同一地址，不同库的写法

( `uat_xwsc_mysql_data`.`t_union_order` `o` JOIN `uat_xwsc_mysql_data`.`t_union_product` `p` ON ( ( `o`.`UNION_PRODUCT_ID` = `p`.`ID` ) ) )
LEFT JOIN `uat_xwsc_mysql_data`.`t_vip` `v` ON ( ( `v`.`ID` = `o`.`VIP_ID` ) )
)
JOIN `uat_xwsc_mysql_data`.`t_supply_channel` `ss` ON ( ( `ss`.`CHANNEL_ID` = `p`.`CHANNEL_ID` ) )
)