SQL UNION VS UNION ALL interview questions and answers || Learn SQL easy way

In this Video we will learn about the UNION and UNION ALL , and how we get result sets.
--UNION & UNION ALL
--ALWAYS USED ON MORE THAN 1 SELECT QUERY (MIN 2 QYERY)
--SAME NUMBER COLUMN AND SAME DATA TYPE IN BOTH SELECT
--IT MERGES DATA AND EXCLUDE DUPLICATE(UNION) ,INCLUDE THE DUPLICATE(UNION ALL)
For UNION use below select queries to understand:
SELECT 'X' FCOL
UNION
SELECT 'X' SCOL
UNION
SELECT 'Z' TCOL
For UNION ALL use below select queries to understand:
SELECT 'X' FCOL
UNION ALL
SELECT 'X' SCOL
UNION ALL
SELECT 'Z' TCOL
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[@shashidevi133]

One of the Best Explanation i see , Thank You 😌