Example
When results need to have some logic applied 'on the fly' one can use CASE statement to implement it.
SELECT CASE WHEN Col1 < 50 THEN 'under' ELSE 'over' END threshold
FROM TableName
also can be chained
SELECT
CASE WHEN Col1 < 50 THEN 'under'
WHEN Col1 > 50 AND Col1 <100 THEN 'between'
ELSE 'over'
END threshold
FROM TableName
one also can have CASE inside another CASE statement
SELECT
CASE WHEN Col1 < 50 THEN 'under'
ELSE
CASE WHEN Col1 > 50 AND Col1 <100 THEN Col1
ELSE 'over' END
END threshold
FROM TableName
