如何从mysql中的另一个表更新多个字段？

这是我试图完成的查询：

update amdashboard
set (ASCID, ASCFirst, ASCLast, ASCOtherName, ASCAdd1, ASCAdd2,
     ASCCity, ASCState, ASCZip, ASCZip4, ASCY2007, ASCY2008, ASCY2009,
     ASCY2010, ASCY2011, ASCY2012, ASCEthnicity, ASCGender, ASCMaritalStatus)
= (select id, firstname, lastname, listingspousename, add1, add2,
          city, state, zip, zip4, y2007, y2008, y2009,
          y2010, y2011, y2012, Ethnicity, Gender, MaritialStatus
     from ASCNCOAClean
          inner join amdashboard
          on ASCNCOAClean.firstname = amdashboard.actorsfirst
          and ascncoaclean.lastname = amdashboard.actorslast)
    where exists (select id, firstname, lastname, listingspousename,
                         add1, add2, city, state, zip, zip4, y2007, y2008,
                         y2009, y2010, y2011, y2012, Ethnicity, Gender,
                         MaritialStatus
                    from ASCNCOAClean
                         inner join amdashboard
                         on ASCNCOAClean.firstname = amdashboard.actorsfirst
                         and ascncoaclean.lastname = amdashboard.actorslast);

我无法让它工作…在第一个括号中收到语法错误。所以，我想我应该试着在一个领域。我试过这个：

update amdashboard
set ascid = (select ascncoaclean.id
         from ASCNCOAClean 
         where ASCNCOAClean.firstname = amdashboard.actorsfirst
                           and ascncoaclean.lastname = amdashboard.actorslast)
where exists (select ascncoaclean.id
         from ASCNCOAClean 
         where ASCNCOAClean.firstname = amdashboard.actorsfirst
                           and ascncoaclean.lastname = amdashboard.actorslast);

但是，这将返回错误1242：子查询返回的行数超过1行。这似乎很愚蠢。我知道它将返回多行…我希望它返回，因为我需要更新多行

---

我缺少什么？

您想要的查询如下所示：

UPDATE amdashboard a, ASCNCOAClean b SET
   a.ASCID            = b.id,
   a.ASCFirst         = b.firstname,
   a.ASCLast          = b.lastname,
   a.ASCOtherName     = b.listingspousename,
   ...
   a.ASCMaritalStatus = b.MaritialStatus
WHERE a.actorsfirst = b.firstname;

注意，您将不得不用我没有编写的其余列关联替换

…

但是要小心，有些东西告诉我这个查询会对数据库造成很大的错误，因为您没有使用唯一的键来关联表。如果有两条记录具有相同的

asncocaclean.firstname

，则肯定会丢失数据

还要注意，它将更新

amdashboard

上的现有记录，而不是添加新记录。如果您打算将数据从

ascnaclean

迁移到

amdashboard

，假设

amdashboard

是一个全新的空表，那么您需要的查询如下：

INSERT INTO amdashboard (
    ASCID, ASCFirst, ASCLast, ASCOtherName, ASCAdd1, ASCAdd2, ASCCity, ASCState, 
    ASCZip, ASCZip4, ASCY2007, ASCY2008, ASCY2009, ASCY2010, ASCY2011, ASCY2012,
    ASCEthnicity, ASCGender, ASCMaritalStatus
)
SELECT
    id, firstname, lastname, listingspousename, add1, add2, city, state,
    zip, zip4, y2007, y2008, y2009, y2010, y2011, y2012, Ethnicity, Gender,
    MaritialStatus
FROM ASCNCOAClean;

---

您可以发布一些示例数据或架构结构吗？谢谢…我基本上已经找到了解决方案。更新amdashboard内部连接ascnaclean on ascnaclean.firstname=amdashboard.actorsfirst和ascnaclean.lastname=amdashboard.actorslast set/*amdashboard.ascd=ascnaclean.id，*/*amdashboard.ascfirst=ascnaclean.firstname，*/amdashboard.asclast=ascnaclean.lastname，amdashboard.ascothername=ascnaclean.listingspowsename，amdashboard.ascad1=ascnaclean.add1，amdashboard.ascad2=ascnaclean.add2，amdashboard.asccity=ascnaclean.city，amdashboard.ascstate=ascnaclean.state，amdashboard.asczip=ascnaclean.zip；对不起，我仍然习惯于这个工具…我知道它的格式不好…我尝试在姓氏和名字上链接，是的，我想我知道我有重复数据的问题。这是一个客户的清理工作…我想更新匹配的记录，然后插入不匹配的记录。