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mssql: Column is dropped and recreated in every migration #9399

@ertl

Description

@ertl

Issue Description

@column({ type: 'nvarchar', length: 'max' })
value: string;

this code leads to a recreation of the column for every migration.

Expected Behavior

no recreation of the column

Actual Behavior

  • This Code produces the wrong migration output. (Column is dropped an added)

    @column({ type: 'nvarchar', length: 'max' })
    value: string;

  • This Code produces the correct output

    @column({ type: 'nvarchar', length: 'MAX' })
    value: string;

My Environment

Dependency Version
Operating System windows
Node.js version 16.16.0
Typescript version 4.7.2
TypeORM version 0.3.10

Additional Context

Relevant Database Driver(s)

DB Type Reproducible
aurora-mysql no
aurora-postgres no
better-sqlite3 no
cockroachdb no
cordova no
expo no
mongodb no
mysql no
nativescript no
oracle no
postgres no
react-native no
sap no
spanner no
sqlite no
sqlite-abstract no
sqljs no
sqlserver yes

Are you willing to resolve this issue by submitting a Pull Request?

  • ✖️ Yes, I have the time, and I know how to start.
  • ✖️ Yes, I have the time, but I don't know how to start. I would need guidance.
  • ✖️ No, I don’t have the time, but I can support (using donations) development.
  • ✅ No, I don’t have the time and I’m okay to wait for the community / maintainers to resolve this issue.

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