Fix MSSQL tests

[Tigrov]

Related PRs

• Fix tests db-mssql#323
• Fix MSSQL tests active-record#389

Q	A
Is bugfix?	❌
New feature?	❌
Breaks BC?	❌
Fixed issues	-

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.34%. Comparing base (42e1168) to head (6537ea4).
Report is 1 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (42e1168) and HEAD (6537ea4). Click for more details.

HEAD has 21 uploads less than BASE

Flag	BASE (42e1168)	HEAD (6537ea4)
	25	4

Additional details and impacted files

@@              Coverage Diff              @@
##             master     #886       +/-   ##
=============================================
- Coverage     99.56%   87.34%   -12.22%     
  Complexity     1486     1486               
=============================================
  Files            80       80               
  Lines          3699     3699               
=============================================
- Hits           3683     3231      -452     
- Misses           16      468      +452     

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