how to optimize stored procedures in sql server

Due to the needs of the project, many modules have to implement the bulk deletion function. To facilitate the invocation of the module, the bulk Delete method is written as a custom function. directly on the code.Custom functions:ALTER FUNCTION [dbo]. [Func_splitbyid] (@str varchar (), @split varchar (10))--Passed ID string- -split flag returns @t table (id int) --Returns a table Asbegin DECLARE @x XML --splicing SET @x = CONVERT (XML, ' Bulk Delete Memory Call Custom function:ALTER pro

@strOrderType = ' ORDER by ' + @ascColumn + ' ASC 'SET @strTemp = ' > (SELECT max ')ENDIf @currPage = 1--If it is the first pageBEGINIF @strCondition! = "SET @strSql = ' SELECT TOP ' + STR (@pageSize) + '+ @showColumn + ' from ' + @tabName + ' WHERE '+ @strCondition + @strOrderTypeELSESET @strSql = ' SELECT TOP ' + STR (@pageSize) + '+ @showColumn + ' from ' + @tabName+ @strOrderType ENDelse--Other pagesBEGINIF @strCondition! = "SET @strSql = ' SELECT TOP ' + STR (@pageSize) + '+ @showColumn +

SQL Server APIs are not efficient. If you are interested, you can test it. Let me know by the way. Thank you ~ The name of this application is SP _, but the SQL Server APIs are all SP _ headers. It is said that this prefix will be first searched in the API, reducing the performance. If you want to go and do not want t

Procedures andServerCAndServerCStored ProcedureServerDWhen a distributed query is executed, all the four SQL servers enter the distributed transaction.ServerAIs the creator and control server of the transaction. The connection involved in the Distributed Transaction Transact-SQL does not obtain the transaction object

Tags: style os ar sp size on C SQL programStored procedure definition: A set of pre-written T-SQL programs that can implement a functionCategory: System stored procedures extended stored procedures user-defined stored proceduresUser-defined stored procedure creation: (no parameter) up to 128MCreate PROC pr_ Example a s

SQL Server tables: SELECT COUNT (1) from sysobjects where xtype= ' U ' views: select COUNT (1) from sysobjects where xtype= ' V ' number stored procedures Selec T count (1) from sysobjects where xtype= ' P 'SELECT * from sysobjects WHERE (xtype = ' U ')C = CHECK ConstraintD = defaults or DEFAULT constraintsF = FOREIGN KEY constraintL = LogFN = Scalar functionIF =

Tags: io using ar for Data SP Art C onA stored procedure, a collection of named T-SQL statements stored on a server, is a way to encapsulate repetitive work.Why use stored procedures?All clients can ensure consistency of data access and modification through the same stored procedures.Permissions control, you can individually assign execute permissions for the sto

Exception Handling in programming is very important. Of course, exception handling in Stored Procedures in SQL statements is also very important. explicit exception prompts can quickly find the root cause of the problem, saving a lot of time. Next, we will take data insertion as an example to illustrate how to capture exceptions in SQL

Based on Spring Boot, use JPA to call the stored procedures of the SQL Server database and return a set of records. springjpa In the previous article "using Spring Boot and JPA to operate SQL Server database to complete CRUD", we completed the CRUD operation on Object Data U

There are many paging methods for SQL Server 0.1 million. Is it more efficient? It will be difficult to reach the level or above. This is not an example here. Row_number is also a major improvement over SQL server2005. For details, refer Copy codeThe Code is as follows: SQL Server2005 General paging storage process Cr

ENCRYPTION Keyword: ENCRYPTION CREATE procedure dbo. sp_EytTest Decryption: The stored process of decryption is from the network and needs to be used under DAC. Decrypt SQL server 2000: Create PROCEDURE [dbo]. [sp_decrypt] (@ objectname varchar (50 )) Decrypt SQL server 2005/2008: Create PROCEDURE [dbo]. [sp _ windb

1. Improved version of "Russian stored procedure" CREATE procedure pagination1(@ Pagesize int, -- page size, such as storing 20 records per page@ Pageindex int -- current page number)As set nocount on Begin Declare @ indextable table (id int identity (), nid int) -- Define table VariablesDeclare @ PageLowerBound int -- defines the bottom code of this page.Declare @ PageUpperBound int -- defines the top code of this page. Set @ PageLowerBound = (@ pageindex-1) * @ pagesizeSet @ PageUpperBound = @

server| Stored Procedures | paging SQL Server Stored procedure paging, this issue has been discussed for several years, a lot of friends are asking me, so I would like to post my point of view Create a table: CREATE TABLE [TestTable] ( [ID] [int] IDENTITY (1, 1) not NULL, [FirstName] [nvarchar] (MB) COLLATE chinese_pr

' [emailprotected]+ ' () returns@ttable (name nvarchar () withencryptionasbeginreturnend ' else ' altertrigger ' [email protected]+ ' on ' +quotename (Object_schema_name (@objectID)) + '. ' + (Selecttop (1) quotename (object_name (parent_id)) fromsys.triggersawhere [emailprotected]) + ' NBSP;WITHNBSP;ENCRYPTIONNBSP;FORNBSP;UPDATENBsp;asreturn ' end set@[emailprotected]+ '/* ' [email protected]set@i=0while@i2. Open SSMs and create a new DAC connection, for example, with "admin:" before the inst

In program development, we often have to do is to access the database. Sometimes you invoke stored procedures and DTS, and here's an example to illustrate how to implement The first part invokes the stored procedure (with the parameter and get the return value) 1. Call SQL Server stored procedures If we have one of

appropriate database 9. EXEC sp_stored_procedures-Displays a list of stored procedures with default values, default NULL to display all stored procedures 10. exec sp_password @old = ', @new = 1234--Change the password for the current login, @old default to NULL, @new No default value, you must specify 11. EXEC sp_helptext Vw_studentinfo[usp_getscore]--Displays the actual text of a stored procedure that is

Tags: style blog http strong data ar 2014 code logA stored procedure can be used to improve the efficiency of a database query because it is compiled beforehand, stored in memory, and does not have to be newly compiled before each execution, so it is highly efficient. A stored procedure is a set of SQL Additions and deletions, and if a function in the program involves multiple operations on the database, you can compile the stored

Before 2008 if we want to pass a table as an input parameter to a SQL Server stored procedure makes it more difficult, it may take a lot of logical processing to pass these table data as strings or XML. Table-valued parameters are provided in 2008. With table-valued parameters, you can send multiple rows of data to a Transact-SQL statement or routine, such as a

– Create a primary table temp tableCREATE TABLE #temp(RowNumber bigint,Orderseqno VARCHAR (36),Goodsname VARCHAR (50),CompanyName VARCHAR (100))– Create a child table temporary tableCREATE TABLE #detail(Orderseqno VARCHAR (36),Detailid uniqueidentifier,UnitPrice DECIMAL (12,2),Qty int)– Insert primary table data into the primary table temp tableINSERT INTO #tempSELECT Oo.rownumber, Oo. Orderseqno, Oo. Goodsname, Oo.companyname from(SELECT row_number () over (order by Oi.createdate DESC) as RowNu

Tags: style blog http use file dataA case that requires renaming a database in multiuser mode has recently been encountered, because the database may be used by other users, so direct modification may fail. In this case, we can wait until all users have finished using the database, or switch the database to single-user mode.Sometimes, we need to take the production environment database to the development environment directly to test the development process. We can rename the database directly on