Which Data Types Can Create Statistics?

Raul Gonzalez figures out which data types cannot be part of statistics:

Yeah, there you go, all these _WA_Sys_ stats tell me they have been automatically created (there is a flag in sys.stats if you don’t believe me) but I can see there are only 31, where I created 34 columns.

That’s funny, let’s see which data types did get statistics.

The results are pretty interesting.

Related Posts

Using Date Types In Warehouses

Koen Verbeeck argues that date keys in warehouses should be actual date types: The worst are by far the string representation, as there is no actual check on the contents. It can literally contain everything. And is ’01/02/2018′ the first of February 2018 (like any sane person would read, because days come before months), or […]

Read More

Appropriate Data Types And Unicode

Raul Gonzalez on (in)appropriate use of National character strings: Yes, you have read it… I see dates stored as NVARCHAR(10) and NCHAR(10) on daily basis, please don’t ask me why. This case is even worse, because DATE takes 3 bytes where NCHAR(10) takes 20 bytes, yes Ladies and Gentlemen more than 6 times more space […]

Read More

Categories

February 2017
MTWTFSS
« Jan Mar »
 12345
6789101112
13141516171819
20212223242526
2728