Mysql 如何通过无并集优化以下查询顺序

我需要一个基于字符串搜索列的逻辑

考虑以下查询。在下面的查询中，我想在customer表中搜索字符串“test”。如果在customer name（客户名称）列中找到，则需要位于顶部，然后是根据customer_slug（客户名称）找到的列

SELECT * FROM `customer_list` WHERE customer_name = 'test' UNION
SELECT * FROM `customer_list` WHERE customer_slug = 'test'

从客户列表中选择*
“测试”在哪里（客户名称、客户名称）
按“测试”客户名称订购，
“测试”客户_slug

从customer\u列表中选择*，其中customer\u name='test'或customer\u slug='test'

SELECT * FROM customer_list 
where 'test' in (customer_name, customer_slug)
order by 'test' <> customer_name,
         'test' <> customer_slug

SELECT *, IF(customer_name = 'test', 1, 2) AS priority
FROM customer_list
WHERE customer_name = 'test'
OR customer_slug = 'test'
ORDER BY priority