You will get I will write and optimize your SQL queries
Project details
Need help writing or optimizing SQL queries? I create clean, efficient queries and improve the performance of existing ones. I work mainly with SQL Server and Oracle, but can support any SQL-based system.
I can help you with:
• Writing SELECT, INSERT, UPDATE, DELETE queries
• Optimizing slow or heavy queries
• Fixing SQL errors and improving logic
• Creating or improving stored procedures, views, and functions
• Queries for reports, dashboards, and analytics
• Complex joins, subqueries, CTEs, aggregations
• Index and filter improvements for better performance
What you get:
• Clean, well-structured SQL
• Faster, more efficient queries
• Clear explanation of the fix
• Reusable scripts
• Fast communication and on-time delivery
Examples:
• Slow report queries
• Incorrect or duplicate data from joins
• Procedures failing due to logic or syntax errors
• Queries that need conversion between databases
This project covers SQL query writing and optimization. For full schema design or large migrations, we can discuss a custom project.
I can help you with:
• Writing SELECT, INSERT, UPDATE, DELETE queries
• Optimizing slow or heavy queries
• Fixing SQL errors and improving logic
• Creating or improving stored procedures, views, and functions
• Queries for reports, dashboards, and analytics
• Complex joins, subqueries, CTEs, aggregations
• Index and filter improvements for better performance
What you get:
• Clean, well-structured SQL
• Faster, more efficient queries
• Clear explanation of the fix
• Reusable scripts
• Fast communication and on-time delivery
Examples:
• Slow report queries
• Incorrect or duplicate data from joins
• Procedures failing due to logic or syntax errors
• Queries that need conversion between databases
This project covers SQL query writing and optimization. For full schema design or large migrations, we can discuss a custom project.
Database Type
MySQL, MS SQL, Oracle, SQLite, PostgreSQLWhat's included
| Service Tiers |
Starter
$20
|
Standard
$50
|
Advanced
$100
|
|---|---|---|---|
| Delivery Time | 1 day | 2 days | 3 days |
Number of Revisions | 1 | 2 | 3 |
Number of Tables Added | 0 | 0 | 0 |
Schema Diagram | - | - | - |
Permissions Setup | - | - | - |
Import/Export Data | - | - | - |
Admin Panel Setup | - | - | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$10 - $20
Additional Revision
+$10
Detailed Query Documentation
+$15
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AW
Allison D W.
Dec 18, 2025
C# / .NET / SQL Jr. Developer
Ibis is a great guy and we really really appreciated his working with us.
About Ibis
Junior Developer | C# | .NET | SQL | APIs | Automatizaciones
Santo Domingo Este, Dominican Republic - 2:52 am local time
I help clients fix errors, automate tasks, build simple APIs, clean data, and create small tools or scripts that save time and money.
Even if the job is small, complex or urgent — I can help you with:
✔ Fixing C# / .NET / SQL errors
✔ Writing database queries (SQL Server / Oracle)
✔ Creating automations and scripts
✔ Connecting APIs
✔ Cleaning and organizing Excel/CSV data
✔ Creating mini-APIs or backend functions
✔ Debugging and performance fixes
And also:
✔ Migrations (from .NET Framework to .NET 6/7/8)
✔ Full project creation from scratch
✔ Setting up Clean Architecture + CQRS
✔ Refactoring or modernizing your code
✔ Connecting applications to databases (Oracle, SQL Server)
✔ Technical support for ongoing systems
No matter the project size, I focus on clarity, fast delivery, and reliable results.
If you need someone who communicates clearly and can take care of technical tasks efficiently — I'm here to help.
Let’s work together.
Steps for completing your project
After purchasing the project, send requirements so Ibis can start the project.
Delivery time starts when Ibis receives requirements from you.
Ibis works on your project following the steps below.
Revisions may occur after the delivery date.
I review your requirements and clarify details
I check your error, expected result, tables, and sample data. If needed, I ask quick questions to ensure accuracy.
I write or optimize your SQL queries
I create or refine your SQL queries, test them with sample data, and ensure they return the correct output efficiently.