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group By ConCAt

所有版本的oracle都可以使用select wm_concat(name) as name from user; 但如果是oracle11g,使用select listagg(name, ',') within group( order by ...

有点奇怪, 我这里测试, 好像没什么超过5 的问题. CREATE TABLE tab_name ( name VARCHAR(8) ); INSERT INTO tab_name SELECT '张一' UNION ALL SELECT '张二' UNION ALL SELECT '张三' UNION ALL SELECT '张四' UNION ALL SELECT '张五' UNION A...

老版本可以使用wm_concat select wm_concat(name) from tbname ; 11gr2可以使用listagg select listagg(name,',') within group(order by name) from...

将查出来的数组进行编码 由于是数组所以要循环编码 使用iconv("gbk","utf-8",字符串); 注意第三个值一定要是字符串,

用法就像聚合函数一样,通过Group by语句,把每个Group的一个字段,拼接起来。非常...可以考虑使用wmsys.wm_concat方法,该方法是将记录的值使用逗号间隔拼接使用方法如...

select ID,group_concat(NAME) as NAME from table group by ID; select ID,group_concat(NAME SEPARATOR ';') as NAME from a group by ID;

CREATE TABLE #temp ( logo varchar(10), num int)GOINSERT INTO #tempSELECT 'huawei', 12 UNION ALLSELECT 'ZTE', 13 UNION ALLSELECT 'moto', 14 UNION ALLSELECT 'huawei', 14 UNION ALLSELECT 'moto', 15 UNION ALLSELECT 'moto', 16GOSELE...

您好. 以前有高人写过类似的: select id,group_concat(re_id order by re_id separator ",") as re_id from tablename group by id 方法2: ...

select sum(t1.money), t1.startYm from ( select obj.money as money, concat(year(obj.startDate), '-', month(obj.startDate)) as startYm from incomeExpense ) t1 where 1 = 1 groub by t1.startYm

mysql中CONCAT的用法如下: 1.>CONCAT拼接字符串 SELECT CONCAT('HELLO', ' WORLD') AS expr >GROUP_CONCAT可以和GROUP BY语句一起用

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