[#6372] Fixed nullable constraint bug for columns during auto migration

[wookie0]

• Do only one thing
• Non breaking API changes
• Tested

What did this pull request do?

Fix nullable constraint bug for columns during auto migration.

• issue
  • When i only modify the column type to allow null, AutoMigrate does not work. #6372
  • Automigration NOT NULL to DEFAULT NULL not working #5643
• comment : When i only modify the column type to allow null, AutoMigrate does not work. #6372 (comment)

User Case Description

TBD.

[a631807682]

Can you add some tests?

[daheige]

Good!

[wookie0]

@a631807682 @daheige
I did add test case in the previous built test function.
But some checks were not successful, I saw the CI log. But I can't find what problem is. I think test code I added is not cause. any help??

+) Also, test failed in master branch at local env.

[a631807682]

@a631807682 @daheige I did add test case in the previous built test function. But some checks were not successful, I saw the CI log. But I can't find what problem is. I think test code I added is not cause. any help??

+) Also, test failed in master branch at local env.

Fixed by go-gorm/sqlserver#134

Upgrade gorm.io/driver/sqlserver to v1.5.4

[wookie0]

@a631807682
Nice! Everything works perfectly.
Thanks!!