mysql case else

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MySQL operation query results case-then-else End usage example

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

MySQL operation query results case-then-else End usage example

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

In MySQL, case, then else end usage

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,

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 many instances _ MySQL

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

The use of case-then-else end in MYSQL

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---------

Multiple MySQL instances

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

MySQL in locate and case when ... Then ... ELSE ... End combined usage

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

The use of case-then-else end in MYSQL

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---

The use of case-then-else end in MYSQL

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---

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