xy720 commented on issue #1553: The result of count_distinct() is wrong URL: https://github.com/apache/incubator-doris/issues/1553#issuecomment-569701590 Now the `count_distinct()` is with the same symbol as `count()` function, which means that `count_distinct()` run as the same code as `count()` function. That's why the above mistakes happen. Besides, we already have function `multi_distinct_count()` as an alternative to help us calculate "count distinct" of any type value. So we don't need `count_distinct()` anymore, we should remove this function. 现在`count_distinct()`与`count()`函数具有相同的函数签名，这意味着`count_distinct()`与`count()`函数在后台以相同的代码运行，这就是为什么会发生上述错误。 此外，我们已经有了函数`multi_distinct_count()`来帮助我们计算任何类型值的"count distinct"值。 所以我们不再需要`count_distinct()`，建议删除这个函数。
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