diff --git a/synapse/storage/background_updates.py b/synapse/storage/background_updates.py
index d4cf0fc59b..12a8b8259c 100644
--- a/synapse/storage/background_updates.py
+++ b/synapse/storage/background_updates.py
@@ -210,7 +210,8 @@ class BackgroundUpdateStore(SQLBaseStore):
self._background_update_handlers[update_name] = update_handler
def register_background_index_update(self, update_name, index_name,
- table, columns, where_clause=None):
+ table, columns, where_clause=None,
+ unique=False):
"""Helper for store classes to do a background index addition
To use:
@@ -245,9 +246,11 @@ class BackgroundUpdateStore(SQLBaseStore):
c.execute(sql)
sql = (
- "CREATE INDEX CONCURRENTLY %(name)s ON %(table)s"
+ "CREATE %(unique)s INDEX CONCURRENTLY %(name)s"
+ " ON %(table)s"
" (%(columns)s) %(where_clause)s"
) % {
+ "unique": "UNIQUE" if unique else "",
"name": index_name,
"table": table,
"columns": ", ".join(columns),
@@ -270,9 +273,10 @@ class BackgroundUpdateStore(SQLBaseStore):
# down at the wrong moment - hance we use IF NOT EXISTS. (SQLite
# has supported CREATE TABLE|INDEX IF NOT EXISTS since 3.3.0.)
sql = (
- "CREATE INDEX IF NOT EXISTS %(name)s ON %(table)s"
+ "CREATE %(unique)s INDEX IF NOT EXISTS %(name)s ON %(table)s"
" (%(columns)s)"
) % {
+ "unique": "UNIQUE" if unique else "",
"name": index_name,
"table": table,
"columns": ", ".join(columns),
|
