用于计算记录的SQL查询

Question

我有一张桌子

EntryLog(Name String, CheckIn Boolean)

我想计算每个名字的签到次数。如何编写查询以将结果作为单个结果集？

Answer 1

SELECT Name, COUNT(*) FROM EntryLog WHERE CheckIn GROUP BY Name

Answer 2

尝试：

SELECT COUNT(1) FROM EntryLog WHERE CheckIn = 1 GROUP BY [Name]

Answer 3

SELECT name,
       COUNT(*)
    FROM EntryLog
    WHERE CheckIn
    GROUP BY name;