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English
$
USD
I will fix sql query errors and incorrect report totals
About this Gig
Your SQL runs, but the totals don't add up? Or an error is stopping the query entirely? I'll help you find the cause and fix it.
How I can help
- Fix query errors, joins, filters and grouping
- Resolve duplicated rows, missing records and wrong counts or sums
- Make the corrected SQL readable and explain what changed
You receive the corrected query and checks against the expected sample results.
The $25 starter covers one SELECT query using up to three tables and one result issue, with one revision. Performance tuning, extra queries and production changes need a separate quote.
I'm Asaf, with five years of data engineering experience at Mobileye and BSc/MSc degrees in Computer Science.
Send the query, database type, table definitions and a small anonymized example of the result you want. I'll confirm compatibility and scope. Custom work has no fixed row cap; complexity determines the quote. Custom offers use agreed timing; direct orders follow the displayed package.
I use AI-assisted tools with your permission and verify the result. The gallery shows my own executed fictional example.
Database type:
Relational database
Platform:
MySQL
•
PostgreSQL
•
SQLite
Expertise:
SQL
•
DQL
FAQ
What do I receive for $25?
A corrected SELECT query using up to three tables, fixing one result issue. I include checks against the agreed sample, a clear explanation and one revision within this scope.
Which SQL databases do you support?
The gig lists SQLite, PostgreSQL and MySQL. Tell me your database type and version so I can confirm syntax compatibility and how we will test the result.
Do you need access to my production database?
Usually the query, table definitions and anonymized sample data are enough. Do not send passwords. Live access, database changes and deployment need a separately agreed scope.
Can you handle larger queries or performance problems?
Send the query and sample first for a custom quote. Custom work has no fixed row cap; complexity and verification affect the price. Performance tuning and additional reports are outside the starter scope.
Can you review my request before I order?
Yes. Send a small sample and the result you need. I'll review the work and send a custom quote with agreed scope and timing. Direct orders use the package and deadline displayed by Fiverr.
