UNION ALL Statement in SQL Server
In this video we will learn about how to use UNION ALL in SQL Server and some key points like -
UNION ALL operator allows duplicate values .
All select statement within UNION ALL must have the same number of columns
The columns must also have similar data types
The columns in each SELECT statement must also be in the same order
Difference between UNION and UNION ALL
Must watch UNION Operator - • Union In SQL Server
You can also read the post on website -https://sqlskull.com/2019/12/08/union...
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