將姓氏和姓氏合併，並更新到每行的全名列中

Question

對於每個姓和名，我只想將它們組合並更新到同名「姓名」表中的全名列中。

這應該發生在表中的每一行。這些列是Id，FirstName，LastName和FullName。

任何幫助，將不勝感激

update Names n 
set n.FullName = (
    select CONCAT(FirstName,' ',LastName) 
    from Names a 
    where n.Id = a.Id 
) 
where n.FullName is null 
and n.FirstName is not null and n.LastName is not null 

Answer 1

這將更新科拉姆全名是空白或有NULL值。

UPDATE Names 
SET FullName = ISNULL(FirstName + ' ','') + ISNULL(LastName,'') 
WHERE ISNULL(FullName,'') = '' 

編輯

UPDATE Names 
SET FullName = FirstName + ' ' + LastName 
WHERE ISNULL(FullName,'') = '' AND ISNULL(FirstName,'') <> '' AND ISNULL(LastName,'') <> ''