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phorge-phorge/resources/sql/patches/20131004.dxedgekey.sql
epriestley bd8071bb33 Add a (dst, type, src) key to Differential's edge table
Summary:
Ref T1279. This came to me in a dream.

The existing `differential_relationship` table has an `(objectPHID, type)` column, which theoretically is useful for queries like "revisions with X as a reviewer". In practice, I'm not sure it gets used much, but I can get it to show up in at least some query plans.

Add a similar index to the `edge` table. This sequences //before// D7227, which actually migrates the data.

Test Plan:
  - Ran `bin/storage upgrade`.
  - EXPLAIN'd a bunch of queries against different versions of the schema, this seemed helpful overall.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T1279

Differential Revision: https://secure.phabricator.com/D7232

Conflicts:
	src/infrastructure/storage/patch/PhabricatorBuiltinPatchList.php
2013-10-05 13:53:43 -07:00

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88 B
SQL

ALTER TABLE {$NAMESPACE}_differential.edge
ADD UNIQUE KEY `key_dst` (dst, type, src);