repo: fix 500 error on watchers and stargazers pages using MSSQL (#6386)

Co-authored-by: Joe Chen <jc@unknwon.io>
Co-authored-by: Claude <noreply@anthropic.com>

CHANGELOG.md

@@ -22,6 +22,7 @@ All notable changes to Gogs are documented in this file.
 
 ### Fixed
 
+- 500 error on repository watchers and stargazers pages when using MSSQL. [#5482](https://github.com/gogs/gogs/issues/5482)
 - Submodules using `ssh://` protocol and a port number are not rendered correctly. [#4941](https://github.com/gogs/gogs/issues/4941)
 - Missing link to user profile on the first commit in commits history page. [#7404](https://github.com/gogs/gogs/issues/7404)
 - Unable to delete or display files with special characters in their names. [#7596](https://github.com/gogs/gogs/issues/7596)

internal/database/repo.go

@@ -2408,7 +2408,7 @@ func GetWatchers(repoID int64) ([]*Watch, error) {
 func (r *Repository) GetWatchers(page int) ([]*User, error) {
 	users := make([]*User, 0, ItemsPerPage)
 	sess := x.Limit(ItemsPerPage, (page-1)*ItemsPerPage).Where("watch.repo_id=?", r.ID)
-	if conf.UsePostgreSQL {
+	if conf.UsePostgreSQL || conf.UseMSSQL {
 		sess = sess.Join("LEFT", "watch", `"user".id=watch.user_id`)
 	} else {
 		sess = sess.Join("LEFT", "watch", "user.id=watch.user_id")
@@ -2508,7 +2508,7 @@ func IsStaring(userID, repoID int64) bool {
 func (r *Repository) GetStargazers(page int) ([]*User, error) {
 	users := make([]*User, 0, ItemsPerPage)
 	sess := x.Limit(ItemsPerPage, (page-1)*ItemsPerPage).Where("star.repo_id=?", r.ID)
-	if conf.UsePostgreSQL {
+	if conf.UsePostgreSQL || conf.UseMSSQL {
 		sess = sess.Join("LEFT", "star", `"user".id=star.uid`)
 	} else {
 		sess = sess.Join("LEFT", "star", "user.id=star.uid")