sql stored procedure performance tuning

Studying a project code made by someone else, we can see that there is a piece of stored procedure calling code in the database. The original code is complicated. So I plan to write a simple example to learn it. 1. Create a stored procedure to be called. USE [MSPetShop4] The PetShop's ready-made database GOALTERPROCEDU

SQL Server uses Trigger to monitor the stored procedure change script instance, trigger Stored Procedure The following triggers are used to monitor changes to stored procedures.Create a monitoring table: Create table AuditStored

This statement applies to ms SQL Server 2000/2005Set Quoted_identifier On Go Set Ansi_nulls On Go -- Getcontentbyprocedurename '[DBO]. [stored procedure name]' Create Procedure Getcontentbyprocedurename ( @ Procedurename Nvarchar ( 500 )) As If Exists ( Select * From DBO. syscomments Where ID = Obj

Method 1: Use the output parameter Use adventureworks;GoIf object_id ('production. usp_getlist', 'P') is not nullDrop procedure production. usp_getlist;GoCreate procedure production. usp_getlist @ Product varchar (40), @ Maxprice money, @ Compareprice money output, @ Listprice money outAsSelect P. Name as product, P. listprice as 'list price'From production. product PJoin production. productsubcategory sOn

The primary key of the table must be the ID column. [ID] int identity) 1. Stored ProcedureSelect top page size *From testtableWhere (id not in(Select top page size * Page IDFrom tableOrder by ID ))Order by ID 2. cursor Stored ProcedureCreate procedure sqlpager@ Sqlstr nvarchar (4000), -- query string@ Currentpage int, -- page n@ Pagesize int -- number of line

SQL: Oracle11g table, view, stored procedure structure query, oracle11g Stored Procedure -- GetTablesSELECT owner, object_name, created FROM all_objects WHERE (owner in (select USERNAME from user_users) AND object_type = 'table' order by owner, object_name; -- GetTableColumn

recordset of stored procedure B without altering the stored procedure B, and then return the filtered/changed result set to the caller of stored procedure a?All of these questions have one thing in common, which is that you want

This statement applies to ms SQL SERVER 2000/2005SET QUOTED_IDENTIFIER ON GO SET ANSI_NULLS ON GO -- GetContentByProcedureName '[dbo]. [stored procedure name]' Create procedure GetContentByProcedureName (@ ProcedureName nvarchar (500 )) As If exists (select * from dbo. syscomments where id = object_id (n'' + @ Proced

weeks data in tens of millions of.Lan Hua Main 16:13:22Ok.Orchid Island Main 16:16:29So change the SQL:with T1 as (Select count (t.c1), t.c1,t.c2,t.c3,t.c4,t.c5From Tab1 twhere T.c2 not in (' Val1 ', ' val2 ', ' val3 ', ' val4 ', ' VAL5 ')and C1 is not NULLGroup by T.C1, T.C2,T.C3,T.C4,T.C5)Select T1.c1,t1.c2,t1.c3,t1.c4,t1.c5from T1Where NOT EXISTS (Select/*+ Use_hash (m,n) */M.C1, M.C2,M.C3,M.C4,M.C5from T1 m,tab2 Nwhere N.c2 > Sysdate-14and m.c1 = N.c1and t1.c2 = M.C2);Orchid Island Main 16:

can avoid Key lookup is perfect, let's revise non-clustered index to include it in the index with the Include keyword His fields are:[SQL] DROP INDEX idx_non_clust_salesorddetaildemo_modifieddate on salesorddetaildemo GO CREATE nonclustered INDEX idx_non_clust_salesorddetaildemo_modifieddate on salesorddetaildemo (ModifiedDate) INCLUDE ( ProductID, UnitPrice ) GO --Clear the cache, only for the development environment! DB

Label:--Maintenance Database----Stored procedure (procedure)----Overview： 　　 A stored procedure for SQl serve is a collection of one or more T-SQL statements。 Common program code Snippe

1. a case where the stored procedure does not return a value ( that is, a statement in a stored procedure statement that does not have a return )Using the method int count = ExecuteNonQuery (..) There are only two cases of executing a stored

. Therefore, a bookmark lookup combined with a nonclustered index lookup makes sense because the query is selective. Now I'll execute the query with the 80000 parameter value. 1 --Execute the stored procedure 2 EXECRetrievecustomers1 3 GO 4 5 --Execute the stored procedure again 6 --This introduces now a plan regress

callBegin-- The package public variable is initialized-- To the default value automaticallyPkg1.print _ pkg_state;-- Prints 0END; Ii. Determine PL/SQL Performance problems When we develop more and more PL/SQL applications, we will inevitably encounter performance problems. Therefore, PL/

Define a stored procedure as follows:CREATE proc [dbo]. [Test1] @id Intasselect 1 as ID, ' ABC ' as name union ALL select @id as ID, ' zzz ' as nameReturns two rows of data.Now you want to call the stored procedure with the SQL statement and put the table he returned into th

statements. Using adbc in the abap environment is similar to using JDBC in the Java environment. The reports and transactions they write can use any available interface to access the database. Use DB2 parameters in SAP Open SQL SAP supports a batch of DB2 parameters that can be added to Open SQL statements to affect how natural SQL statements generated from Open

1. Define a SQL class HelloDROP JAVA SOURCE newxzxt. " Hello "; CREATE OR REPLACE and RESOLVE JAVA SOURCE NAMED newxzxt. " Hello "as import java.lang.*; public class Hello {public static string say (String args) { System.out.println (args); return args; } } /2. The SQL class above the stored

Example of recursive calling of stored procedures in SQL Server: SQL Server Stored Procedure Recursion refers to the situation where a code snippet calls itself. The danger lies in how to prevent it from repeatedly calling itself if it calls itself once. That is to say, rec