姓氏，名字开关

Question

请帮忙，我对SQL不太满意，但我在下面创建了查询。它从房间预订系统中提取信息，以显示在数字标牌产品上。

目前，“姓名”字段输出为lastname, firstname。我真的需要它显示为Firstname Lastname但仍在一列之下。

有人可以看一下吗？非常感谢。

SELECT 
    HOST9006.DESCRIPTION, 
    HOST0110.ROOMNAME, 
    HOST0140.NAME, 
    dateadd(mi, HOST0120.STARTMINS, HOST0120.MTGDATE) AS ASTART, 
    dateadd(mi, HOST0120.ENDMINS, HOST0120.MTGDATE) AS AFINISH, 
    CONVERT(VARCHAR(5), dateadd(mi, HOST0120.STARTMINS, HOST0120.MTGDATE) ,108) AS START, 
    CONVERT(VARCHAR(5), dateadd(mi, HOST0120.ENDMINS, HOST0120.MTGDATE) ,108) AS FINISH, 
    HOST0120.MTGKEY, HOST0120.HIPTYPE, HOST0120.ROOMKEY
FROM 
    HOST0140
    INNER JOIN HOST0120
    ON HOST0120.OWNERKEY=HOST0140.PERSONKEY
    INNER JOIN HOST9006
    ON HOST9006.KEYVALUE=HOST0120.MTGSTATE
    INNER JOIN HOST0110
    ON HOST0110.ROOMKEY=HOST0120.ROOMKEY
WHERE 
    CANCELSTATE='0'
AND MTGDATE >= DATEADD(day, DATEDIFF(day, 0, GETDATE()), 0)
AND MTGDATE < DATEADD(day, DATEDIFF(day, 0, GETDATE()), 1)
AND MTGSTATE <> '11'
ORDER BY START

由于

Answer 1

这应该让你开始使用sql-server（你没有指定你正在使用的RDBMS）：

select substring(col1, charindex(',', replace(col1, ' ', '')) + 1, len(col1)) 
  + ' ' 
  + left(col1, charindex(',', col1) -1) as First_Last
from names

请参阅SQL Fiddle with Demo

Answer 2

这适用于mySQL

select concat(right(Name, length(Name) - instr(Name, ',') - 1), ' ', left(Name, instr(Name,',')-1)) from mytable