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mirror of https://github.com/go-gitea/gitea.git synced 2026-06-17 07:31:40 +02:00
Lunny Xiao 0be7543560
fix(mssql): expand legacy issue and comment long-text columns (#38120)
## Summary

This fixes pull request creation failures on upgraded MSSQL instances
where legacy `issue` and `comment` long-text columns are still limited
to `nvarchar(4000)`.

When a PR is created, Gitea stores a pull request push timeline comment
containing JSON with `commit_ids`. For PRs with many commits, that
payload can exceed 4000 characters and MSSQL rejects the insert with:

> String or binary data would be truncated in table 'comment', column
'content'

This change adds a migration that expands the affected legacy MSSQL
columns to `NVARCHAR(MAX)`.

The previous migration in models/migrations/v1_16/v191.go only applies
to MySQL, not MSSQL.

migration now skips columns already using NVARCHAR(MAX) / VARCHAR(MAX)

Closes #37893

## Changes

- add migration `338` for MSSQL-only long-text expansion
- expand:
  - `issue.content`
  - `comment.content`
  - `comment.patch`
- add an MSSQL regression test that starts from a legacy `VARCHAR(4000)`
schema and verifies inserts larger than 4000 characters succeed after
migration

## Why this approach

The current model already declares these fields as `LONGTEXT`, so the
bug is caused by stale upgraded MSSQL schemas rather than by PR creation
logic itself. Fixing the schema is the smallest and safest change, and
also prevents similar truncation issues for other long issue/comment
content.
2026-06-16 17:40:13 +00:00
2026-06-12 08:36:05 +08:00
2026-05-22 20:22:04 +00:00
2026-05-22 20:22:04 +00:00
DCO
2026-04-26 11:46:48 +02:00
2026-04-14 23:24:44 +08:00
2026-06-12 08:36:05 +08:00

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