SQL查询在日期之后返回数据。日期设置为varchar

Question

尝试运行将在特定日期之后返回所有数据的查询。日期设置为varchar而不是日期。

我有：

SELECT employee_id, emp_firstname, emp_lastname, custom79 AS  'First Pay Date', custom6 AS  'Agency', custom56 AS  'Country of Homebase'
FROM  `hs_hr_employee` 
WHERE custom6 LIKE  'Brookfield'
AND custom61 LIKE  'active-oam'
AND custom79 >  '13-07-2012'

帮助会很棒，因为我不确定如何将查询转换为日期

使用UNIX，phpmyadmin，sql

Answer 1

试试这样：

SELECT employee_id, emp_firstname, emp_lastname, custom79 AS  'First Pay Date', custom6 AS  'Agency', custom56 AS  'Country of Homebase'
FROM  `hs_hr_employee` 
WHERE custom6 LIKE  'Brookfield'
AND custom61 LIKE  'active-oam'
AND STR_TO_DATE(custom79, '%d-%m-%Y') > '2012-07-13'