SQL Performance Tuning- Tips for Tuning SQL Server
                     SQL Performance Tuning- Tips 
for Tuning SQL Server Like a 
Pro
 
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Whether you’re a developer 
or DBA (Database 
Administrator) or system 
admin, once in a while you 
will surely get stuck with the 
long-running queries in the 
SQL server. For this, you 
need to execute 
SQL performance tuning. 
SQL performance tuning 
could be an incredibly 
daunting task, especially 
when you are indulged with 
large-scale data. It is so 
because, with large-scale 
data, even the most minor 
change made by you can 
create a dramatic impact on 
the performance which could https://tossk
be both positive and a.com/
negative. 
If you believe the theory, performance tuning is 
supposed to be done by the DBA. However, the fact 
says that they don’t have much time to scrutinize 
every single change made to the stored procedure. 
But, if you think it practically, it would be done by the 
developer. Regardless of who you are, if you want to 
performance tune your SQL server, then you should 
follow the tips provided in this blog. https://tossk
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6 Essential 
Tips for SQL 
PSQeL rpfeorforrmmanacen tucneing  
Tisu nthien gp rocess of 
ensuring queries of a 
relational database or 
SQL statements issued 
by an application run as 
fast as possible.  It’s not 
a single technique or 
tool but a set of 
practices that uses a https://tossk
wide array of tools, a.com/
techniques, and 
processes. 
Let us discover a few 
tips that are helpful in 
the performance tuning 
of the SQL server. They 
are as follows:
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1. Before you begin, define a clear 
set of business requirements 
Before you actually begin 
performance tuning in SQL oracle server, you must 
do the right things from square one. So, you must 
ensure the following:
• You have clearly identified the relevant 
stakeholders. Besides, while querying production 
databases, it’s crucial to involve the DBA. 
• Identify your requirements and ensure they are 
met by answering five sets of questions that are 
Why? Who? What? When? Where?
• Determine whether identified requirements are 
specific and to the point because it’s too risky to 
tax the database with ambiguous requirements. 
• Do focus on business outcomes and henttspusre:/ /tthoes sk
query has a unique and definite purpao.sceo. m/
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2. Use SELECT instead of 
SELECT* which Sis EreLaEdC aTs *select all should 
be used for smaller tables where you have 
a limited number of fields and rows. 
However, if you use it for longer tables, it 
will query all the data from them and will 
present a list. It will become difficult for you 
to shorthand what you want. 
Therefore, instead of using SELECT*, you 
should use SELECT to define the fields and 
to instruct the database to query only the 
required information to meet the end-goals. 
It’s one of the most efficient ways of 
querying since it pulls only thhe ttrpesq:/u/tiroesds k
data and restricts your databaa.csoem /from 
getting burdened. 
3. Create Indexes 
Properly Based on 
Queries
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Create Indexes Properly 
Based on Queries
Indexes are data structures that speed up data 
retrieval operations on a database table. Creating 
useful indexes is a crucial step in 
SQL query performance tuning. Therefore, it’s 
essential to understand the type of queries and the 
frequency with which they run before effihcttiepnst: /i/ntdoesxseks 
are created. You should try to index maaj.ocro mse/arching 
and ordering columns. However, indexing may limit 
the database performance if you upload it constantly 
with UPDATE, INSERT, and DELETE. 
4. Generate an Actual 
Execution Plan
It’s extremely crucial to generate an actual 
execution plan in order to diagnose slow 
queries. You can do this by making use of 
SQL Server Management Studio. Typically, 
the actual execution plans are generated 
after you run the queries. For generating 
this, you need to click on “Database Engine 
Query”, that can be found on the SQL 
Server Management Studio Toolbar. Then, 
enter the query and on the Query menu, 
click on “Include Actual Executionh Pttlpasn:”/./ tossk
Now, you can run the query by ac.lcicokmin/g on 
the “Execute” toolbar button or by pressing 
F5. Once you have done this, the execution 
plan will be displayed in the results pane by 
the SQL Server Management Studio under 
the “Execution Pane” tab. 
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5. Avoid Correlated 
SQL Subqueries
Correlated SQL subqueries are those that 
run row-by-row; once for each row 
returned by the outer query which in turn, 
minimizes SQL query performance. Also, 
it uses values from the parent query. Most 
of the new SQL developers are often 
found to structure their queries with 
these correlated SQL queries as it’s an 
easy route. 
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Avoid Correlated SQL 
Subqueries
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6. Wisely Use 
Temporary Tables
Undoubtedly, it is great to use 
temporary tables, but they 
exponentially increase the complexity of 
a query. Therefore, you must avoid 
using temp tables when you can write 
your code simple. However, you can use 
them as intermediaries when you have 
to deal with a stored procedure that is 
difficult to be handled with a single 
query. Here, temp tables canh ttppus:t/ /tyoossukr 
problem to an end. a.com/
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In a 
Nutshell
SQL performance tuning is crucial to keep 
your database healthy. However, it’s not 
easier to accomplish the task. The 
performance of the SQL queries is entirely 
dependent on several factors such as the 
database model you use, the kind of data 
that you require fetching, and more. 
Therefore, if you are searching for a trusted 
company that focuses on rendering 
solutions to SQL and database phetrtfposrm://atonscsek 
tuning, you can browse thae. combr/illiant 
offerings of Tosska Technologies Limited. 
We are one of the very companies that use 
artificial intelligence technology to solve 
various database performance problems. 
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