Add backfill for repository search score table

data/migrations/versions/c3d4b7ebcdf7_backfill_repositorysearchscore_table.py

@@ -0,0 +1,23 @@
+"""Backfill RepositorySearchScore table
+
+Revision ID: c3d4b7ebcdf7
+Revises: f30984525c86
+Create Date: 2017-04-13 12:01:59.572775
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = 'c3d4b7ebcdf7'
+down_revision = 'f30984525c86'
+
+from alembic import op
+import sqlalchemy as sa
+
+def upgrade(tables):
+    # Add a 0 entry into the RepositorySearchScore table for each repository that isn't present
+    conn = op.get_bind()
+    conn.execute("insert into repositorysearchscore (repository_id, score) SELECT id, 0 FROM " +
+                 "repository WHERE id not in (select repository_id from repositorysearchscore)")
+
+def downgrade(tables):
+    pass