存储过程从一个 table 中获取日期范围并在另一个 table 中使用 WHERE 子句中的结果

Question

我正在尝试编写一个存储过程，它将从视图中获取 @start_dt 和 @end_dt 参数，并将它们用作另一个 [=34= 上的 WHERE 子句中的参数].

我正在尝试获取 @start_dt 和 @end_dt 之间的 HEATS 总数。然后我需要将此 SELECT 语句的结果插入 table.

如何在程序中声明 @start_dt 和 @end_dt？我如何使用光标浏览每对 @start_dt 和 @end_dt 并在加热时进行计数？

此查询已完成一半：

CREATE PROCEDURE sp_EAF_HEAT_COUNT
AS
    SELECT 
        @START_DT as START_DT, 
        @END_DT as END_DT, 
        COUNT(DISTINCT HEAT_ID) AS NUM_HEATS
    FROM 
        [SSABDB].[L2].[EAF_HEAT] 
    WHERE 
        PROCESS_UNIT = 'EAFA'
        AND START_DT > @START_DT 
        AND END_DT < @END_DT

    INSERT INTO DASH.EAFA_HEAT_COUNT (START_DT, END_DT, FURNACE, NUM_HEATS) 
    VALUES (@START_DT, @END_DT, 'A', NUM_HEATS)
END

Answer 1

看代码应该是直接插入，不需要游标

例如：

CREATE PROCEDURE sp_EAF_HEAT_COUNT(@START_DT  date, @END_DT date)    
AS
BEGIN
   INSERT 
     INTO DASH.EAFA_HEAT_COUNT 
          (START_DT
          , END_DT
          , FURNACE
          , NUM_HEATS
          ) 
  SELECT MAX(b.START_DT)
       , MAX(b.END_DT)
       , COUNT(distinct HEAT_ID) as NUM_HEATS
    FROM [SSABDB].[L2].[EAF_HEAT] a
    JOIN dbo.EAFA_T b
      ON a.START_DT > b.START_DT 
     AND a.END_DT < b.END_DT            
   WHERE a.PROCESS_UNIT = 'EAFA'
GROUP BY concat(convert(varchar(12),b.START_DT,101),'_',convert(varchar(12),b.END_DT,101))

END

再次根据评论更新！

Answer 2

还有一种方法。

CREATE PROCEDURE sp_EAF_HEAT_COUNT(@START_DT  DATETIME, @END_DT DATETIME)
  
AS
BEGIN

--Finding Count 
DECLARE @CNT_HEADID = (SELECT 
  SELECT Count(distinct HEAT_ID) as NUM_HEATS
  FROM [SSABDB].[L2].[EAF_HEAT] where PROCESS_UNIT = 'EAFA'
AND  START_DT > @START_DT and END_DT < @END_DT)
   
-- Inserting the Count
   INSERT INTO DASH.EAFA_HEAT_COUNT (START_DT, END_DT, FURNACE, NUM_HEATS) VALUES (@START_DT, @END_DT, 'A', @CNT_HEADID)
END

Answer 3

SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO



CREATE PROCEDURE [dbo].[spEAFA_HEAT_COUNT]
 
AS
BEGIN

DECLARE 
       @START_DT datetime
       ,@END_DT datetime
       ,@CNT_HEATS INT


DECLARE tblCursor CURSOR FOR   
       SELECT 
               START_DT , END_DT
       FROM 
              dbo.EAFA_T
      
       ORDER BY 
              END_DT
  
OPEN tblCursor  
  
FETCH NEXT FROM tblCursor   
INTO @START_DT, @END_DT 
  
WHILE @@FETCH_STATUS = 0  
BEGIN  
select @CNT_HEATS = Count(distinct HEAT_ID)
  FROM [DATABASENAME].[SCHEMANAME].[TABLENAME] where PROCESS_UNIT = 'EAFA'
AND  START_DT > @START_DT and END_DT < @END_DT
 
INSERT INTO Dashboard.EAFA_HEAT_COUNT (START_DT, END_DT, FURNACE, NUM_HEATS) VALUES (@START_DT, @END_DT, 'A', @CNT_HEATS)
 
    FETCH NEXT FROM tblCursor   
    INTO @START_DT, @END_DT 
END  


CLOSE tblCursor;  
DEALLOCATE tblCursor;  


END
GO

存储过程从一个 table 中获取日期范围并在另一个 table 中使用 WHERE 子句中的结果

Stored Procedure to take date range from one table and use the results in WHERE clause in another table

sql

tsql

sql-server

stored-procedures