MySQL sorts the queried result set according to the specified sequence

During the development process, you may encounter , How to sort the queried result set in the specified order , You can use FIELD function

• FIELD(str,str1,str2,str3)：
  among str Is the field name , It can be done to SQL The result set of the query Sort in the specified order , Field str Press str1,str2,str3 Returns the query result set in the order of

Case study ： The result of the query will be pushed to the status （0: normal 1: Youtui 2: Off the shelf ） Push by priority , normal , Off shelf sorting , If the status is the same, it will be updated in descending order

select  Query data  from  The query table  where  Query criteria  order by FIELD(push_status,1,0,2)

stay mybatisPlus Can be used in

queryWrapper.last("order by FIELD(push_status,1,0,2");

give an example ：

SELECT t_enterprise.name,t_enterprise.audit_status FROM t_enterprise WHERE delete_flag = 0 order by audit_status

SELECT t_enterprise.name,t_enterprise.audit_status FROM t_enterprise WHERE delete_flag = 0 order by FIELD(audit_status,1,0,2)

The top two sql Sentences are patted , One is the default ascending order , One is used FIELD function
The results are as follows
first sql

the second sql