T-SQL UNION - vanishing records

Hi,

I thought I've seen it all :)  Now I'm convinced there are gremlins running around in my trusted SQL.

I run two views without a UNIION clause and get 5 and 11 records respectively (total 16).  I run the UNION between the views and get 14 records.  I was missing 1 record from each view.

I'm scratching my head.

Thanks for any insight into this command.

Todd

UNION.jpg
No-UNION.jpg
Todd_FieldsAsked:
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Rajkumar GsSoftware EngineerCommented:
Change UNION to UNION ALL

Raj
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chapmandewCommented:
UNION ALL

UNION combines records.  UNION ALL will produce your duplicates.
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Todd_FieldsAuthor Commented:
Bingo ...

I've never seen that case.  I'm wiser for your sharing this.

Regards.
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chapmandewCommented:
You're welcome.  Also check out the EXCEPT and INTERSECT TSQL operators...more fun stuff.
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Rajkumar GsSoftware EngineerCommented:
:)

Raj
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