10 lines
414 B
SQL
10 lines
414 B
SQL
-- Add table for announcement-cohort relationship
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CREATE TABLE IF NOT EXISTS announcement_cohorts (
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announcement_id UUID NOT NULL REFERENCES course_announcements(id) ON DELETE CASCADE,
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cohort_id UUID NOT NULL REFERENCES cohorts(id) ON DELETE CASCADE,
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PRIMARY KEY (announcement_id, cohort_id)
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);
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-- Index for performance
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CREATE INDEX idx_announcement_cohorts_cohort ON announcement_cohorts(cohort_id);
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