执行select语句的结果

Question

如何执行我的选择查询的结果.下面的查询为我提供了一些SQL语句.我想执行do语句,怎么做？所有这些都在SQL Sever Management Studio中执行.

查询:

SELECT 'UPDATE Rolecopy SET PartofFT = ''' + R2.PlayedbyOT + ''', OriginalOT = ''' + R.PlayedbyOT + ''' WHERE RoleNo = ' + CAST(R.RoleNo AS VARCHAR) + CHAR(13)
FROM Role R INNER JOIN Role R2
ON R.PartofFT = R2.PartofFT AND R.RoleNo <> R2.RoleNo
WHERE EXISTS (
    SELECT PG.RoleNo
    FROM V_PurposeGrouping PG
    WHERE R.PartofFT = PG.PartofFT
    AND R.RoleNo <> PG.RoleNo
)

结果:

UPDATE Rolecopy SET PartofFT = 'Student', OriginalOT = 'Teacher' WHERE RoleNo = 5.00
UPDATE Rolecopy SET PartofFT = 'Project', OriginalOT = 'Teacher' WHERE RoleNo = 8.00
UPDATE Rolecopy SET PartofFT = 'Project', OriginalOT = 'description' WHERE RoleNo = 10.00
UPDATE Rolecopy SET PartofFT = 'Student', OriginalOT = 'Project' WHERE RoleNo = 15.0

0

Answer 1

尝试使用第一个查询打开游标,然后在循环中将结果字符串作为动态SQL执行.

declare commands cursor for
SELECT 'UPDATE Rolecopy SET PartofFT = ''' + R2.PlayedbyOT + ''', OriginalOT = ''' + R.PlayedbyOT + ''' WHERE RoleNo = ' + CAST(R.RoleNo AS VARCHAR) + CHAR(13)
FROM Role R INNER JOIN Role R2
ON R.PartofFT = R2.PartofFT AND R.RoleNo <> R2.RoleNo
WHERE EXISTS (
    SELECT PG.RoleNo
    FROM V_PurposeGrouping PG
    WHERE R.PartofFT = PG.PartofFT
    AND R.RoleNo <> PG.RoleNo
)

declare @cmd varchar(max)

open commands
fetch next from commands into @cmd
while @@FETCH_STATUS=0
begin
  exec(@cmd)
  fetch next from commands into @cmd
end

close commands
deallocate commands