I vaguely remember using a case clause in a select statement in a former occupation, but now that I am using mysql (with php) I am encountering my first need for it and don't know if I can do what I want. I need to add a sequencing field to my query results based upon whether ...
The CASE statement will execute the ELSE clause if none of the WHEN clauses were executed. Example Let's look at an example that shows how to use the CASE statement in MySQL. First, we'll look at the first syntax for the CASE statement. For example: ...
如果条件1得到满足,那么我想返回整个数据w.r.t orderstatus,但是如果条件得到满足,那么我只想要orderstatus为“completed”或“cancelled”的记录,但这是一个问题。我可以直接使用“in”,但不能与“case”语句一起使用。谢谢,拉胡尔 mysqlwildcardwhere-clausecase-statement 来源:https://stackoverflow.com/questions/...
You can use the CASE expression anywhere in a query, like SELECT, WHERE, or ORDER BY clause. Note. Note that MySQL CASE Expressions are different from MySQL CASE Statements. MySQL CASE Statements are only used in Stored Procedures, Functions, Events, and Triggers, whereas MySQL CASE ...
我可以直接使用“in”,但不能与“case”语句一起使用。谢谢,拉胡尔 mysqlwildcardwhere-clausecase-statement 来源:https://stackoverflow.com/questions/53685157/how-to-use-in-with-case-statement-in-where-clause 关注 举报1条答案按热度按时间 2g32fytz1# SELECT ordermaster CASE WHEN OrderStatus = 1 ...
If you don’t specify the ELSE clause and no condition is TRUE, MySQL will issue an error message. MySQL does not allow you to have empty commands in the THEN or ELSE clause. If you don’t want to handle the logic in the ELSE clause while preventing MySQL raise an error, you can ...
If the ELSE clause is omitted and noconditionis found to be true, then the CASE statement will return NULL. Applies To The CASE function can be used in the following versions of MySQL: MySQL 5.7, MySQL 5.6, MySQL 5.5, MySQL 5.1, MySQL 5.0, MySQL 4.1, MySQL 4.0, MySQL 3.23.3 ...
If no conditions are true, it will return the value in the ELSE clause. If there is no ELSE part and no conditions are true, it returns NULL. Syntax CASE WHENcondition1THENresult1 WHENcondition2THENresult2 WHENconditionNTHENresultN
2) Case:a) If the value of the <search condition> of some <searched when clause> in a <...
But I think problem is still in syntax or use of CASE clause. But hey, I could be wrong :)! I have no idea what could be going on here, so if any of you MySQL jedis could lend me some of your force and show me the path, I would be really grateful!