Answers for "if statements sql"

how to do an if statement in sql server

DECLARE @Course_ID INT = 4

IF (@Course_ID = 4)
Select * from Guru99 where Tutorial_ID = 4
ELSE
Select * from Guru99 where Tutorial_ID != 4

SQL IF ELSE

SELECT CASE             
            WHEN A + B > C AND B + C > A AND A + C > B THEN
                CASE 
                    WHEN A = B AND B = C THEN 'Equilateral'
                    WHEN A = B OR B = C OR A = C THEN 'Isosceles'
                    ELSE 'Scalene'
                END
            ELSE 'Not A Triangle'
        END
FROM TRIANGLES;