don't shrunk the codes number

alphamind/data/engines/sqlengine.py

@@ -126,8 +126,8 @@ class SqlEngine(object):
               " from (uqer INNER JOIN" \
               " risk_exposure on uqer.Date = risk_exposure.Date and uqer.Code = risk_exposure.Code)" \
               " INNER JOIN market on uqer.Date = market.Date and uqer.Code = market.Code" \
-              " INNER JOIN tiny on uqer.Date = tiny.Date and uqer.Code = tiny.Code" \
-              " INNER JOIN legacy_factor on uqer.Date = legacy_factor.Date and uqer.Code = legacy_factor.Code" \
+              " LEFT JOIN tiny on uqer.Date = tiny.Date and uqer.Code = tiny.Code" \
+              " LEFT JOIN legacy_factor on uqer.Date = legacy_factor.Date and uqer.Code = legacy_factor.Code" \
               " INNER JOIN daily_return on uqer.Date = daily_return.Date and uqer.Code = daily_return.Code" \
               " INNER JOIN {risk_table} on uqer.Date = {risk_table}.Date and uqer.Code = {risk_table}.Code" \
               " where uqer.Date = '{ref_date}' and uqer.Code in ({codes})".format(factors=factor_str,