How would you optimize a slow SQL query?

Answer Posted / hr@tgksolutions.com

• Use EXPLAIN PLAN to analyze query performance.
• Add indexes where needed.
• Avoid using SELECT *; instead, select specific columns.
• Use proper JOINs and avoid unnecessary computations.
• Optimize queries using caching and denormalization if necessary.

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What do you mean by a deadlock?

736


How to use select statement to count the number of rows in oracle?

757


How does propagation differ between Advanced Replication and Snapshot Replication (read-only)?

2033


How do we get field details of a table?

722


Whether any commands are used for months calculation? If so, what are they?

825


Why we use bulk collect in oracle?

732


How to create a new tablespace in oracle?

738


What are the limitations of check constraint?

772


What is the usage of synonyms?

810


What is transaction control statement and how many types of transaction control statement in Oracle?

805


Can we convert a date to char in oracle and if so, what would be the syntax?

761


How to name query output columns in oracle?

903


What is define in oracle?

797


How many anonymous blocks can be defined?

798


What happens to indexes if you drop a table?

912