Every piece of data in your system started with an INSERT statement. Mastering this command is the foundation of data generation.
1The Safety of Explicit Columns
Always name your columns. It makes your code self-documenting and resilient to changes in the database schema. It's the difference between 'fragile' code and 'production-grade' code.
2String Handling
Remember to use single quotes (' ') for text values and dates. Numbers don't need them. Forgetting a quote is the #1 cause of SQL syntax errors for beginners.
3Bulk Performance
Executing one massive INSERT with 1,000 rows is significantly faster than executing 1,000 separate INSERT commands. This is because the database only has to 'commit' the transaction once.
