Find Nth highest salary using RANKING functions
Suppose you want to find nth highest salary from a table,Then
you can use DENSE_RANK() function.Here i show some example that...
2012-12-19
50,510 reads
Querying Microsoft SQL Server
Partitioning Table in SQL Server:
Partitioning Table in SQL Server: When your database has large tables. Then partitioning will be beneficial
in terms of performance, scalability and maintainability....
2012-12-10
1,320 reads
Sending Querying Data on Mail as Attached File
Sending
Querying Data on Mail:
Sometimes we need to send data fetched from query on
mail automatically. You can
create report and after running...
2012-12-07
734 reads
Linked Server setup with Oracle
Linked Server
Setup with Oracle in SQL Server:
Suppose you want to access data from
oracle or other database products using T-SQL via...
2012-10-23
2,259 reads
Basics of Triggers in SQL Server
Querying Microsoft SQL Server : Basics of Triggers in SQL Server: SQL Triggers: A trigger is a procedural code like stored...
2012-09-29
1,407 reads
Basics of Indexes in SQL Server
Querying Microsoft SQL Server : Basics of Indexes in SQL Server: Indexes in SQL Server: If you see a book, in...
2012-09-29
1,278 reads
Connection String from Visual Studio
Querying Microsoft SQL Server : Connection String from Visual Studio: Connection String: A connection string contains connection information need to connect...
2012-09-22
882 reads
Data Types in SQL Server
Querying Microsoft SQL Server : Data Types in SQL Server: Data Type Description Remarks BIGINT Used for large Integer data.(Range -2^63 ...
2012-09-22
393 reads
Functions in SQL Server
Functions in SQL Server: Functions in SQL Server In SQL Server functions are subrotienes that encapsulate a group of T-SQL...
2012-09-22
598 reads
Error Handling in T-SQL
Error Handling in T-SQL: Error handling in T-SQL: Error handling in T-SQL is similer to other programming languages as C#,C++,Java.A...
2012-09-22
622 reads
Blogs
What is KTLO? Keep The Lights On vs Project Work in Agile
By Rohit Garg
Demystifying KTLO: A Deep Dive into Keep The Lights On Work in IT...
The PASS Summit on Tour in Dallas
By Steve Jones
The PASS Summit goes on tour this year, with a September stop in Dallas....
SQL Server Auto-settings: The Good, the Bad, and the Ugly
By Kevin3NF
Settings That Could Be Hurting Your Performance If you’ve ever created a new SQL...
Forums
How a Legacy Logic Choked SQL Server in a 30-Year-Old Factory
Comments posted to this topic are about the item How a Legacy Logic Choked...
Formatting Dates and Times: The SQL Dialect Divide
Comments posted to this topic are about the item Formatting Dates and Times: The...
Query Plan Regressions --
Comments posted to this topic are about the item Query Plan Regressions --
Question of the Day
Query Plan Regressions --
For the Question of the day, I am going to go deep, but try to be more clear, as I feel like I didn't give enough info last time, leading folks to guess the wrong answer... :) For today's question: You’re troubleshooting a performance issue on a critical stored procedure. You notice that a previously efficient query now performs a full table scan instead of an index seek. Upon investigating, you find that an NVARCHAR parameter is being compared to a VARCHAR column in the WHERE clause. What is the most likely cause of the query plan regression?
See possible answers