add index to open time

StoicPerlman · Jun 23, 2018 · ab15313 · ab15313
1 parent e774039
commit ab15313
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/binance_db/candle.py b/binance_db/candle.py
@@ -2,7 +2,7 @@
 import binance_db.util.constants.ws as ws
 import binance_db.util.constants.rest as rest
 from sqlalchemy.ext.declarative import declarative_base
-from sqlalchemy import Column, String, Integer, Float, DateTime
+from sqlalchemy import Column, String, Integer, Float, DateTime, Index
 
 Base = declarative_base()
 
@@ -22,6 +22,11 @@ class Candle(Base):
     tbbav = Column(Float)
     tbqav = Column(Float)
 
+    __table_args__ = (
+        Index('open_time_asc', open_time.asc(), postgresql_using='btree'),
+        Index('open_time_desc', open_time.desc(), postgresql_using='btree'),
+    )
+
     def __init__(self, pair, kline):
         self.pair = pair
         self.open_time = self.to_date(kline[rest.OPEN_TIME])