ENH: Add index to root_symbol column of futures_contracts

2026-07-05 08:12:07 +08:00 · 2015-10-08 14:51:42 -04:00
parent 2e85e08768
commit 69b734129f
1 changed files with 1 additions and 0 deletions
@@ -346,6 +346,7 @@ class AssetDBWriter(with_metaclass(ABCMeta)):
                'root_symbol',
                sa.Text,
                sa.ForeignKey(self.futures_root_symbols.c.root_symbol),
+                index=True
            ),
            sa.Column('asset_name', sa.Text),
            sa.Column('start_date', sa.Integer, default=0, nullable=False),