* Handle MSSQL constraints

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Update models/migrations/v145.go

* Prevent hang with Sync2

* Agh it's uniques not indexes

* Let us try a different way of finding constraints on the language column

Signed-off-by: Andrew Thornton <art27@cantab.net>

* minor simplification

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Try drop index instead?

Signed-off-by: Andrew Thornton <art27@cantab.net>

Signed-off-by: Andrew Thornton <art27@cantab.net>

In #12379 it was discovered that enry v2 has a maximum language length
of 34 characters which is larger than the 30 previously provided.

This PR updates the language column to 50.

Fix #12379