1.CASE 写法如下: CASE WHEN condition1 THEN result1 WHEN condition2 THEN result2 WHEN conditionN THEN resultN ELSE result END; 解释:1)先匹配第一条,不匹配的话继续第二条,如此循环,
sql case statement
We can add as manyWHEN ... THENconditions as required in theCASEstatement. For example, -- multiple CASE conditions in SQLSELECTcustomer_id, first_name,CASEWHENcountry ='USA'THEN'United States of America'WHENcountry ='UK'THEN'United Kingdom'ENDAScountry_nameFROMCustomers; Run Code Here, the...
The simple CASE statement has the following structure: CASE selector WHEN selector_value_1 THEN statements_1 WHEN selector_value_1 THEN statement_2 ... ELSE else_statements END CASE; Code language: PostgreSQL SQL dialect and PL/pgSQL (pgsql) Let’s examine the syntax of the simple CASE ...
Solved: Hi , Currently I am looking into open sql statement in abap for hana I wrote the below query but in debugging the values are populated as below SELECT carrid ,
CASE表达式是用来判断条件的,条件成立时返回某个值,条件不成立时返回另一个值。 语法: CASEWHENComparsionConditionTHENresultWHENComparsionConditionTHENresultELSEotherEND (注:各分支返回的数据类型需一致。) (注:when子句一定要有排他性,因为当when子句为真时,剩余的when子句会被忽略。) ...
CREATE/ALTER PROCEDURE' must be the first statement in a query batch. Create/Alter view with declare variable Created a new column in a select statement .How to use that column name in CASE statement in the same select staetment Creating a blank text file using SQL code? Creating a file ...
For example, consider the table student_details. To select the first name of all the students the query would be like: SELECT first_name FROM student_details; SELECT Statements: SyntaxNOTE: SQL commands are not case sensitive. The above SELECT statement can also be written as"select first_...
’ After that, using the ‘Created Date’ column you can set the date span (or build yourWHEREclause) to be everything after 2017-08-01. This will effectively build everything we need in an underlying query to create theCASE STATEMENTwe did above, in Atlassian Analytics’s Data Pipeline....
搜索型 CASE 语句使用一个或多个布尔表达式来确定所要执行的语句。 语法 CASEWHENboolean-expressionTHENstatementsELSEstatementsEND CASE 描述 CASE 此关键字引入 CASE 语句中的第一个 WHEN 子句。 WHEN 布尔表达式 指定一个表达式,当控制流进入定义此表达式的 WHEN 子句时,将对此表达式进行求值。 如果 布尔表达式 ...