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Fiverr Pro
English
$
USD
I will write custom sql queries for your database
About this Gig
CUSTOM SQL QUERIES WRITTEN AND DELIVERED IN 24 HOURS
Struggling with complex queries, slow database performance,
or just need clean SQL written fast? I'll write custom,
optimized, well-commented SQL for any database delivered
the same day.
Whether you need a simple SELECT or a complex multi-table
report with stored procedures I've got you covered.
️ WHAT I CAN WRITE FOR YOU:
SELECT, INSERT, UPDATE, DELETE queries
Complex JOINs (INNER, LEFT, RIGHT, FULL)
Subqueries and CTEs (Common Table Expressions)
Aggregations, GROUP BY, HAVING clauses
Stored procedures and functions
Triggers and views
Database schema design
Query optimization and performance tuning
Data cleaning and deduplication
Report queries for dashboards
️ DATABASES I WORK WITH:
MySQL / MariaDB
PostgreSQL
SQLite
Microsoft SQL Server
Oracle SQL
BigQuery
Any standard SQL database
WHAT YOU GET:
Clean, readable, well-commented SQL
Explanation of what each query does
Sample output showing expected results
Tested and verified queries
Fast delivery usually same day
Revisions until you are 100% satisfied
WHY CHOOSE ME:
I write SQL that actually works and is easy to understand.
FAQ
Q: What databases do you work with?
A: MySQL, PostgreSQL, SQLite, SQL Server, Oracle, BigQuery, and any standard SQL database. Just tell me which one you use when you order.
Q: Do I need to share my actual database?
A: No. Just tell me your table names, column names, and what you need the query to do. A sample of a few rows of data helps but is never required.
Q: Can you fix a query I already have?
A: Absolutely. Share the existing query and describe what it should do differently — fixing and optimizing existing queries is one of the most common things I help with.
Q: Can you optimize a slow query?
A: Yes. Share the query and I will rewrite it with proper indexing suggestions, optimized JOINs, and efficient structure to speed it up.
Q: What if I don't know my table structure well?
A: Just describe what data you have in plain English — I will figure out the structure and write the query accordingly.
Q: Can you design a database schema from scratch?
A: Yes — this is included in the Premium package. Tell me what your application needs to store and I will design a clean, normalized schema with all the right relationships.
Q: Will you explain what the query does?
A: Every delivery includes a plain English explanation of exactly what the query does line by line — no guessing required.
Q: What if the query doesn't work on my database?
A: That is covered under revisions. Send me the error message and I will fix it immediately.
Q: Can you write stored procedures and triggers?
A: Yes — included in the Premium package. Just describe the logic and I will write clean, well-commented procedures.
Q: How do you handle large or complex databases?
A: The more detail you give me about your structure the better. For complex schemas message me before ordering and I will confirm the right package for your project. Gig Tags sql, mysql, postgresql, database, sql queries, query optimization, stored procedures, database design, sql server, data anal
