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$
USD
I will write sql queries and extract data from mysql databases
Software QA Engineer, Web, API and Database Testing
I am a Software QA Engineer with 6+ years of professional experience in software testing.
I help businesses improve product quality through structured manual testing, API testing, database validation,...
About this Gig
Hi! I am a Software QA Engineer with 6+ years of professional experience working with databases and data validation.
I can help you write, review, and troubleshoot MySQL queries for data extraction and reporting.
What I can help with:
- SELECT queries for data extraction
- Filtering, sorting, and aggregation
- JOIN queries across multiple tables
- INSERT, UPDATE, and DELETE queries when required
- Basic query debugging and logic review
- Data export preparation for CSV or Excel
- Query result validation and data checks
Basic Package:
Covers up to 3 standard MySQL queries or 1 small data extraction task.
Please message me before ordering if your request involves complex stored procedures, database migration, production DBA work, backup/restore, advanced performance tuning, schema redesign, or large-scale data processing.
I will provide clear SQL queries and results based on the agreed requirements and database structure.
Database type:
Non-relational database
•
Relational database
Platform:
MySQL
•
Other
Expertise:
SQL
•
NoSQL
•
DML
•
DQL
FAQ
What information do you need before starting?
Please provide the database structure or relevant table/column information, the expected output, and any sample data or requirements needed for the query.
What is included in the Basic package?
The Basic package covers up to 3 standard MySQL queries or 1 small data extraction task.
Can you work with an existing query?
Yes. I can review and troubleshoot an existing MySQL query and help identify logic issues when the scope is reasonable.
Can you export query results to CSV or Excel?
Yes. I can prepare query results for CSV or Excel export when requested.
Do you handle complex database administration or performance tuning?
Advanced DBA work, complex migrations, backup/restore, schema redesign, and heavy performance tuning are not included in the Basic package. Please message me first for these requests.
