8 lines
370 B
SQL
8 lines
370 B
SQL
-- Every account owns exactly one built-in full-screen gift-effect component.
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-- Existing accounts are backfilled from the validated Rust defaults during
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-- startup; the partial index keeps concurrent starts idempotent.
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CREATE UNIQUE INDEX IF NOT EXISTS component_instances_single_gift_effect
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ON component_instances(owner_user_id, kind)
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WHERE kind = 'gift_effect';
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