I will write optimized SQL queries and build database reports

I will write optimized SQL queries and build database reports that return the right numbers fast, so your dashboards, exports, and decisions stop waiting on slow or wrong data.

If you have a database full of data but struggle to pull clean, trustworthy answers out of it, I can help. I write production-grade SQL, tune slow queries, and turn raw tables into readable reports your team can actually use.

What you get

This is a hands-on SQL and reporting service. Depending on the plan you choose, you can expect concrete, usable deliverables such as:

• Custom SQL queries written to your exact requirements, covering joins, aggregations, window functions, CTEs, subqueries, and conditional logic.
• Query optimization and tuning for queries that already work but run too slowly, including EXPLAIN/EXPLAIN ANALYZE review, index recommendations, and rewrites.
• Database reports built as reusable SQL, parameterized views, or saved query sets that produce summaries, breakdowns, trends, cohort counts, and KPI rollups.
• Stored procedures, views, and functions to package recurring logic so your team can reuse it without re-deriving the SQL each time.
• Clear, commented SQL so you (or the next developer) understand what each block does and why, rather than inheriting a black box.
• A short written walkthrough explaining the logic, assumptions, edge cases, and how to run or schedule each deliverable.
• Validation of results against sample rows or expected totals so you can trust the output before it reaches a stakeholder.

I work with relational databases including PostgreSQL, MySQL/MariaDB, SQL Server (T-SQL), SQLite, and cloud warehouses such as BigQuery, Snowflake, and Amazon Redshift. Tell me your engine up front and I'll write dialect-correct SQL for it.

Plans

Tier	Scope	Best for
Basic	A single focused query OR one query optimization, with comments and a brief explanation of the logic.	A specific question, a slow query, or a one-off pull.
Standard	A small set of related queries OR a complete report (multiple metrics, grouped breakdowns, views), plus indexing notes and validation against sample data.	A recurring report, a dashboard data layer, or several connected queries.
Premium	A full reporting package: multiple reports, parameterized views/stored procedures, optimization pass on existing queries, documentation, and a handoff call.	A reporting overhaul, analytics layer, or ongoing data-product foundation.

Every tier includes commented SQL, a written explanation, and revisions until the output matches the agreed requirements. If your needs sit between tiers, message me and I'll scope an honest custom quote.

How it works

1. You share the request. Describe what you need: the question to answer, the report to build, or the slow query to fix. Include your database engine and version.
2. You give me access to the schema. Ideally the table structures (CREATE statements or a schema dump), a few sample rows, and any existing queries. I can work from an anonymized or scrubbed copy if your data is sensitive.
3. I confirm scope and assumptions. Before writing, I restate what I understand the deliverable to be, flag any ambiguities (date boundaries, time zones, how to treat NULLs, deduplication rules), and confirm the expected output shape.
4. I write and test the SQL. I develop against your sample data, check edge cases, and verify the results match expected totals or known rows.
5. I deliver with documentation. You receive the SQL, comments inline, a plain-language explanation, and notes on indexes, performance, or how to schedule it.
6. We refine. You review against real data and request adjustments. I revise until the deliverable is correct and clear.

Why choose this

I focus on SQL and reporting specifically, not a generic "I'll do anything data" pitch. That means I sweat the details that actually break reports in production: time-zone handling, off-by-one date ranges, double-counting from fan-out joins, NULL-driven aggregation surprises, and indexes that look fine until the table grows.

Optimization here means measured improvement, not guesswork. I read the query plan, identify the real bottleneck (a missing index, a non-sargable filter, an accidental cross join, a function wrapped around an indexed column), and rewrite with the trade-offs explained. You get a faster query and an understanding of why it was slow.

I also write SQL that other humans can maintain. Clever one-liners that nobody can edit six months later are a liability. My deliverables are readable, commented, and structured so your team can extend them.

Who it's for / use cases

• Founders and operators who need a clean weekly or monthly metrics report straight from the database.
• Analysts and BI teams who want a reliable SQL data layer feeding Tableau, Power BI, Looker, Metabase, or a custom dashboard.
• Developers who are strong in their stack but want a second set of eyes on a gnarly query or a performance problem.
• Startups building their first analytics layer who need cohort, retention, funnel, or revenue queries done right.
• Agencies and SaaS teams that need recurring client or product reports packaged as reusable views and procedures.

Typical jobs include revenue and MRR breakdowns, user cohort and retention analysis, funnel and conversion counts, inventory and order reports, data-quality audits, deduplication queries, and slow-query rescue.

FAQ

Q: Which databases do you support? PostgreSQL, MySQL/MariaDB, SQL Server (T-SQL), SQLite, and warehouses like BigQuery, Snowflake, and Redshift. Tell me your engine and version so I write the correct dialect and use features your version actually supports.

Q: Do you need access to my live production database? No. I prefer to work from your schema (CREATE statements), a sample of rows, and existing queries. A scrubbed or anonymized copy is ideal. I do not need, and would rather not have, direct production credentials.

Q: My data is sensitive. Can you handle that? Yes. Send anonymized or masked sample data, or just the schema with fake rows that match real shapes. The SQL I write runs the same against your real data once you deploy it.

Q: Can you make my existing slow query faster? Often, yes. I review the execution plan, find the actual bottleneck, and rewrite or recommend indexes. I'll tell you honestly if the limit is hardware or data volume rather than the query itself, and what a realistic gain looks like.

Q: Will I understand the SQL you deliver? That's the goal. Every deliverable comes commented, with a plain-language explanation of the logic, assumptions, and how to run it. You won't be left with an unmaintainable black box.

Q: Can you build reports that run automatically? I can deliver the SQL as views, stored procedures, or scheduled-job-ready scripts, and explain how to wire them into your scheduler, cron, or warehouse's native scheduling. Setting up the scheduling infrastructure itself can be scoped on the Premium tier.

Q: What do you need from me to start? The specific question or report you want, your database engine and version, the relevant table schemas, a few sample rows, and any existing queries. The more concrete the expected output, the faster and more accurate the result.

Q: How many revisions are included? I revise until the deliverable matches the requirements we agreed on at the start. Changes that expand the original scope (new metrics, new tables, additional reports) are quoted separately, and I'll always tell you before any extra work.