Question

我有一个带有UPDATE语句的存储过程，我想更新另一个存储过程的结果中的字段。

第一个存储过程：

ALTER PROCEDURE [dbo].[usp_sproc1]
AS
BEGIN
    SET NOCOUNT ON;
    SELECT  *
    FROM    Database1.dbo.tbl_dB1table AS t1
            INNER JOIN Database2.dbo.tbl_dB2table AS t2 ON t1.field = t2.field
            INNER JOIN Database3.dbo.tbl_dB3table AS t3 ON t3.field2 = t1.field2 AND t3.field2 = t2.field2
            INNER JOIN Database4.dbo.tbl_dB4table AS t4 ON t4.field3 = t2.field3
    WHERE       (field5 = 'c') AND (some_date IS NULL)
END

第二个存储过程：

CREATE PROCEDURE [dbo].[usp_ASCRoadAmericaUpdateDateInternal] 
AS
BEGIN
    SET NOCOUNT ON;
    UPDATE      Database1.dbo.tbl_dB1table
    SET         spr1.some_date = GETDATE()
    FROM (EXEC dbo.[usp_sproc1]) AS spr1
END

所以我想检索第一个存储过程的结果集，然后使用今天的日期更新Database1.tbl_dB1table中的some_date字段，但只更新第一个存储过程返回的那些记录。

是否可以在不将第一个存储过程的结果转储到CURSOR并迭代每个记录的情况下完成此操作？

Answer 1

CREATE PROCEDURE dbo.usp_sproc2
AS
BEGIN
  SET NOCOUNT ON;

  UPDATE t1 
    SET some_date = GETDATE() -- you probably mean CONVERT(DATE, GETDATE())?
  FROM        Database1.dbo.tbl_dB1table AS t1
  INNER JOIN  Database2.dbo.tbl_dB2table AS t2 
              ON t1.field = t2.field
  INNER JOIN  Database3.dbo.tbl_dB3table AS t3 
              ON t3.field2 = t1.field2 
              AND t3.field2 = t2.field2
  INNER JOIN  Database4.dbo.tbl_dB4table AS t4 
              ON t4.field3 = t2.field3
  WHERE       (field5 = 'c') AND (t1.some_date IS NULL);
  -------------^^^^^^ what table does this column come from?
END
GO

SQL - 更新存储过程结果中的字段

1 个答案: