日常遇到mysql小问题汇总

根据字段查询表：

SELECT table_name, column_name from information_schema.columns WHERE column_name LIKE 'DepartID';

视图：

CREATE ALGORITHM=UNDEFINED DEFINER=`xoops_root`@`127.0.0.1` VIEW `v_form_number` AS SELECT `a`.`UUID` AS `uuid`,'' AS `worknumber`,

`a`.`turnname` AS `turnname`,`a`.`tablename` AS `tablename`,`a`.`pp` AS `pp`

FROM (`v_form` `a` LEFT JOIN `mt_jbpm_apply` `b` ON((`a`.`UUID` = `b`.`FOREIGNID`))) WHERE (1 = 2)

ALGORITHM：这是指定算法

DEFINER=`xoops_root`@`127.0.0.1`：这是指定权限，‘root@%’这意思是所有人的权限

Column 'dirction' in where clause is ambiguous

多表查询中，出现字段名一样的，