未合並情況 SELECT a.id, b.name AS "role" FROM sys_user a INNER JOIN sys_user_role c ON a.id=c.user_id ...
SELECT DISTINCT substring index substring index a.device id, , , b.help topic id , , , NAME FROM tb tabrecord a JOIN mysql.help topic b ON b.help topic id lt length a.device id length REPLACE a.devic ...
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未合並情況 SELECT a.id, b.name AS "role" FROM sys_user a INNER JOIN sys_user_role c ON a.id=c.user_id ...
未合並情況 SELECT a.id, b.name AS "role" FROM sys_user a INNER JOIN sys_user_role c ON a.id=c.u ...
11g里面用listagg: select listagg(name,',') within (order by id) from table 10g里面用wm_concat:select wm_ ...
------------恢復內容開始------------ eg:有個value表 val列如下: SELECT * from (SELECT id,SUBSTRIN ...
with temp as( select 'China' nation ,'Guangzhou' city from dual union all select 'China' nation ,'Sh ...
通過oracle自帶的wmsys.wm_concat方法,該方法是將記錄的值使用逗號間隔拼接,如果想其它分隔符分割,可用replace使用方法如下:select wmsys.wm_concat(name) name from idtable;NAME---------- ---------------------------------------------------------------- ...
數據庫中的數據 需要批量的替換 , 替換某個詞,或特殊符號 sql語句: ...
遇到這么個情況: 比如: Msql里面的某個表的某個字段里面存儲的是一個人的地址,有一天這個地址的里面的某個地 名變了,那么他的地址也就要變: 比如: 原來是: [csharp] view plain copy ...