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Backend/db/migrations/008_assignment_pass_threshold.sql

@@ -0,0 +1,22 @@
+-- +goose Up
+
+ALTER TABLE assignments
+    ADD COLUMN pass_threshold NUMERIC(5,2) NOT NULL DEFAULT 8.00,
+    ADD CONSTRAINT assignments_pass_threshold_range_check
+        CHECK (pass_threshold >= 0 AND pass_threshold <= 10);
+
+UPDATE assignments a
+SET pass_threshold = COALESCE(
+    (
+        SELECT MAX(aa.pass_threshold)
+        FROM assignment_assignees aa
+        WHERE aa.assignment_id = a.id
+    ),
+    8.00
+);
+
+-- +goose Down
+
+ALTER TABLE assignments
+    DROP CONSTRAINT IF EXISTS assignments_pass_threshold_range_check,
+    DROP COLUMN IF EXISTS pass_threshold;