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Fiverr Pro
English
$
USD
I will write optimized sql queries and fix database issues
Market Research, Lead Generation, Web Development, Data Visualization
I empower businesses with the strategic insights needed to win. As a Level 2 Seller with 10+ years of experience, I specialize in turning data into a competitive advantage.
My core expertise lies in ...
Level 2
Has met high performance criteria and has a proven track record for meeting client expectations.
Highly Responsive
Known for exceptionally quick replies
About this Gig
Are you looking for a reliable expert to write optimized SQL queries and fix database issues? You've come to the right place!
I'm a professional database developer with extensive experience in SQL development, database design, query optimization, and stored procedures. Whether you're a business owner, student, or developer, I can help you write clean, efficient, high-performance SQL queries across platforms like MySQL, SQL Server, and SQLite.
Services I Offer:
Write and optimize SQL queries (SELECT, INSERT, UPDATE, DELETE)
Debug slow or broken queries
Create stored procedures, functions, views, and triggers
Design and normalize database schemas (1NF to 3NF)
Create ER diagrams and logical schema designs
Fix indexing and performance bottlenecks
Data import/export, user creation, and linking databases
Assist with loops, cursors, and dynamic SQL
Handle school or university SQL query assignments professionally
I've worked on data cleansing, extraction, analysis, and visualization during my career using various tools. Writing SQL is not just a task; it's my core strength.
Before placing your order, please message me to discuss your requirements and avoid cancellations.
Database type:
Relational database
Platform:
MS SQL
•
MySQL
•
PL/SQL
•
SQL Server
Expertise:
ERD
•
SQL
•
Performance
•
Query optimization
My Portfolio
Other Databases Services I Offer
FAQ
What do you need from me to get started?
To begin, I need a clear description of your requirement, access to the database or its structure (tables, sample data), and the expected output/result.
Which database platforms do you support?
I work with MySQL, Oracle, MS SQL Server, and SQLite. Please let me know your platform before placing an order.
Can you help with slow or broken SQL queries?
Absolutely! I specialize in debugging and optimizing SQL queries for performance, indexing, and accuracy.
Do you work with stored procedures, functions, and triggers?
Yes, I can write, debug, and optimize stored procedures, user-defined functions, and database triggers in various SQL platforms.
Can you design a new database from scratch?
Yes! I offer complete database design including ER diagrams, normalized schema, indexing, and permission setup.
What if I don't have technical knowledge?
No problem! Just explain your goal in simple terms. I’ll handle the technical part and guide you through the rest.
Do you handle academic assignments or university SQL tasks?
I support school- and university-level SQL projects, respecting academic integrity and deadlines.
Will I get .sql files with the code?
Yes, you’ll receive well-documented .sql files for all queries, procedures, or database elements delivered.
Can you import/export data or migrate between databases?
Yes, I can help migrate databases, import/export CSV, Excel, or SQL data across supported platforms.
Can we discuss the task before I place an order?
Definitely! Please message me before ordering. I’ll review your needs, suggest the right package, and ensure a smooth process.
Reviews
20 reviews for this Gig
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Rating Breakdown
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- Quality of delivery
- Value of delivery
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joshuacarreo699
Philippines
His really good, and been able to help me beyond his limits, I would work with him again and would love to recommend him!! So Perfect!
Up to $50
Price
1 day
Duration
Helpful?K 
kparedes1
United States
Very high quality
$100-$200
Price
1 day
Duration
Helpful?K kparedes1
United States
Very great work
Up to $50
Price
2 days
Duration
Helpful?D 
drdonelewis
United States
great service
Helpful?A anastassiase325
Estonia
answered quickly on all my questions
E 
Seller's Response
Helpful?
Reviews
20 reviews for this Gig
| (20) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
J joshuacarreo699
Philippines
His really good, and been able to help me beyond his limits, I would work with him again and would love to recommend him!! So Perfect!
Up to $50
Price
1 day
Duration
Helpful?K kparedes1
United States
Very high quality
$100-$200
Price
1 day
Duration
Helpful?K kparedes1
United States
Very great work
Up to $50
Price
2 days
Duration
Helpful?D drdonelewis
United States
great service
Helpful?A anastassiase325
Estonia
answered quickly on all my questions
E Seller's Response
Helpful?
