我有一个包含四列的表：print，Id，Name，CampaignId。
以下是示例：
+----+-----------+------------+------+ | Id | NAME | CampaignId | Type | +----+-----------+------------+------+ | 1 | Campaign1 | 10 | 0 | | 2 | Campaign2 | 11 | 0 | | 3 | Campaign2 | 11 | 1 | | 4 | Campaign2 | 11 | 2 | | 5 | Campaign2 | 11 | 3 | | 6 | Campaign3 | 12 | 1 | | 7 | Campaign3 | 12 | 2 | | 8 | Campaign3 | 12 | 2 | | 9 | Campaign3 | 12 | 2 | | 10 | Campaign4 | 13 | 0 | | 11 | Campaign4 | 13 | 2 | +----+-----------+------------+------+
Type我需要一个查询来创建一个新表，该表将输出一行，其中包含DROP TABLE IF EXISTS #TMP;
CREATE TABLE #TMP (
[Id] INT IDENTITY ,
[NAME] NVARCHAR(20),
[CampaignId] INT,
[Type] INT
);
INSERT INTO #TMP ([Name], [CampaignId], [Type]) VALUES
('Campaign1', 10, 0),
('Campaign2', 11, 0),
('Campaign2', 11, 1),
('Campaign2', 11, 2),
('Campaign2', 11, 3),
('Campaign3', 12, 1),
('Campaign3', 12, 2),
('Campaign3', 12, 2),
('Campaign3', 12, 2),
('Campaign4', 13, 0),
('Campaign4', 13, 2)
SELECT * FROM #TMP
中每个唯一值的Name，CampaignId和列以及每个唯一值的对应计数Type。
我不知道CampaignId列中的确切数字和可能的值。可能会有所不同。
样本数据集的预期结果是一个表
+-----------+------------+-------+-------+-------+-------+ | Name | CampaignId | Type0 | Type1 | Type2 | Type3 | +-----------+------------+-------+-------+-------+-------+ | Campaign1 | 10 | 1 | 0 | 0 | 0 | | Campaign2 | 11 | 1 | 1 | 1 | 1 | | Campaign3 | 12 | 0 | 1 | 3 | 0 | | Campaign4 | 13 | 1 | 0 | 1 | 0 | +-----------+------------+-------+-------+-------+-------+
答案 0 :(得分：0)
使用条件聚合
selecr name,CampaignId,sum(case when type =0 then 1 else 0 end) as type0,
sum(case when type =1 then 1 else 0 end) as type1,
sum(case when type =2 then 1 else 0 end) as type2,
sum(case when type =3 then 1 else 0 end) as type3 from #TMP
group by name,CampaignId
答案 1 :(得分：0)
尝试一下：
SELECT name,
campaignid,
Type0=sum(case when type= 0 then 1 else 0 END ) ,
Type1=sum(case when type= 1 then 1 else 0 END ) ,
Type2=sum(case when type= 2 then 1 else 0 END ) ,
Type3=sum(case when type= 3 then 1 else 0 END )
FROM #TMP
group by name,campaignid