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https://www.cnblogs.com/gdzhong/p/4726315.html?tvd
SQL代码 列转行
selectREGEXP_SUBSTR(a.rolecode ,"[^,]+",1,l)rolecodefrom (select "a,aa,aaa" rolecode from dual) a,(SELECT LEVEL l FROM DUAL CONNECT BY LEVEL<=100) bWHERE l <=LENGTH(a.rolecode) - LENGTH(REPLACE(rolecode,","))+1
或者
with a as (select "ABC,AA,AD,ABD,JI,CC,ALSKD,ALDKDJ" id from dual)select regexp_substr(id,"[^,]+",1,rownum) id from aconnect by rownum <= length(regexp_replace(id,"[^,]+"))
SQL代码 行转列
select name,coures,to_char(wmsys.wm_concat(xxx.score)) c from (select "小明" name,"语文" coures,90 score from dual union all select "小明" name,"语文" coures,91 score from dual union all select "小明" name,"数学" coures,90 score from dual union all select "小明" name,"数学" coures,91 score from dual) xxx group by xxx.name,coures
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