Your question is a bit unclear. I assume you want to do something like this: SELECT SUM(count_per_trip) FROM ( SELECT trip_id, ... ... <看更多>
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MySQL : Count distinct values [ Beautify Your Computer : https://www.hows.tech/p/recommended.html ] MySQL : Count distinct values Note: The ... ... <看更多>
mysql count different values 在 Managing-Big-Data-with-MySQL/mysql_exercise_04.sql 的推薦與評價
SELECT COUNT(DISTINCT dog_guid). FROM dogs. WHERE exclude=1. # Try counting the number of NULL values in the exclude column:34025. %%sql. ... <看更多>
mysql count different values 在 Count distinct values - mysql - Stack Overflow 的推薦與評價
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