我正在创建一个简单的游标，它从表中获取所有记录，并为每个记录检查另一个表中的条件并更新第一个表。
为此，我使用光标。
这个光标似乎不起作用。我检查了记录是否可用。它似乎没有进入光标所有
ALTER PROCEDURE [dbo].[updatetimecardlineitemsabc]
-- Add the parameters for the stored procedure here
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
-- Insert statements for procedure here
SELECT *
INTO #tctemp
FROM timecardlineitem
DECLARE @records_size INT
DECLARE @ctr INT
SET @ctr=0
SET @records_size = 0
DECLARE @Id VARCHAR(30)
DECLARE @project VARCHAR(30)
DECLARE @consultant VARCHAR(30)
DECLARE @ass_cons VARCHAR(30)
DECLARE @mondate DATE
DECLARE @sundate DATE
DECLARE @acId VARCHAR(30)
DECLARE @count INT
DECLARE @ct INT
PRINT( 'hello' )
SELECT @ct = COUNT(*)
FROM timecardlineitem
WHERE assigned_consultant__c IS NULL
PRINT( '@ct is .....' + CONVERT(VARCHAR(20), @ct) )
DECLARE cursor_Timecard_Line_Item CURSOR FOR
SELECT id,
project__c,
consultantId__c,
assigned_consultant__c,
MONDAY_DATE__C,
SUNDAY_DATE__C
FROM timecardlineitem
WHERE assigned_consultant__c IS NULL
OPEN cursor_Timecard_Line_Item
FETCH cursor_Timecard_Line_Item
INTO @Id, @project, @consultant,
@ass_cons,@mondate, @sundate
PRINT('@id,@project,@consultant......'+@id+'-----'+@project+'-----'+@ass_cons+
'-----'+convert(varchar,@mondate)+'-----'+convert(varchar,@sundate))
WHILE @@FETCH_STATUS = 0
BEGIN
SELECT @acId = ID
FROM assignedcons
WHERE Project__c = @project
AND Contact__c = @consultant
AND ( Start_Date__c <= @sundate
OR Start_Date__c = NULL )
AND ( End_Date__c >= @mondate
OR End_Date__c = NULL )
UPDATE timecardlineitem
SET assigned_consultant__c = @acId
WHERE id = @Id
FETCH cursor_Timecard_Line_Item
INTO @Id, @project, @consultant,
@ass_cons,@mondate, @sundate
END
CLOSE cursor_Timecard_Line_Item
DEALLOCATE cursor_Timecard_Line_Item
END
它只是打印你好 @ct是..... 483
有483条记录
它不会在fetch中打印print语句。我知道我做的事非常愚蠢。只是无法识别它
编辑：这是需要的
我有2张桌子
这是timecardlineitem
的结构[ID] [varchar](50) NULL,
[ISDELETED] [varchar](50) NULL,
[NAME] [varchar](50) NULL,
[CREATEDDATE] [varchar](50) NULL,
[CREATEDBYID] [varchar](50) NULL,
[LASTMODIFIEDDATE] [varchar](50) NULL,
["LASTMODIFIEDBYID"] [varchar](50) NULL,
[SYSTEMMODSTAMP] [varchar](50) NULL,
[LASTACTIVITYDATE] [varchar](50) NULL,
[TIMECARD__C] [varchar](50) NULL,
[ASSIGNED_CONSULTANT_EXISTS__C] [varchar](50) NULL,
[FRIDAY_DATE__C] [varchar](50) NULL,
[FRIDAY_HOURS__C] [varchar](50) NULL,
[MONDAY_DATE__C] [varchar](50) NULL,
[MONDAY_HOURS__C] [varchar](50) NULL,
[PROJECT_END_DATE__C] [varchar](50) NULL,
[PROJECT_NAME__C] [varchar](50) NULL,
[PROJECT_START_DATE__C] [varchar](50) NULL,
[PROJECT__C] [varchar](50) NULL,
[SATURDAY_DATE__C] [varchar](50) NULL,
[SATURDAY_HOURS__C] [varchar](50) NULL,
[STATUS__C] [varchar](50) NULL,
[SUNDAY_DATE__C] [varchar](50) NULL,
[SUNDAY_HOURS__C] [varchar](50) NULL,
[THURSDAY_DATE__C] [varchar](50) NULL,
[THURSDAY_HOURS__C] [varchar](50) NULL,
[TOTAL_HOURS__C] [varchar](50) NULL,
[TUESDAY_DATE__C] [varchar](50) NULL,
[TUESDAY_HOURS__C] [varchar](50) NULL,
[WEDNESDAY_DATE__C] [varchar](50) NULL,
[WEDNESDAY_HOURS__C] [varchar](50) NULL,
[BILLABLE_HOURS__C] [varchar](50) NULL,
[CLIENT_NAME__C] [varchar](50) NULL,
[TOTAL_EXPECTED_HOURS__C] [varchar](50) NULL,
[PROJECT_TYPE__C] [varchar](50) NULL,
[PROFESSIONAL_CHECKBOX__C] [varchar](50) NULL,
[DAY_CHARGE__C] [varchar](50) NULL,
[UTILIZATION_NO_DAY_CHARGE__C] [varchar](50) NULL,
[MONDAY_DAY_CHARGE__C] [varchar](50) NULL,
[TUESDAY_DAY_CHARGE__C] [varchar](50) NULL,
[WEDNESDAY_DAY_CHARGE__C] [varchar](50) NULL,
[THURSDAY_DAY_CHARGE__C] [varchar](50) NULL,
[FRIDAY_DAY_CHARGE__C] [varchar](50) NULL,
[SATURDAY_DAY_CHARGE__C] [varchar](50) NULL,
[SUNDAY_DAY_CHARGE__C] [varchar](50) NULL,
[UTILIZATION_DAY_CHARGE__C] [varchar](50) NULL,
[UTILIZATION_DAYS__C] [varchar](50) NULL,
[CONSULTANT_NAME__C] [varchar](50) NULL,
[BILLING_WEEKLY_TARGET__C] [varchar](50) NULL,
[UTILIZATION__C] [varchar](50) NULL,
[HOURS_REMAINING_ON_PROJECT__C] [varchar](50) NULL,
[PROJECT_OWNER__C] [varchar](50) NULL,
[CONSULTANTID__C] [varchar](50) NULL,
[ASSIGNED_CONSULTANT__C] [varchar](50) NULL
这是[assignedcons]
的结构[ID] [varchar](50) NULL,
[ISDELETED] [varchar](50) NULL,
[NAME] [varchar](50) NULL,
[CREATEDDATE] [varchar](50) NULL,
[CREATEDBYID] [varchar](50) NULL,
[LASTMODIFIEDDATE] [varchar](50) NULL,
[LASTMODIFIEDBYID] [varchar](50) NULL,
[SYSTEMMODSTAMP] [varchar](50) NULL,
[LASTACTIVITYDATE] [varchar](50) NULL,
[PROJECT__C] [varchar](50) NULL,
[CONTACT__C] [varchar](50) NULL,
[APPROVING_MANAGER__C] [varchar](50) NULL,
[C85_EMAIL_ADDRESS__C] [varchar](50) NULL,
[C85_PROJECT_LEAD__C] [varchar](50) NULL,
[CURRENT_STATUS_FORMULA__C] [varchar](50) NULL,
[CURRENT_STATUS__C] [varchar](50) NULL,
[DAILY_CHARGE_RATE_OF_CONSULTANT__C] [varchar](50) NULL,
[END_DATE__C] [varchar](50) NULL,
[LEAVE_STATUS__C] [varchar](50) NULL,
[LEAVE_TYPE__C] [varchar](50) NULL,
[LEAVES_AVAILABLE__C] [varchar](50) NULL,
[NOTES__C] [varchar](50) NULL,
[PROJECT_ROLE_TITLE__C] [varchar](50) NULL,
[REMAINING_YEAR_FREE_DAYS_FORMULA__C] [varchar](50) NULL,
[REMAINING_YEAR_FREE_DAYS__C] [varchar](50) NULL,
[START_DATE__C] [varchar](50) NULL,
[TOTAL_LEAVES_APPLIED__C] [varchar](50) NULL,
[TOTAL_PO_VALUE_FOR_CONSULTANT__C] [varchar](50) NULL,
[UNIQUE_PARAMETER__C] [varchar](50) NULL,
[YEAR_END__C] [varchar](50) NULL,
[ASSIGNED_DAYS_TO_CONSULTANT__C] [varchar](50) NULL,
[CONSULTANT_DAY_COST__C] [varchar](50) NULL,
[MARGIN_ACHIEVED__C] [varchar](50) NULL,
[OVERTIME_ALLOWED__C] [varchar](50) NULL,
[CLIENT_NAME__C] [varchar](50) NULL,
[SUB_TOTAL__C] [varchar](50) NULL,
[BILLABLE_HOURS__C] [varchar](50) NULL,
[CONSULTANT_DAY_COST_STAMPED__C] [varchar](50) NULL,
[TOTAL_HOURS_BOOKED_APPROVED__C] [varchar](50) NULL,
[LAST_TIMECARD_DATE__C] [varchar](50) NULL,
[TOTAL_CHARGES_INCURRED__C] [varchar](50) NULL,
[DAYS_APPROVED__C] [varchar](50) NULL,
[STATUS__C] [varchar](50) NULL,
[ID_WITH_LINK__C] [varchar](50) NULL,
[TOTAL_HOURS_REMAINING_ON_PROJECT__C] [varchar](50) NULL,
[NOMINAL_CODE__C] [varchar](50) NULL
timecardlineitem中的记录很少，在名为ASSIGNED_CONSULTANT__C的字段中有空值
对于那些具有空值的记录，我需要在assignedcons中搜索id 即我需要从timecardlineitem获取第一条记录，在assigncons中搜索，项目和顾问ID相同，其开始日期为＆lt; = SUNDAY_DATE__C，enddate为＆gt; = MONDAY_DATE__C
SELECT ID
FROM assignedcons
WHERE Project__c = @project // @project is the project__c from timecardlineitem
AND Contact__c = @consultant // @consultant is the CONSULTANTID__C from timecardlineitem
AND ( Start_Date__c <= @sundate //@sundate is the SUNDAY_DATE__C from timecardlineitem
OR Start_Date__c = NULL )
AND ( End_Date__c >= @mondate //@sundate is the monday_DATE__C from timecardlineitem
OR End_Date__c = NULL )
ID ASSIGNED_CONSULTANT__C project__c CONSULTANTID__C SUNDAY_DATE__C monday_DATE__C
1 null pjA CS1 16-Oct-2011 09-oct-2011
2 null pjB CS2 16-Oct-2011 09-oct-2011
Assigned consultant project__c Contact__c startDate Enddate
AC-001 CS1 pjA cs1 09-oct-2011 16-oct-2011
ASSIGNED_CONSULTANT__C应持有AC-001，用于ID为1的timecardlineitem
答案 0 :(得分：0)
你的问题有点TLDR，但我认为你只需要UPDATE...FROM
UPDATE t
SET t.assigned_consultant__c = a.ID
FROM timecardlineitem t
JOIN assignedcons a
ON a.Project__c = t.project__c
AND a.Contact__c = t.consultantId__c
AND ( a.Start_Date__c <= t.SUNDAY_DATE__C
OR a.Start_Date__c IS NULL )
AND ( a.End_Date__c >= t.MONDAY_DATE__C
OR a.End_Date__c IS NULL )
或者，使用相关子查询
UPDATE timecardlineitem
SET assigned_consultant__c = (SELECT DISTINCT a.ID
FROM assignedcons a
WHERE a.Project__c = t.project__c
AND a.Contact__c = t.consultantId__c
AND ( a.Start_Date__c <=
t.SUNDAY_DATE__C
OR a.Start_Date__c IS NULL )
AND ( a.End_Date__c >= t.MONDAY_DATE__C
OR a.End_Date__c IS NULL ))
第二个优点是，如果JOIN返回多个可能的ID，则会引发错误而不是获得不确定的结果。