我得到了这个问题:
完整性约束违规:1052 列“created_at”在 where 子句中不明确
但表格sales_flat_order_grid
有created_at
列
SELECT DISTINCT main_table.*,
blacklist.entity_id AS marked
FROM sales_flat_order_grid AS main_table
LEFT JOIN (SELECT main_table.*
FROM plugincompany_blacklist_item AS main_table
WHERE ( order_id != '0' )
GROUP BY order_id) AS blacklist
ON main_table.entity_id = blacklist.order_id
WHERE ( created_at >= '2016-11-03 00:00:00'
AND created_at <= '2016-11-26 23:59:59' )