如何在SQL中将三个不同的列合并到一个列中

我有来自不同表的三列：

SELECT
    t1.Count_1, t2.Count_2, t3.Count_3 
FROM 
    (SELECT COUNT(*) AS Count_1 FROM GuestAddressData) AS t1, 
    (SELECT COUNT(*) AS Count_2 FROM GuestAddressData) AS t2,
    (SELECT COUNT(*) AS Count_3 FROM SMSTable) AS t3 

但现在我想得到如下结果：

1,1,1 as total 

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如果您使用的是Oracle SQL，则可以使用：

t1.Count_1||','||t2.Count_2||','||t3.Count_3 as total

CAST(t1.Count_1 AS varchar) + ',' + CAST(t2.Count_2 AS varchar) + ',' + CAST(t3.Count_3 AS varchar) as total

对于SQL Server，您可以使用：

t1.Count_1||','||t2.Count_2||','||t3.Count_3 as total

CAST(t1.Count_1 AS varchar) + ',' + CAST(t2.Count_2 AS varchar) + ',' + CAST(t3.Count_3 AS varchar) as total

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您使用的是哪个版本的SQL？查看结果？e、 g.

选择t1.Count_1+'、“+t2.Count_2+”、“+t3.Count_3[总计]

@TimBiegeleisen 20082008什么？SSMS？您想要这些值的总和还是以逗号分隔？错误：将varchar值“”转换为数据类型int时转换失败。@aparnarai对于SQL Server，请尝试编辑的代码行