0b9686fc43
Replace the draft-only unique index with one covering both DRAFT and PENDING_APPROVAL statuses, ensuring a document can have at most one active version at a time. Deduplicate any existing data before creating the index, prioritizing PENDING_APPROVAL over DRAFT. Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>
39 lines
1.6 KiB
SQL
39 lines
1.6 KiB
SQL
-- Copyright (c) 2026 Probo Inc <hello@probo.inc>
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--
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-- Permission to use, copy, modify, and distribute this software for any
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-- purpose with or without fee is hereby granted, provided that the above
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-- copyright notice and this permission notice appear in all copies.
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--
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-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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-- ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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-- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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-- OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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-- The index constraint is already respected in Probo's production environment.
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-- The deletion is here in case duplicates were created directly via SQL in
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-- other contexts.
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DELETE FROM document_versions
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WHERE status IN ('DRAFT', 'PENDING_APPROVAL')
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AND document_id IN (
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SELECT document_id
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FROM document_versions
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WHERE status IN ('DRAFT', 'PENDING_APPROVAL')
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GROUP BY document_id
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HAVING COUNT(*) > 1
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)
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AND id NOT IN (
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SELECT DISTINCT ON (document_id) id
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FROM document_versions
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WHERE status IN ('DRAFT', 'PENDING_APPROVAL')
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ORDER BY document_id, CASE WHEN status = 'PENDING_APPROVAL' THEN 0 ELSE 1 END, created_at ASC
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);
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DROP INDEX document_one_draft_version_idx;
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CREATE UNIQUE INDEX document_one_active_version_idx
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ON document_versions (document_id)
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WHERE status IN ('DRAFT', 'PENDING_APPROVAL');
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