Store federation stream positions in the database

1 files changed, 14 insertions, 4 deletions

diff --git a/synapse/storage/_base.py b/synapse/storage/_base.py
index d828d6ee1d..d3686b9690 100644
--- a/synapse/storage/_base.py
+++ b/synapse/storage/_base.py
@@ -561,12 +561,17 @@ class SQLBaseStore(object):
 
     @staticmethod
     def _simple_select_onecol_txn(txn, table, keyvalues, retcol):
+        if keyvalues:
+            where = " WHERE %s" % " AND ".join("%s = ?" % k for k in keyvalues.keys())
+        else:
+            where = ""
+
         sql = (
-            "SELECT %(retcol)s FROM %(table)s WHERE %(where)s"
+            "SELECT %(retcol)s FROM %(table)s %(where)s"
         ) % {
             "retcol": retcol,
             "table": table,
-            "where": " AND ".join("%s = ?" % k for k in keyvalues.keys()),
+            "where": where,
         }
 
         txn.execute(sql, keyvalues.values())
@@ -744,10 +749,15 @@ class SQLBaseStore(object):
 
     @staticmethod
     def _simple_update_one_txn(txn, table, keyvalues, updatevalues):
-        update_sql = "UPDATE %s SET %s WHERE %s" % (
+        if keyvalues:
+            where = " WHERE %s" % " AND ".join("%s = ?" % k for k in keyvalues.keys())
+        else:
+            where = ""
+
+        update_sql = "UPDATE %s SET %s %s" % (
             table,
             ", ".join("%s = ?" % (k,) for k in updatevalues),
-            " AND ".join("%s = ?" % (k,) for k in keyvalues)
+            where,
         )
 
         txn.execute(