两列的SQL合并结果

Question

我有一张像这样的桌子 -

firstName - lastName - dob - region - authority

这是使用

的查询

 SELECT firstName, lastName, region from whatever

是否可以在结果中合并firsName和lastName，我需要在实际数据库中保持firstName和lastName分开但是在结果中合并它们 -

firstname lastname - region

Answer 1

试试..

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

Answer 2

您的查询将如下：

<强>甲骨文：

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

<强> MySQL的：

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

<强> MSSQL：

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

Answer 3

我愿意：

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