imay commented on issue #1356: Wrong query result with constant URL: https://github.com/apache/incubator-doris/issues/1356#issuecomment-504389244 Even this patch can make this query work in a proper way. however I think the root reason won't be fixed. For second operand of the union query ``` SELECT `t`.`brand_id` AS `bigchain_brand_id`, -1 AS `poi_second_city_id`, `t`.`mo` AS `mo` FROM `default_cluster:mart_waimai`.`app_ka_brand_list_m` t; ``` I don't know why the `poi_second_city_id IN (-1)` predicate is used to prune partition. Maybe there is some problem?
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