我有一个包含多个表的数据库，例如：
| usage_777771000034915 |
| usage_777771000034916 |
| usage_777771000034918 |
| usage_777771000034923 |
| usage_777771000034926 |
| usage_777771000034928 |
+-----------------------+
7036 rows in set (0.11 sec)
现在;我想为每个表选择一个特定的字段; 我想是
SELECT field FROM (inner SELECT ...) should work.
我已经让内部SELECT工作如下：
SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE table_schema = 'cdba_cpe_history' and TABLE_NAME like 'usage_%'
但是;无法使完成的嵌套查询起作用。
任何想法都会很棒：
到目前为止我有：
select cdba_cpe_history.x.dlbytes from (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE table_schema = 'cdba_cpe_history' and TABLE_NAME like 'usage_%') AS x;
但它会产生“unknow colum”
问候。