14 lines
516 B
SQL
14 lines
516 B
SQL
ALTER TABLE channel_members
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ADD COLUMN history_clear_anchor_id integer DEFAULT 0 NOT NULL,
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ADD COLUMN history_clear_anchor_date integer DEFAULT 0 NOT NULL,
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ADD CONSTRAINT channel_members_history_clear_anchor_check CHECK (
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(
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history_clear_anchor_id = 0
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AND history_clear_anchor_date = 0
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)
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OR (
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history_clear_anchor_id > 0
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AND history_clear_anchor_date > 0
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AND history_clear_anchor_id <= available_min_id
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)
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);
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