Example:
The data table is demotable. The fields include ID, condition1, condition2, condition3, condition4, and condition5.
The requirement is to query the content of any two or more conditions in demotable, including condition1, condition2, condition3, condition4, and condition5.
You can use case when to implement this condition. nested subquery statements are required.
SQL statementCodeExample:Copy codeThe Code is as follows: Select * From demotable
Where (select case 1 when condition1 meets conditions then 1 else 0 end from demotable)
+ (Select case 1 when condition2 meets conditions then 1 else 0 end from demotable)
+ (Select case 1 when condition3 meets conditions then 1 else 0 end from demotable)
+ (Select case 1 when condition4 meets conditions then 1 else 0 end from demotable)
+ (Select case 1 when condition5 meets conditions then 1 else 0 end from demotable)> = 2