Tag: sql order

GROUP_CONCAT ORDER BY

我有一个表如: +———–+——-+————+ | client_id | views | percentage | +———–+——-+————+ | 1 | 6 | 20 | | 1 | 4 | 55 | | 1 | 9 | 56 | | 1 | 2 | 67 | | 1 | 7 | 80 | | 1 | 5 | 66 | | 1 | […]

MySQL:对GROUP_CONCAT值进行sorting

简而言之:有什么办法可以对GROUP_CONCAT语句中的值进行sorting? 查询: GROUP_CONCAT((SELECT GROUP_CONCAT(parent.name SEPARATOR " &raquo; ") FROM test_competence AS node, test_competence AS parent WHERE node.lft BETWEEN parent.lft AND parent.rgt AND node.id = l.competence AND parent.id != 1 ORDER BY parent.lft) SEPARATOR "<br />\n") AS competences 我得到这一行: 工艺品»细木工 行政»组织 我想要这样: 行政»组织 工艺品»细木工

SQL查询 – 在UNION中使用Order By

在从两个表中提取数据时,如何以编程方式对联合查询进行sorting? 例如, SELECT table1.field1 FROM table1 ORDER BY table1.field1 UNION SELECT table2.field1 FROM table2 ORDER BY table2.field1 引发exception 注意:这是试图在MS Access Jet数据库引擎上