sql stored procedure performance tuning

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SQL Performance Tuning common statements (excerpt online)

1. Import the trace file into the tableSELECT IDENTITY (BIGINT11 as RowNumber,* into TableNamefrom fn_trace_gettable ('trace.trc'default)2. Querying for statements with large CPU overheadSELECT Top -Total_worker_time/Execution_count asAvg_cpu_cost, Plan_handle, Execution_count, (SELECT SUBSTRING(text, Statement_start_offset/2 + 1, ( Case whenStatement_end_offset= -1 Then LEN(CONVERT(nvarchar(Max),text))* 2 ELSEStatement_end_offsetEND -Statement_start_offset)/2) fro

SQL Stored Procedure Learning

The concept, advantages and syntax of SQL stored procedures Before you start to learn the procedure, what is the stored procedure? Why use stored procedures, he has those advantages Definition: The use of commonly used or very c

SQL stored procedure internal RAISERROR client cannot catch the wrong solution

Tags: put ant negative public lines syn SEM var withWe have a Sea macro commercial ERP3, the inventory is written with stored procedures, reduce inventory will first check the negative inventory, such as there are 5 you think of the library 6, the stored procedure is RAISERROR (' Insufficient inventory ', 16, 1). After the recent release of this version, some cus

Modifying a stored procedure in SQL Server 2005

When the server| stored procedure first used SQL Server 2005, it did not know how to save it after modifying the stored procedure. I found the appropriate stored procedure in the

SQL Server common stored procedure collection _mssql

data table name and field name EXEC sp_rename ' old_table_name ', ' new_table_name '-modifying datasheet name EXEC sp_rename ' table_name. [Old_column_name] ', ' new_column_name ', ' column '-Modify field name –4. Gets the contents of the stored procedure by a given stored procedure name EXEC sp_helptext Sp_name /* Th

Debug T-SQL Stored Procedure msdn

Debug T-SQL stored procedures Create a connection to the adventureworks sample database in a new SQL server project. For more information, seeHow to: connect to a database. Use the code in the first example below to create a new stored procedure and name itHelloworld. For

I'm also talking about code call stored procedure timed out, SQL Server Management Studio running fast problem

A recent problem was a fast-executing stored procedure that timed out when it was called in the code.Later, I saw two articles:One of the articles is aboutToday, when a colleague calls a stored procedure with code that times out, running in SQL Server Management Studio will

Modify the stored procedure in SQL Server 2005

When you first used SQL Server 2005, you didn't know how to save after you modified the stored procedure. I found the appropriate stored procedure in the SQL Server Management Studio progammability, right click and select "Modify"

SQL stored procedure

Advantages of stored procedures: Reduced network traffic on the server client, enhanced security, code reuse, easier maintenance, and improved performance creation stored procedures: USEAdventureWorks2012; GOCREATEPROCEDUREHumanResources. uspGetEmployeesTest2 @ LastNamenvarchar (50), @ FirstNamenvarcha Advantages of stored

sql--stored procedure + trigger comparison!

One, stored proceduresA: Stored procedure: A stored procedure is a set of SQL statements that are compiled and stored in a database in order to accomplish a specific function.You can us

Simple SQL stored procedure instance, storage process combat

Instance 1: A stored procedure that returns only a single recordset. The contents of the Bank deposit form (Bankmoney) are as follows Id userid Sex money 001 Zhangsan male 002 Wangwu Male , 003 Zhangsan Male $ Requirement 1: A

21. Oracle PL/SQL classification one stored procedure

Stored procedures are used to perform specific operations when a stored procedure is established, you can specify either an input parameter (in) or an output parameter (out), you can pass the data to the execution part by using the input parameters in the procedure, and you can pass the execution part of the data to th

SQL Server performance Tuning SQL Server 2008 This table compression

rows reserved data index_size unused TB_WCB 9439661 317208 kb 167168 KB 149872 KB 168 KB */ we found that the size before index compression was 329M. And after compression is 149M, the compression ratio is 45%. The effect is also very obvious. Summarize: Compression through tables and indexes. We can reduce the disk space occupied by the table, this is only part of it, and more importantly, reading the same amount of data, just need to read less data pages,

SQL Server Paging query Common stored procedure (only for paging queries) _mssql

The has been used since the start of the project. The original of this stored procedure (SORRY, forget the name), write this section of the SQL code is very good, I on this basis, according to my habits and thinking mode, adjusted the code, only to do paging query. /*----------------------------------------------*proce

Analysis and code of the stored procedure for creating paging by SQL Server

Here we can see a Data Control paging function written in SQL stored procedures, regardless of the Data Control in the development tool, you only need to call this stored procedure to implement this method. It's easy. We no longer need to write a lot of SQL statements on eve

SQL SERVER self-bringing system stored procedure classification

Directory Stored Procedures Used to implement ODBC data dictionary functionality and isolate ODBC applications from the impact of changes to the underlying system tables. Change data capture stored procedures Used to enable, disable, or report on change data capture objects. Cursor Stored Procedures Used to implement the

SQL Server stored procedure Basic syntax

be returned by the Select, Update,delete, database table;3. You must return a scalar value or a table variable custom function is generally used in a high degree of reuse, simple function, a strong fight against the place. Second, the stored procedure1. Cannot return table variable2less restrictive, can perform operations on database tables, can return datasets3. You can return a scalar value, or omit the return

Talend call SQL Server stored procedure with table structure list parameter

Purpose: To invoke SQL Server stored procedure with table structure list parameter with TalendImplementation: Because Talend current components do not seem to implement such a function, and do not want to write a component, so use Tjavarow to encode the implementation.1, we can first through Maven to download the comparison of new Mssql-jdbc.jar, I download the f

Assign exec execution results to variable output in SQL Server stored procedure

varchar ", @cou out, @idPrint @cou2. PerformanceAs you can see, if you use Exec, because each incoming @id is not the same, each time the generated @sql is different, so that each time Sql2005 must be executed again to re-compile the dynamic SQLBut sp_executesql is not the same, due to the numerical parameterization, the dynamic SQL to be executed will never change, but the value of the parameters passed i

The difference between stored procedure and function of SQL

from dbo. GETGrade2 (' Zhang San ',' language ')Create a stored procedure, find a stored procedureCREATE PROC p_view (@userName nvarchar (ten), @subject nvarchar ( e-mail Protected] and [subject]=@subjectENDExecute the storage process' John Doe ',' mathematics 'Essentially no difference. Just a function like: Only one variable can be returned with a limit. A

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