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TIL New SQL Operators - Except, UNION, Distinct
EXCEPToperator returns distinct rows from the first (left) query that are not in the output of the second (right) query
Eg: select * from table1
select * from table 2
Returns all elements in table1 not present in table2
UNION and Intersect Operator
In case of two queries in two tables. The Union and Intersect operator does the union and intersection of two sets.
In case of distinct operator, it returns all the unique values corresponding to a query value we want.
SELECT DISTINCT(status) FROM employee;