Add Num{Issues,Pulls} stats checks (#21404) (#21414)

Backport #21404

Currently `repository.Num{Issues,Pulls}` weren't checked and could
become out-of-consistency. Adds these two checks to `CheckRepoStats`.

Fix incorrect SQL query for `repository.NumClosedPulls`, the check
should be for `repo_num_pulls`.

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

models/repo.go

@@ -605,15 +605,27 @@ func CheckRepoStats(ctx context.Context) error {
 			repoStatsCorrectNumStars,
 			"repository count 'num_stars'",
 		},
+		// Repository.NumIssues
+		{
+			statsQuery("SELECT repo.id FROM `repository` repo WHERE repo.num_issues!=(SELECT COUNT(*) FROM `issue` WHERE repo_id=repo.id AND is_closed=? AND is_pull=?)", false, false),
+			repoStatsCorrectNumIssues,
+			"repository count 'num_issues'",
+		},
 		// Repository.NumClosedIssues
 		{
 			statsQuery("SELECT repo.id FROM `repository` repo WHERE repo.num_closed_issues!=(SELECT COUNT(*) FROM `issue` WHERE repo_id=repo.id AND is_closed=? AND is_pull=?)", true, false),
 			repoStatsCorrectNumClosedIssues,
 			"repository count 'num_closed_issues'",
 		},
+		// Repository.NumPulls
+		{
+			statsQuery("SELECT repo.id FROM `repository` repo WHERE repo.num_pulls!=(SELECT COUNT(*) FROM `issue` WHERE repo_id=repo.id AND is_closed=? AND is_pull=?)", false, true),
+			repoStatsCorrectNumPulls,
+			"repository count 'num_pulls'",
+		},
 		// Repository.NumClosedPulls
 		{
-			statsQuery("SELECT repo.id FROM `repository` repo WHERE repo.num_closed_issues!=(SELECT COUNT(*) FROM `issue` WHERE repo_id=repo.id AND is_closed=? AND is_pull=?)", true, true),
+			statsQuery("SELECT repo.id FROM `repository` repo WHERE repo.num_closed_pulls!=(SELECT COUNT(*) FROM `issue` WHERE repo_id=repo.id AND is_closed=? AND is_pull=?)", true, true),
 			repoStatsCorrectNumClosedPulls,
 			"repository count 'num_closed_pulls'",
 		},