A: Based on the available SQL Server statistics and the workload performed on the SQL Server, the SQL Server Query Optimizer will provide us with a suggested index, that may improve the performance of the submitted query in a calculated percentage. So, it will display that index as a recomm...
A stored procedure is a named group of SQL statements that have been previously created and stored in the server database. Stored procedures accept input parameters so that a single procedure can be used over the network by several clients using different input data. And when the procedure is ...
Linked Servers is a concept in SQL Server by which we can add other SQL Server to a Group and query both the SQL Server dbs using T-SQL Statements. With a linked server, you can create very clean, easy to follow, SQL statements that allow remote data to be retrieved, joined and combi...
SQL Server Profiler is a tool for monitoring and analyzing SQL Server events. It captures and records data about each event, such as query execution, performance metrics, and errors. It allows database administrators to diagnose performance issues, identify slow-running queries, and audit SQL Serve...
4. How to find the query running on a given SPID? 5. What is XACT_ABORT ON? 6. Can we use two CTE’s in a single select query? 7. What are the different join operators in SQL Server? 8. Can we use a table variable inside a nested stored procedure if the table variable created...
Scenario-Based SQL Interview Questions The Bottom Line Top SQL Interview Questions List for 2025 SQL is a common language for Structured Query Language, which is based on general English, whereas MySQL is a database management system. Structured Query Language is the main part of the relational ...
%programfiles%\Microsoft SQL Server\100\Setup Bootstrap\Log\<YYYYMMDD_HHMM>\ Detail.txt Detail.txt is generated for the main workflow such as install or upgrade, and provides the details of the execution. The logs in the file are generated based on the time when each action for the install...
Some of the tools/ways that help you troubleshooting performance problems are: SET SHOWPLAN_ALL ON, SET SHOWPLAN_TEXT ON, SET STATISTICS IO ON, SQL Server Profiler, Windows NT /2000 Performance monitor, Graphical execution plan in Query Analyzer. Download the white paper on performance tuning SQL...
query. Q.Whatiscorrelatedsub-query? ACorrelatedsub_queryisasub_querywhichhasreferencetothemain query. Q. What is an Integrity Constraint ? A Integrity constraint is a rule that restricts values to a column in a table. Q. What is Referential Integrity ?
When we execute a query and use theWHEREkeyword on a column that does not have an index, then the SQL Server has to do a full-table scan and check every row to find matches. This is a bad practice because it can be unpredictable in terms of execution time. Therefore this process may...