how to trace query in sql server profiler

Usage scenarios:For example, you need to query all student numbers with scores greater than 95, separated by commas into a string, from the Student score table.To prepare the test data:CREATE TABLE score (ID int,score int)INSERT into score values (1,90)INSERT into score values (2,96)INSERT into score values (3,99)It is now necessary to query the result string "2,,3" with a single statement.The

% 870 (4688 lines) Stored Procedures Proc: @ProductID = 870 1305 17 928 17 Is KB 26% 870 (4688 lines) In-stored procedure declaration Proc:where P.productid [email protected] 1305 18 984 18 Is KB 24% 897 (2 lines) Instant Query where P.productid =897 20 10 792 10 Is KB 13%

=n ' Ms_description ', @value =n ' table notes ', @level0typE=n ' SCHEMA ', @level0name =n ' dbo ', @level1type =n ' table ', @level1name =n ' name ' EXEC sp_updateextendedproperty @name =n ' Ms_ Description ', @value =n ' table Notes ', @level0type =n ' SCHEMA ', @level0name =n ' dbo ', @level1type =n ' table ', @level1name =n ' name '/*** Query comment Related sql***********************/--view table Comm

SQL random Query SQL Server: Select Top N * from Table order by newid () The newid () function creates a unique value of the uniqueidentifier type. The preceding statement reads N records randomly from the table. MySQL: Select * from Table order by rand () limit 10 STR converts a number to a string for compa

server| Page | resolution | data | statement For example: request to select the No. 3000 page of tbllendlist records, each page 100 records. ----------Method 1:----------Select Top * from Tbllendlistwhere Fldserialno not in(Select Top 300100 fldserialno from TbllendlistORDER BY Fldserialno)ORDER BY Fldserialno ----------Method 2:----------SELECT Top 100 *From TbllendlistWHERE (Fldserialno >(SELECT MAX (Fldserialno)From (SELECT top 300100 Fldserialno

. For example, when multiple indexes are used, the SELECT query may run faster. However, the speed of DML (insert, update, and delete) operations will be significantly slowed down because more indexes must be maintained for each operation. Therefore, if your query mainly contains select statements, it is very helpful to use more indexes. If your applicationProgramTo perform many DML operations, it is necess

Ind_attribute.is_ Disabled as [is disabled] 4 from (5 select Tab_name,index_name, [Co_names]=stuff ((SELECT ', ' +[co_name ') from 6 (select Tab. Name as Tab_name,ind. Name as index_name,col.name as Co_name from sys.indexes IND 7 INNER JOIN Sys.tables tab on Ind. object_id = tab.object_id and Ind.type in (8) inner join sys.index_columns index_columns on tab.object_id = Index_colu mns.object_id and ind.index_id = index_columns.index_id 9 inner join sys.columns Col on tab.object_id = col.object_i

SSMs can provide the ability to view the plans that are being executed. Live query plan can view the execution of a query, from one query plan action to another query plan operation. Live query plan provides overall query run prog

The word booksearch may be unfamiliar to many developers. Many people have encountered this word, but they have not paid enough attention to it, so they have always ignored its existence. The word booksearch may be unfamiliar to many developers. Many people have encountered this word, but they have not paid enough attention to it, so they have always ignored its existence. The growth of SQL Server Cognit

Many of my friends may be making mistakes in performance optimization as described below. If you have any need, please refer to the mistakes in SQL Server query performance optimization to get out of the index. Many of my friends may be making mistakes in performance optimization as described below. If you have any need, please refer to the misunderstanding of

(TRUE ), when the write lock is performed, all Query Cache related to the table will be invalidated. If it is set to 0 (FALSE), the Query Cache related to the table can still be read at the lock time. 3. Query Cache and Performance Nothing is too late, especially for systems with frequent writes, enabling the Query Ca

Tags: Benefits Right click Access lib ORM tle blog together SDNReading Query plans:stairway to SQL Server Indexes level 9 by David Durant, 2011/10/05 Original link: http://www.sqlservercentral.com/articles/Stairway+Series/72441/ The Series This article is part of the ladder series: SQL

The SELECT clause is logically the last step in the final processing of the SQL statement, so the following query will have an error: SELECT year (OrderDate asorderyearCOUNT(DISTINCT CustomerID fromdboGROUP by OrderYear; Because group by was preceded by a SELECT, the OrderYear column was not formed at that time. If you want to query for su

The growth of SQL Server Cognition 1. I don't have to graduate or work for a long time. I only know the relationship between SQL and SQL Server Oracle and MySql. I usually think that SQL is S