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SQL Query Writing and Database Help: Reports, Joins and Performance Fixes

    4.80 /5.0
    User review
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Get the data you need from your database

I write and fix SQL so you can get accurate reports.

What is included

  • Queries written to your questions
  • Joins, grouping and filtering
  • Explanation of how each query works
  • Performance tips for slow queries

How it works

Send the table structure (no private data needed) and what you want to find out. I send the queries with explanations.

Frequently asked questions

Which databases?

MySQL, PostgreSQL, SQL Server and SQLite.

Usually not. Table structure and sample data are enough.

Not unless you ask. I normally write read-only queries.

I explain each query, but this is not a full training course.

5 Client reviews

( 4.80 Overall rating )
5.0
(1 month ago)

Sample review: Nathan Price, Australia. Needed this done properly and it was. Code was clean, commented, and ran without a single issue on my side.

5.0
(3 months ago)

Sample review: Holly Spencer, United Kingdom. Tested everything before handoff and walked me through it. Saved my team days of effort.

4.0
(5 months ago)

Sample review: Sophie Turner, United States. Tested everything before handoff and walked me through it. Saved my team days of effort.

5.0
(6 months ago)

Sample review: Laura Bishop, United States. Tested everything before handoff and walked me through it. Saved my team days of effort.

5.0
(6 months ago)

Sample review: Hailey Stone, United States. Second time ordering here. Same quality, same speed. My go-to for technical work now.