SQL转换脚本导致System.OutOfMemoryException

Question

When I run the script below, I get this exception. It crashed after about 20 minutes (+/- a couple minutes). How can I prevent this exception without creating batches? I want to do this for all client records that need it.

Exception:

An error occurred while executing batch. Error message is: Exception of type 'System.OutOfMemoryException' was thrown.

SQL conversion script:

SELECT clientid 
INTO #Temp 
FROM client

DECLARE 
    @iteratorId INT, 
    @phone NVARCHAR(64), 
    @fax NVARCHAR(64),  
    @contactid INT

WHILE (SELECT Count(*) FROM #Temp) > 0 
BEGIN 

    SELECT TOP 1 @iteratorId = clientid FROM #Temp 
    SET @contactid = NULL

    --try and grab the first non null phone number in priority order
    SET @phone = ISNULL((
        SELECT TOP 1 
            dayphone
        FROM contact c 
        INNER JOIN dbo.clientcontact cc ON c.contactid = cc.contactid
        WHERE 
            clientid = @iteratorId
            AND cc.contacttypeid=2
            AND c.dayphone IS NOT NULL
        ORDER BY cc.parentclientcontactid, priority DESC
    ),'')

    --try and grab the first non null fax priority order
    SET @fax = ISNULL((
        SELECT TOP 1 
            fax 
        FROM contact c 
        INNER JOIN dbo.clientcontact cc ON c.contactid = cc.contactid
        WHERE 
            clientid = @iteratorId
            AND cc.contacttypeid=2
            AND c.fax IS NOT NULL
        ORDER BY cc.parentclientcontactid, priority DESC
    ),'')

    IF NOT EXISTS(SELECT * FROM clientcontact WHERE clientid=@iteratorId AND contacttypeid=3 AND priority=1)
    BEGIN       
        INSERT INTO dbo.contact
                ( versionnumber ,
                  createdate ,
                  firstname ,
                  lastname ,
                  title ,
                  middleinitial ,
                  dayphone ,
                  nightphone ,
                  mobilephone ,
                  fax ,
                  securefax ,
                  extranetusername ,
                  extranetpassword ,
                  email ,
                  active ,
                  testfaxpagereceived ,
                  ftpoptionid ,
                  testresultnotify
                )
        VALUES  ( 0 , -- versionnumber - int
                  GETDATE() , -- createdate - datetime
                  NULL , -- firstname - nvarchar(64)
                  NULL , -- lastname - nvarchar(64)
                  NULL , -- title - nvarchar(64)
                  NULL , -- middleinitial - nvarchar(64)
                  NULL , -- dayphone - nvarchar(64)
                  NULL , -- nightphone - nvarchar(64)
                  NULL , -- mobilephone - nvarchar(64)
                  NULL , -- fax - nvarchar(64)
                  '' , -- securefax - bit
                  NULL , -- extranetusername - nvarchar(64)
                  NULL , -- extranetpassword - nvarchar(64)
                  NULL , -- email - nvarchar(127)
                  0 , -- active - bit
                  0 , -- testfaxpagereceived - bit
                  NULL , -- ftpoptionid - int
                  NULL  -- testresultnotify - bit
                )
        SET @contactid = @@IDENTITY

        EXEC dbo.procContactSave 
            @contactid = @contactid, -- int
            @firstname = "General", -- nvarchar(64)
            @middleinitial = NULL, -- nvarchar(64)
            @nightphone = NULL, -- nvarchar(64)
            @lastname = "Info", -- nvarchar(64)
            @email = NULL, -- nvarchar(127)
            @fax = @fax, -- nvarchar(64)
            @testfaxpagereceived = 0, -- bit
            @mobilephone = NULL, -- nvarchar(64)
            @securefax = 0, -- bit
            @active = 1, -- bit
            @extranetpassword = NULL, -- nvarchar(64)
            @extranetusername = NULL, -- nvarchar(64)
            @title = NULL, -- nvarchar(64)
            @ftpoptionid = NULL, -- int
            @dayphone = @phone, -- nvarchar(64)
            @testresultnotify = 0, -- bit
            @audituserid = 0 -- int

        EXEC dbo.procClientContactSave 
            @clientcontactid = NULL, -- int
            @priority = 1, -- int
            @clientid = @iteratorId, -- int
            @contacttypeid = 3, -- int
            @contactid = @contactid, -- int
            @audituserid = 0 -- int
    END 

    DELETE #Temp Where clientid = @iteratorId -- delete row so we don't loop over it again 
END
DROP TABLE #Temp

Answer 1

In the 2 stored procedures mentioned in my comments, I was calling standard web application stored procedures, which inserted a record, but also returned that record in a result set (with just the 1 record) for each iteration in the script. The script ran for 1.5 minutes when I commented the SELECT statement in those 2 stored procedures, so I imagine it was crashing from the amount of data SSMS was displaying from those result sets. That prevented the memory crash, not to mention the reduction in time it took to run (from 20+ min to 1.5 min).