Learn SQL Queries Using Your Own Excel Data (Import, Query, Export)
Export an Excel sheet to CSV, import it into FoxSchema's SQL Editor, write real SQL queries and joins against it, then export results back to CSV.
Data Masking for Dev Environments with FoxScript and Faker.js
How to mask sensitive data for dev/staging using FoxSchema's bundled @faker-js/faker import in FoxScript, with deterministic seeding and Server Beam.
Server Insights: Connection Pool, Sessions, and Table Sizes at a Glance
How FoxSchema's Server Insights utility surfaces connection pool health, active sessions, host resources, and table/index sizes per dialect.
Server Beam: Moving Data Between Two Databases with SQL and JavaScript
How FoxSchema's Server Beam moves data across two live database connections using sql.on(alias), bind parameters, and a 20-call-per-run safety cap.
Query Files: Turn a CSV, JSON, or Fixed-Width File Into a Queryable Table
How FoxSchema's Query files utility imports CSV/TSV, JSON, and fixed-width files into a temp SQLite workspace or a saved connection for instant SQL access.
FoxScript: SQL with Embedded JavaScript and Node Code Cells
How FoxScript works: SQL-first documents with @js/@ts/@node code blocks, statement strip, bind-parameter sql tags, and browser vs server execution.
Database Constraints: The Defense Layer We Often Forget
Why CHECK, UNIQUE, FOREIGN KEY, and NOT NULL constraints matter as a last line of defense against concurrency bugs and bad data, alongside app validation.
Table vs View: Performance vs Real-Time Data
Tables vs views compared: indexing, pagination, real-time reporting, and when a view is abstraction rather than a performance win.
Stored Procedures vs ORM: Performance vs Flexibility
Stored procedures vs ORMs: a practical comparison of latency, transactions, consistency, testing, deployment, and horizontal scaling costs.
MySQL to ClickHouse Migration: A Schema-Level Guide
How MySQL and ClickHouse schemas differ: engine families, no indexes/FKs/triggers, Nullable() typing, and what to check before migrating.
