max(sal) keep(dense_rank LAST order by sal) over (partition by deptno) as max_sal, wmsys.wm_concat(ename) keep(dense_rank LAST order by sal) over (partition by deptno) as 工资最高的人, wmsys.wm_concat(ename) keep(dense_rank FIRST order by sal) over (partition by deptno) as 工资...
concat函数 concat方法 pandas concat mysql concat _.concat lodash vs Array.prototype.concat() js array concat js的concat js concat 无效 js中concat wm_concat mysql中concat mysql concat作用 mysql concat报错 Concat JSON对象 页面内容是否对你有帮助?
出现这个错误很多时候是使用了wmsys.wm_concat的同时使用了group ,distinct 或者union, 本来两者没有问题,问题在于: Oracle Database 10g Enterprise Edition Release 10.2.0.5.0以后的版本wmsys.wm_concat查询出的是LOB类型 oralce的SQL语句中若查询了LOB字段是不能使用distinct,union,和group by等关键字的。 并且在1...
一.将两个列拼接成一个列 数据源 select CONCAT(TRIM(username),'(',locaiton,')') from user2 解释: TRIM()函数用于去除字符串左右两边的空格(字符串字之间的空格不能去除). 结果:【原】Oracle拼接字段 select FLIGHT_DATE, replace(wm_concat(FLIGHT_NO), ',', '*') FLIGHT_NO from T2001 group ...
或concat函数可以实现 SQL Code 12 select concat(id,username) str from app_userselect id||username str from app_user 字符串转多列 实际上就是拆分字符串的问题,可以使用 substr.instr.regexp_substr函数方式 字符串转多行 使用union all函数等方式 wm_concat函数 首先让我们来看看这个神奇的函数wm_concat(...
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pg_catalog.wm_concat(str text) - aggregate values to comma separatated list pg_catalog.median(float4) - calculate a median pg_catalog.median(float8) - calculate a median pg_catalog.to_number(text) - converts a string to a number ...
Mybatis修改Postgres中的json数据,实现部分修改 <update id="updateNodeInfo"> update tb_xxx set node = jsonb_concat(node, #{node,typeHandler=com.fly.MapHandler}::jsonb) where id = #{id} </update> 其中node字段类型为jsonb,主要使用jsonb_concat函数来实现部分更新...
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