mirror of
https://github.com/overleaf/overleaf.git
synced 2024-12-25 19:42:27 +00:00
41 lines
1.1 KiB
JavaScript
41 lines
1.1 KiB
JavaScript
exports.config = {
|
|
// CREATE INDEX CONCURRENTLY can't be run inside a transaction
|
|
// If this migration fails in the middle, indexes and constraints will have
|
|
// to be cleaned up manually.
|
|
transaction: false,
|
|
}
|
|
|
|
exports.up = async function (knex) {
|
|
await knex.raw(`
|
|
ALTER TABLE chunks
|
|
ADD CONSTRAINT chunks_start_version_non_negative
|
|
CHECK (start_version IS NOT NULL AND start_version >= 0)
|
|
NOT VALID
|
|
`)
|
|
await knex.raw(`
|
|
ALTER TABLE chunks
|
|
VALIDATE CONSTRAINT chunks_start_version_non_negative
|
|
`)
|
|
await knex.raw(`
|
|
CREATE UNIQUE INDEX CONCURRENTLY index_chunks_on_doc_id_and_start_version
|
|
ON chunks (doc_id, start_version)
|
|
`)
|
|
await knex.raw(`
|
|
ALTER TABLE chunks
|
|
ADD UNIQUE USING INDEX index_chunks_on_doc_id_and_start_version
|
|
`)
|
|
}
|
|
|
|
exports.down = async function (knex) {
|
|
await knex.raw(`
|
|
ALTER TABLE chunks
|
|
DROP CONSTRAINT IF EXISTS index_chunks_on_doc_id_and_start_version
|
|
`)
|
|
await knex.raw(`
|
|
DROP INDEX IF EXISTS index_chunks_on_doc_id_and_start_version
|
|
`)
|
|
await knex.raw(`
|
|
ALTER TABLE chunks
|
|
DROP CONSTRAINT IF EXISTS chunks_start_version_non_negative
|
|
`)
|
|
}
|