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ORACLE列转行--某字段按指定分隔符转多行
2022-07-06 07:11:00 【游戏编程】
在数据存储数据库中,常常存在信息以特殊符号隔开形式存储在一个字段里
将代码拷贝使用时,需要更改表名、字段名、分隔字符等(注:使用的时候还需将将N替换为分隔符的长度,如分割符“,”,长度位1,则将N替换位1,一共4处)。
SELECT id,substr(a.city, instr(a.city, '、', 1, levels.lvl) + N, instr(a.city, '、', 1, levels.lvl + 1) -(instr(a.city, '、', 1, levels.lvl) + 1)-(N-1)) as city,usernameFROM(SELECT id,'、' || city || '、' AS city,username,(length(city || '、') - nvl(length(REPLACE(city, '、')), 0))/N AS cntFROM userinfomation) a,(SELECT rownum AS lvlFROM (SELECT (MAX(length(city || '、') - nvl(length(REPLACE(city, '、')), 0)))/N max_len FROM userinfomation)CONNECT BY LEVEL <= max_len) levelsWHERE levels.lvl <= a.cntORDER BY id,levels.lvl;
作者:LW_dcwange
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