('LL$$BOAT$$he很帅', '$$', 1, 1)),
substr('LL$$BOAT$$he很帅', instr('LL$$BOAT$$he很帅', '$$', 1, 2) + 2)
from dual t;
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原文地址:http://blog.csdn.net/helloboat/article/details/44177579