You will get clean, efficient SQL queries that pull exactly the data you need
Project details
You will get clean, efficient SQL queries that pull exactly the data you need — no more digging through spreadsheets or guessing at numbers. I work daily as a Data Analyst conducting quality assurance on large-scale datasets used by millions of users, so I write queries that are accurate, well-structured, and easy to hand off to your team. Whether you need a simple lookup or a complex query involving joins, aggregations, and CTEs, I'll write it clearly and explain what it does. Send me your schema or a sample of your data and what you're trying to find, and I'll confirm exactly what's possible before you commit.
Database Type
MySQL, MS SQL, OracleWhat's included
| Service Tiers |
Starter
$25
|
Standard
$55
|
Advanced
$110
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 5 days |
Number of Revisions | 1 | 2 | 2 |
Number of Queries | 2 | 5 | 10 |
Query Debugging | - | ||
Query Optimization | - | - | |
Query Scheduling | - | - | - |
Query Analysis | - | ||
Source Code |
Frequently asked questions
About Ricardo
Power BI & Tableau Dashboards | SQL Developer & Data Analyst
Saint Helens, United Kingdom - 11:49 am local time
I currently work as a Data Analyst conducting quality assurance on large-scale datasets used by millions of users, and I've spent the past two years handling data and operations for logistics companies — including processing 300+ records monthly and resolving data discrepancies that directly affected client billing and reporting accuracy. I'm also completing a Computer Science degree, which keeps my technical skills current alongside the practical experience.
How I can help your business:
Dashboard Development — Interactive Power BI and Tableau reports built around the KPIs that actually matter to you
SQL Database Querying — Efficient queries for MySQL, SQL Server, and BigQuery, including joins, aggregations, and CTEs
Data Cleaning & Pipelines — Turning messy, inconsistent, or scattered data into something reliable
Data Quality Assurance — Verifying accuracy at scale, a skill from my current professional role
Send me a sample of your data and what you're trying to learn from it — I'll tell you exactly what's achievable before you commit to anything.
Steps for completing your project
After purchasing the project, send requirements so Ricardo can start the project.
Delivery time starts when Ricardo receives requirements from you.
Ricardo works on your project following the steps below.
Revisions may occur after the delivery date.
Review your data and requirements
I'll review what you've sent and confirm exactly what the query needs to return before writing any code.
Write and test the query
I'll write the SQL query, test it against your data structure, and check the results for accuracy.