Question

我有一张这样的表：

--Table Answer--
Id     Question_id  Attendee_id  Answer
100    qst1          001         Name1
101    qst2          001         Name1
102    qst3          002         Name2

我想知道如何计算具有相同值的答案？

Answer 1

A standard SQL aggregate

SELECT Answer, COUNT(*) FROM MyTable GROUP BY Answer

Answer 2

Select Answer, Count(*) FROM answer GROUP BY Answer

Answer 3

SELECT answer,COUNT(*) FROM table
GROUP BY answer

Answer 4

对于每个问题？

SELECT
    Question_id,
    Answer,
    COUNT(1) qty
GROUP BY
    Question_id, Answer

从Question_id和SELECT排除GROUP BY，如果您想要总计数，而不是按问题划分，尽管我认为这个数字不太有用。

如何计算具有相同值的答案？

4 个答案: