用于获取计数的SQL查询和具有多个记录的行

Question

我试图找出SQL Server的SQL查询：

TABLE：

ID    AppointmentID    TypeID
------------------------------
1     1992             1
2     1992             1
3     1992             2
4     1993             1
...

期望的结果：

AppointmentID    TypeCount TypeID
---------------------------------
1992             2         1

我只是在寻找计数超过1的AppointmentID TypeID = 1。

谢谢，

Answer 1

使用此查询：

SELECT AppointmentID, COUNT(*) as TypeCount, TypeID FROM YourTableName 
WHERE TypeID =1 
GROUP BY AppointmentID, TypeID  
HAVING COUNT(*) > 1

将YourTableName替换为实际的表名

Answer 2

Fiddle

我们的表格：

CREATE TABLE appointments
(
    ID INT,
    AppointmentID INT,
    TypeID INT
);

一些数据：

INSERT INTO appointments VALUES (1, 1992, 1);
INSERT INTO appointments VALUES (2, 1992, 1);
INSERT INTO appointments VALUES (3, 1992, 2);
INSERT INTO appointments VALUES (4, 1993, 1);

查询：

SELECT AppointmentID, count(*) AS TypeCount, TypeID FROM appointments
WHERE TypeID = 1
GROUP BY AppointmentID, TypeID
HAVING count(*) > 1;