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Oracle String 合并与拆分

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Release: 2016-06-07 17:03:16
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Oracle 10g及以上版本长字符串拆分成多行, 利用正则表达式, 功能类似于split:select dbms_lob.substr(regexp_substr(

Oracle 10g及以上版本

长字符串拆分成多行, 利用正则表达式, 功能类似于split:

select dbms_lob.substr(regexp_substr('abc,1234,ABCD,test', '[^,]+', 1, x.n)) field from dual, (select rownum n from dual connect by rownum

合并多行String记录:

table a 如下

字段   city

row1  上海

row2  北京

row3  昆明

row4  长春

select wmsys.wm_concat(city) from a; 

结果如下

上海,北京,昆明,长春,

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