Why does the order of the SELECT statements in the UNION affect the result?This first SQL produces the result I want.SELECT cat_id AS catid, manufacturer AS mfr, model, a_class_id as class_id FROM ...

-- 4. Second Way Using Union All - Will give Duplicates, hence will have to handle it with a condition ...

#1. Performing inner join, Left join, and Right join on the tables. #2. Listing all distinct country names from both the Country and Persons tables. select Country_name from Country UNION select ...

In mysql union operator used to combine the result of multiple select statements. when we apply the union operator then it selects only distinct values by default (no duplicate values are ...