unique quiz constraint

2026-10-16 15:23:06 +05:30
parent b1f78b1655
commit eb02d08f14
6 changed files with 128 additions and 6 deletions
@@ -0,0 +1 @@
+DROP INDEX IF EXISTS quizzes_one_per_target;
@@ -0,0 +1,6 @@
+-- One quiz per piece of content. A chapter, lecture or conversation may carry
+-- at most one live quiz; stand-alone quizzes (no path) are unlimited, and a
+-- deleted quiz frees its link for a new one.
+CREATE UNIQUE INDEX IF NOT EXISTS quizzes_one_per_target
+    ON quizzes (target_path)
+    WHERE deleted_at IS NULL AND target_path IS NOT NULL;
				`@@ -0,0 +1 @@`
				`DROP INDEX IF EXISTS quizzes_one_per_target;`