使用内部连接将两个或多个条件定义到存储过程中？

Question

首先，我需要通过变量 @company_id 过滤表 TbTaxCompanies 和 tbCompany 中的数据...并且有效！

CREATE PROCEDURE taxcompany_importTaxes
    @company_id int
AS
    SELECT 
        tc.idtaxcompany, tc.company_id, c.nameCompany, 
        ct.tax1, ct.tax2, ct.tax3, ct.dateUpgrade
    FROM 
        tbTaxCompanies tc
    INNER JOIN 
        tbCompany c ON tc.company_id = c.idcompany
    WHERE 
        tc.company_id = @company_id
    ORDER BY 
        tc.idtaxcompany ASC

其次，我需要再次过滤之前使用 @company_id 选择的公司的日志集，但现在只获取最新更新的税款（只有一行）......这行不通!

CREATE PROCEDURE taxcompany_importTaxes
    @company_id int
AS
    SELECT 
        tc.idtaxcompany, tc.company_id, c.nameCompany, 
        ct.tax1, ct.tax2, ct.tax3, ct.dateUpdate
    FROM 
        tbTaxCompanies tc
    INNER JOIN 
        tbCompany c ON tc.company_id = c.idcompany
    WHERE 
        tc.company_id = @company_id 
        AND (tc.dateUpdate = (SELECT MAX (dateUpdate) FROM tbTaxCompanies))
    ORDER BY 
        tc.idtaxcompany ASC

非常感谢任何帮助。

Answer 1

如果您想要第一个结果集中的最新行，只需使用 order by 和 top:

SELECT TOP (1) WITH TIES
    tc.idtaxcompany, tc.company_id, c.nameCompany, 
    tc.tax1, tc.tax2, tc.tax3, tc.dateUpgrade
FROM tbTaxCompanies tc
INNER JOIN tbCompany c on tc.company_id = c.idcompany
WHERE tc.company_id = @company_id
ORDER BY tc.dateUpdate DESC

如果您想要每组 的最新行 ，例如每个 tc.idtaxcompany，那么您只需将 ORDER BY 子句更改为：

ORDER BY RANK() OVER(PARTITION BY tc.idtaxcompany ORDER BY tc.dateUpdate DESC)

使用内部连接将两个或多个条件定义到存储过程中？

Define two or more conditions into a stored procedure with inner join?

sql

sql-server

datetime

stored-procedures

greatest-n-per-group