es sql distinct
时间: 2023-09-05 07:12:55 浏览: 50
回答: 在ES SQL中,要实现字段去重可以使用DISTINCT关键字。例如,使用SELECT DISTINCT channel FROM index WHERE name = 'name' AND channelType = 'channelType'可以实现对channel字段的去重。\[3\]另外,如果你想要统计某个字段的去重数量,可以使用COUNT(DISTINCT field)的语法。例如,使用SELECT COUNT(DISTINCT user_id) FROM table WHERE user_id_type = 2 GROUP BY user_id可以统计user_id字段的去重数量。\[1\]如果你只是想要统计某个字段的数量,可以使用COUNT(field)的语法。例如,使用SELECT COUNT(user_id) FROM table GROUP BY user_id_type可以统计user_id字段的数量。\[2\]
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