Boost Azure Demo

Backend/db/migrations/014_assignment_student_questions.sql

@@ -0,0 +1,30 @@
+-- +goose Up
+
+CREATE TABLE assignment_student_questions (
+    id BIGSERIAL PRIMARY KEY,
+    assignment_id BIGINT NOT NULL,
+    student_id BIGINT NOT NULL,
+    question_id BIGINT NOT NULL REFERENCES questions(id) ON DELETE CASCADE,
+    position INTEGER NOT NULL CHECK (position > 0),
+    source_bucket TEXT NOT NULL CHECK (btrim(source_bucket) <> ''),
+    source_topic question_topic,
+    source_difficulty question_difficulty,
+    generator_seed BIGINT,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    CONSTRAINT assignment_student_questions_assignment_student_fkey
+        FOREIGN KEY (assignment_id, student_id)
+        REFERENCES assignment_assignees(assignment_id, student_id)
+        ON DELETE CASCADE,
+    CONSTRAINT assignment_student_questions_assignment_student_question_key
+        UNIQUE (assignment_id, student_id, question_id),
+    CONSTRAINT assignment_student_questions_assignment_student_position_key
+        UNIQUE (assignment_id, student_id, position)
+);
+
+CREATE INDEX idx_assignment_student_questions_assignment_student
+    ON assignment_student_questions (assignment_id, student_id);
+
+-- +goose Down
+
+DROP INDEX IF EXISTS idx_assignment_student_questions_assignment_student;
+DROP TABLE IF EXISTS assignment_student_questions;