I will write sql queries and extract data from sql server postgresql or mysql

Need help getting the right data from your database? I am a database administrator working with Microsoft SQL Server, PostgreSQL and MySQL.

I can write SQL SELECT queries, filter and sort records, join tables, build summaries and extract results to CSV for use in Excel.

The basic package includes one simple query or one CSV export from up to two tables in a single database, the SQL script, a short explanation and one revision within the original scope. Delivery: 2 days.

Please message me before ordering so we can confirm your database, required output and data volume. Larger reports, complex queries and ongoing DBA support can be scoped separately.

Please provide the table structure, anonymized sample data and an example of the result you need. Only share data you are authorized to use. A sanitized database sample is preferred; production changes and server administration are outside this basic package.