Change PK and add index order

google · Sep 21, 2018 · c27e1d5 · c27e1d5
1 parent 39e36d6
commit c27e1d5
Showing 1 changed file with 2 additions and 3 deletions.
diff --git a/storage/postgres/storage.sql b/storage/postgres/storage.sql
@@ -60,12 +60,11 @@ CREATE TABLE IF NOT EXISTS tree_head(
   root_hash              BYTEA NOT NULL,
   root_signature         BYTEA NOT NULL,
   tree_revision          BIGINT,
-  PRIMARY KEY(tree_id, tree_head_timestamp),
+  PRIMARY KEY(tree_id, tree_revision),
   FOREIGN KEY(tree_id) REFERENCES trees(tree_id) ON DELETE CASCADE
 );
 
-CREATE UNIQUE INDEX TreeHeadRevisionIdx
-  ON tree_head(tree_id, tree_revision);
+CREATE UNIQUE INDEX TreeHeadRevisionIdx ON tree_head(tree_id, tree_revision DESC);
 
 -- ---------------------------------------------
 -- Log specific stuff here