mysql case else

Case has two formats. Simple case function and case search function.--Simple Case functionCase SexWhen ' 1 ' Then ' men 'When ' 2 ' then ' women 'Else ' other ' END--case search functioncase If sex = ' 1 ' Then ' man 'When sex = ' 2 ' Then ' women

Case has two formats. Simple case function and case search function.--Simple Case functionCase SexWhen ' 1 ' Then ' men 'When ' 2 ' then ' women 'Else ' other ' END--case search functioncase If sex = ' 1 ' Then ' man 'When sex = ' 2 ' Then ' women

Conditional statementsdelimiter \\CREATE PROCEDURE proc_if ()BEGIN      declare i int default 0;   if i = 1 THEN       SELECT 1;   ELSEIF i = 2 THEN       SELECT 2;   ELSE       SELECT 7;   END IF;END\\delimiter ;Looping statementsWhile

Use LOCATE and case when... THEN... ELSE... END in mysql in combination, In the previous project, you need to write an SQL statement to find out A survey details. Select answer A, Answer B, and answer C... f. The number of people in the answer is

MySQL builds a series of multiple instances. The so-called multi-instance is to build and run multiple MySQL instances on one server. each instance uses different service ports and listens through different sockets. physically, each instance has an

Easy to understand, directly on the example:SELECTCase-------------ifWhen sex= ' 1 ' Then ' Men '-------------sex= ' 1 ', then return value ' Male 'When sex= ' 2 ' Then ' Women '-------------sex= ' 2 ', then the return value ' female 'else 0---------

MySQL builds a series of multiple instances. The so-called multi-instance is to build and run multiple MySQL instances on one server. Each instance uses different service ports and listens through different sockets. Physically, each instance has an

Before the project needs to write a SQL, is to find out a research details, choose a answer, b answer, c answer ... f The answer to how many people each, this SQL is also a great effort to write, it is written down, convenient for later use.Among

Explain:SELECTCase-------------IfWhen the sex= ' 1 ' then ' Male '-------------sex= ' 1 ', the return value ' male 'When the sex= ' 2 ' then ' female '-------------sex= ' 2 ', the return value ' female 'else 0 return ' other '-------------otherEnd---

Explain:SELECTCase-------------IfWhen the sex= ' 1 ' then ' Male '-------------sex= ' 1 ', the return value ' male 'When the sex= ' 2 ' then ' female '-------------sex= ' 2 ', the return value ' female 'else 0 return ' other '-------------otherEnd---