我有这个查询来获取两个日期之间的账单的所有细节:
SELECT DT.*
FROM DetailTable DT, BillTable BT, PackageTable PT
WHERE PT.Id = BT.IdPackage
AND DT.IdBill= BT.Id
AND PT.CodeCompany = @codeCompany
AND PT.Date BETWEEN @begin and @end
对于每个包裹都有很多账单,我想获得公司账单的详细信息, 数据库中的结果只有20,000,但我有:
System.Data.SqlClient.SqlException(0x80131904):超时已过期。该 在完成操作或之前经过的超时时间 服务器没有响应。
c#代码:
using (SqlConnection sqlConn = new SqlConnection(SqlServerMasterConnection))
{
if (sqlConn.State != ConnectionState.Open) sqlConn.Open();
using (SqlCommand cmd = new SqlCommand("select DT.* from DetailTable DT, BillTable BT, PackageTable PT where PT.Id= BT.IdPackage and DT.IdBill= BT.Id and PT.CodeCompany = @codeCompany and PT.Date between @begin and @end",
sqlConn))
{
cmd.Parameters.Add(new SqlCeParameter(@begin , beginDate));
cmd.Parameters.Add(new SqlCeParameter("@end", endDate));
cmd.Parameters.Add(new SqlCeParameter("@codeCompany", codeCompany));
using (DbDataReader reader = cmd.ExecuteReader())
{
while (reader.Read())
{
//work todo
}
}
}
}
我甚至在SQL Server Management中试过这个需要25秒!任何暗示请解决。
更新
这是执行计划:
UPDATE2
我对这个问题有两个问题(我想要你的想法)。
PT.Date
是char(8)
(开发人员如何使用它开始此项目)(yyyyMMdd)
detailTable
包含102列。
答案 0 :(得分:3)
尝试此查询 -
SELECT DT.*
FROM dbo.DetailTable DT
WHERE EXISTS(
SELECT 1
FROM dbo.BillTable BT
JOIN (
SELECT PT.Id
FROM dbo.PackageTable PT
WHERE PT.CodeCompany = @codeCompany
AND PT.Date BETWEEN @begin AND @end
) PT ON PT.Id = BT.IdPackage
WHERE DT.IdBill = BT.Id
)
另一种方式 -
CREATE PROCEDURE dbo.usp_Test1
@codeCompany VARCHAR(50)
, @begin DATETIME
, @end DATETIME
AS
BEGIN
IF OBJECT_ID (N'tempdb.dbo.#temp') IS NOT NULL
DROP TABLE #temp
CREATE TABLE #temp (ID BIGINT PRIMARY KEY)
INSERT INTO #temp (ID)
SELECT BT.Id
FROM dbo.BillTable BT
JOIN dbo.PackageTable PT ON PT.Id = BT.IdPackage
WHERE PT.CodeCompany = @codeCompany
AND PT.[Date] BETWEEN @begin AND @end
SELECT DT.*
FROM dbo.DetailTable DT
WHERE DT.IdBill IN (SELECT Id FROM #temp)
END