EXCEPTはクエリの結果から共通する行を排除します。{Query_ A} EXCEPT {Query_ B} ( EXCEPT …) のように記述し、Query_ Aの出力結果からQuery_ Bの出力結果と共通する行を排除して出力されます。 たとえば、INTERSECTと同様に1つのクエリがcolor = 'RED'、もう1つの結果がscore > 30 ...
Returns a collection of any distinct values that are returned by both the query expressions on the left and right sides of the INTERSECT operand. All expressions must be of the same type or of a ...
Returns a collection of any distinct values that are returned by both the query expressions on the left and right sides of the INTERSECT operand. All expressions must be of the same type or of a ...
It works similar like union clause as it is used to combine two SELECT statements, but it returns tuples only from first SELECT statement which are common to tuples in the second SELECT statement.