sql case
-- NOTE: this is for SQL-Oracle specifically
/*
NB: Please like Mingles444 post, I derived this from him/her
*/
-- syntax: (Retrieved from grepper:Mingles444)
CASE
WHEN condition1 THEN result1
WHEN condition2 THEN result2
WHEN conditionN THEN resultN
ELSE result
END
-- example:
SELECT
CASE
WHEN (1+6 = 6) THEN 'A'
WHEN (1+6 = 7) THEN 'B'
WHEN (1+6 = 8) THEN 'C'
ELSE 'D'
END
FROM DUAL;
-- OUTPUT: Bsql if else in select
-- In a query (DUAL is for Oracle)
SELECT CASE lower(my_col)
WHEN 'agree' THEN 'Ok'
WHEN 'maybe' THEN 'Wait'
ELSE 'Ko'
END AS my_result
FROM DUAL;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;Copyright © 2021 Codeinu
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