WebThe THEN clause can contain a single or multiple statements, or a nested PL/SQL block. Here is an example of a basic IF/THEN statement with a THEN clause. if v_numb > 5 then v_numb := 5; v_other := 10; end if; In the statements above, the Boolean condition ( v_numb > 5) must be true before the THEN clause is executed. WebMay 30, 2013 · SQL Server usually does short-circuit evaluation for CASE statements ( SQLFiddle ): --Does not fail on the divide by zero. SELECT CASE WHEN 1/1 = 1 THEN 'Case 1' WHEN 2/0 = 1 THEN 'Case 2' END; --Fails on the divide by zero. SELECT CASE WHEN 1/1 = 99 THEN 'Case 1' WHEN 2/0 = 99 THEN 'Case 2' END;
sql - CASE WHEN ... THEN - Stack Overflow
WebEND AS output FROM educba_articles WHERE ` status` = "Submitted" ; The output of the execution of the above query statement is as follows – Conclusion – SQL if then else We can use IF and ELSE keywords in SQL to perform conditional execution of the statements depending on the condition evaluating to a boolean value. WebAs for the dates, quoting a date and then following it with a d converts the date to a SAS date, namely the number of days since January 1, 1960. case statements, by definition, … twin mattress box spring set
SQL Server CASE Statement Example - mssqltips.com
WebMar 13, 2024 · 我可以回答这个问题。第一个问题是一个sql查询语句，包括select、from、where、group by和order by。第二个问题是一个sql查询语句，其中包括一个case语句和一些别名。 WebFeb 11, 2024 · USE TestDB GO SELECT CAST(StartTime AS Date) AS [Date], SUM(CASE WHEN u.Gender='M' THEN 1 ELSE 0 END) AS NumberOfMaleUsersPerDay, SUM(CASE WHEN u.Gender='F' THEN 1 ELSE 0 END) AS NumberOfFemaleUsersPerDay FROM [Session] s INNER JOIN [User] u ON u.UserID=s.UserID GROUP BY CAST(StartTime AS Date) ORDER … twin mattress best rated