两列的SQL合并结果

我有一张这样的桌子-

名字-姓氏-dob-地区-机构

这就是我使用的查询

 SELECT firstName, lastName, region from whatever

是否可以在结果中像这样合并firsName和lastName，我需要在实际数据库中保持firstName和lastName分开，但在结果中像这样合并它们-

firstname lastname-地区

试试看

SELECT CONCAT(firstName,' ',lastName) as Name, region from whatever

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您的查询如下：

甲骨文：

SELECT firstname || ' ' || lastname as name, region from whatever

SELECT CONCAT(firstname ,' ', lastname) as name, region from whatever

SELECT firstname + ' ' + lastname as name , region from whatever

MySQL:

SELECT firstname || ' ' || lastname as name, region from whatever

SELECT CONCAT(firstname ,' ', lastname) as name, region from whatever

SELECT firstname + ' ' + lastname as name , region from whatever

MSSQL:

SELECT firstname || ' ' || lastname as name, region from whatever

SELECT CONCAT(firstname ,' ', lastname) as name, region from whatever

SELECT firstname + ' ' + lastname as name , region from whatever

我会：

 SELECT firstName || ' ' || lastName as name, region from whatever;

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在Oracle数据库中，您将使用

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运算符，在SQL Server中，您将使用

+

运算符。您使用的是什么数据库？–从您的问题或标签中看不清楚。

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实际上甚至是ANSI SQL@Yasirrassanukaev:

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操作符不是Oracle特有的。这是近30年前SQL标准中定义的。顺便说一句，您正在尝试合并两列，而不是行。不幸的是，Microsoft SQL management studio 2005 CONCAT无法工作