Question

我正在使用SQL Server 2008 R2 我有这样的商店程序：

CREATE PROCEDURE Get_Code_Tourne_Matin
    -- Add the parameters for the stored procedure here
@The_FA int,
@The_Jour int,
@The_Insee varchar(10)
AS
BEGIN
declare @TheCode varchar(250)


set @TheCode = case
    when exists (SELECT T_TOURNE_LABEL.LIBELLE 
                  FROM TOURNE
                  LEFT JOIN T_TOURNE_LABEL ON TOURNE.LIB_TOURNE = T_TOURNE_LABEL.NOID
                  WHERE THE_FA = @The_FA AND 
                        NO_INSEE = @The_Insee AND 
                        JOUR = @The_Jour AND 
                       (datepart(hh, LE_HEURE) between 13 and 23 or datepart(hh, LE_HEURE) between 0 and 6)) then LIBELLE
    when exists (SELECT LIBELLE
                  FROM TOURNE
                  LEFT JOIN T_TOURNE_LABEL ON TOURNE.LIB_TOURNE = T_TOURNE_LABEL.NOID
                  WHERE THE_FA = @The_FA AND 
                        NO_INSEE = @The_Insee AND 
                        JOUR = 0 AND 
                       (datepart(hh, LE_HEURE) between 13 and 23 or datepart(hh, LE_HEURE) between 0 and 6)) then LIBELLE
    else '00'


    end


RETURN @TheCode  
END

我只想归还libelle 当发现第一个选择3变量然后重新启动libelle
否则如果在找到时选择2变量，则返回libelle
否则后退'00'

似乎LIBELLE上的语法错误

任何想法？

Answer 1

我认为：

set @TheCode = COALESCE(
(SELECT TOP 1 T_TOURNE_LABEL.LIBELLE 
                  FROM TOURNE
                  LEFT JOIN T_TOURNE_LABEL ON TOURNE.LIB_TOURNE = T_TOURNE_LABEL.NOID
                  WHERE THE_FA = @The_FA AND 
                        NO_INSEE = @The_Insee AND 
                        (JOUR = @The_Jour OR JOUR = 0) AND 
                       (datepart(hh, LE_HEURE) between 13 and 23 or datepart(hh, LE_HEURE) between 0 and 6)
ORDER BY JOUR DESC), '00')

应涵盖所有案件。（如果您的查询中永远不会有两个匹配的行，其中一行有JOUR = @The_Jour而另一行有JOUR = 0，那么您可以删除TOP 1和ORDER BY子句（请注意我假设任何可能的@The_Jour值都是＆gt; 0）

Answer 2

set @TheCode =(  SELECT   ISNULL(( SELECT TOP 1 T_TOURNE_LABEL.LIBELLE
               FROM   TOURNE
               LEFT JOIN T_TOURNE_LABEL ON TOURNE.LIB_TOURNE = T_TOURNE_LABEL.NOID
               WHERE  THE_FA = @The_FA AND NO_INSEE = @The_Insee AND JOUR = @The_Jour
                               AND ( DATEPART(hh, LE_HEURE) BETWEEN 13 AND 23
                               OR DATEPART(hh, LE_HEURE) BETWEEN 0 AND 6
                               )), '00') AS LIBELLE

Answer 3

CREATE PROCEDURE Get_Code_Tourne_Matin
@The_FA int,
@The_Jour int,
@The_Insee varchar(10)
AS
BEGIN
declare @TheCode varchar(250)
    Set @TheCode = '';
    SELECT top 1 @TheCode = T_TOURNE_LABEL.LIBELLE 
            FROM TOURNE
            LEFT JOIN T_TOURNE_LABEL ON TOURNE.LIB_TOURNE = T_TOURNE_LABEL.NOID
            WHERE THE_FA = @The_FA AND 
                NO_INSEE = @The_Insee AND 
                (JOUR = @The_Jour or JOUR = 0 )AND 
                (datepart(hh, LE_HEURE) between 13 and 23 or datepart(hh, LE_HEURE) between 0 and 6)

    set @TheCode = case
        when len(@TheCode) > 0
        when exists (SELECT @TheCode)
        else '00'

        end
    RETURN @TheCode  
END

SQL select case语句

3 个答案: