Sometimes there is a need to combine data from multiple tables or views into one comprehensive dataset. This may be for like tables within the same database or maybe there is a need to combine like data across databases or even across servers. I have read about the UNION and UNION ALL commands, but how do these work and how do they differ?
2019-12-05
2018-06-12
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2016-11-15
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2016-05-31
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The use of union would seem to force a distinct in each of the select statements being unioned. The use multiple unions, with mixed union and union all clauses, seems to cause haphazard results.
2013-05-14 (first published: 2013-04-30)
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By Will Assaf
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Comments posted to this topic are about the item The Backup File Extension
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I run this command in SQL Server 2022. What is the extension of the backup file?
BACKUP DATABASE HerdofTwo TO DISK = 'HerdOfTwo_20240501'See possible answers