Yared Yemane
33d34f0dd2
Seed A1-A2, B1-B2, and C1-C2 only on their matching programs; add migration 000050 for existing databases. Document mapping in domain. Made-with: Cursor
46 lines
1.2 KiB
SQL
46 lines
1.2 KiB
SQL
-- Align default seeded courses with program: Beginner→A1,A2; Intermediate→B1,B2; Advanced→C1,C2.
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-- Only touches rows with the system seed description; custom courses are unchanged.
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-- Removing a course cascades to modules, lessons, and related LMS progress (see FKs on those tables).
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DELETE FROM courses AS c
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USING programs AS p
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WHERE c.program_id = p.id
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AND c.description = 'Default CEFR level course (system seed).'
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AND (
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(
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p.name = 'Beginner'
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AND c.name IN ('B1', 'B2', 'C1', 'C2')
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)
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OR (
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p.name = 'Intermediate'
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AND c.name IN ('A1', 'A2', 'C1', 'C2')
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)
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OR (
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p.name = 'Advanced'
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AND c.name IN ('A1', 'A2', 'B1', 'B2')
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)
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);
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INSERT INTO courses (program_id, name, description, thumbnail)
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SELECT
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p.id,
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v.name,
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'Default CEFR level course (system seed).',
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NULL
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FROM programs AS p
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INNER JOIN (
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VALUES
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('Beginner', 'A1'),
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('Beginner', 'A2'),
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('Intermediate', 'B1'),
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('Intermediate', 'B2'),
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('Advanced', 'C1'),
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('Advanced', 'C2')
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) AS v (program_name, name)
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ON p.name = v.program_name
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WHERE
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NOT EXISTS (
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SELECT 1 FROM courses AS e
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WHERE e.program_id = p.id AND e.name = v.name
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);
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