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Fiverr Pro
English
$
USD
I will write, fix, and optimize sql queries for mysql postgresql and sql server
Backend and SQL Expert, High Performance Databases and APIs
I help startups, agencies, and growing businesses build reliable backends, high-performance databases, and scalable web systems.
I’m a Level 2 Fiverr seller with 220+ five-star reviews, specializing ...
Level 2
Has met high performance criteria and has a proven track record for meeting client expectations.
About this Gig
Are you facing slow SQL queries, incorrect results, or complex reporting issues?
I am a Level 2 Fiverr seller with 220+ five-star reviews, specializing in writing, fixing, and optimizing SQL queries for MySQL, PostgreSQL, and SQL Server.
I can help you with:
- Writing complex SQL queries from requirements
- Fixing incorrect joins, group by, subqueries, and window functions
- Query performance optimization and indexing guidance
- Debugging existing queries and stored procedures
- Reports, dashboards, and data validation queries
I focus on accuracy, performance, and clean SQL logic not trial-and-error fixes. Your data integrity and production safety always come first.
Please message me before placing an order to review your requirements and avoid misunderstandings.
Platform:
MySQL
•
PostgreSQL
•
SQLite
•
SQL Server
Expertise:
SQL
•
DDL
•
DML
•
Query optimization
My Portfolio
Other Databases Services I Offer
FAQ
Do you work with existing databases?
Yes, I can analyze and fix existing SQL queries without modifying your database structure unless approved.
Can you optimize slow queries?
Yes. I analyze execution logic and suggest optimizations, including indexing where applicable.
Do you support PostgreSQL?
Yes. I work with MySQL, PostgreSQL, and SQL Server.
Reviews
152 reviews for this Gig
| (148) | ||
| (3) | ||
| (1) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
M marcusheiner
Australia
This was our first experience with Fiverr, so we weren't sure what to expect. Faisal has been proactive and we're really happy with the work he has provided... We're booking him in for further work right now!
Up to $50
Price
3 days
Duration
Helpful?M mjsport
Repeat Client
United Kingdom
Fantastic service
$100-$200
Price
6 days
Duration
Helpful?C cedricmalong
United Kingdom
The work was excellent. He understood my request immediately and delivered promptly. I will contact him again for my future projects.
Up to $50
Price
1 day
Duration
Helpful?J 
justin559
Repeat Client
United States
This is by far the best person you could work with... truly amazed every time we work together on a project.
Up to $50
Price
10 days
Duration
Helpful?J justin559
Repeat Client
United States
Just one of the best people you could find on Fiverr. Deep knowledge and willing to go above and beyond. Hire him.. you won't regret it.
Up to $50
Price
8 days
Duration
Helpful?
Reviews
152 reviews for this Gig
| (148) | ||
| (3) | ||
| (1) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
M marcusheiner
Australia
This was our first experience with Fiverr, so we weren't sure what to expect. Faisal has been proactive and we're really happy with the work he has provided... We're booking him in for further work right now!
Up to $50
Price
3 days
Duration
Helpful?M mjsport
Repeat Client
United Kingdom
Fantastic service
$100-$200
Price
6 days
Duration
Helpful?C cedricmalong
United Kingdom
The work was excellent. He understood my request immediately and delivered promptly. I will contact him again for my future projects.
Up to $50
Price
1 day
Duration
Helpful?J justin559
Repeat Client
United States
This is by far the best person you could work with... truly amazed every time we work together on a project.
Up to $50
Price
10 days
Duration
Helpful?J justin559
Repeat Client
United States
Just one of the best people you could find on Fiverr. Deep knowledge and willing to go above and beyond. Hire him.. you won't regret it.
Up to $50
Price
8 days
Duration
Helpful?
