
Internal Datatypes and Record Format in SQLite
Hello, I'm Maneshwar. I'm working on git-lrc : a Git hook for Checking AI generated code. Internal Datatypes and Record Format So far, we’ve seen how the VM executes instructions, manages cursors, and moves through bytecode programs. Today we zoom into something even more fundamental: What exactly is a value inside the VM? Before a value is written to disk, before it is compared in a WHERE clause, before it is returned through sqlite3_step() , it exists inside the VM as a memory object. Understanding that representation is key to understanding SQLite’s flexibility. Internal Datatypes The VM uses an arbitrary number of numbered memory locations (registers). Each register holds exactly one value at a time. Every value processed by the VM must belong to one of five primitive storage types: INTEGER – a signed integer REAL – a signed floating-point number TEXT – a character string BLOB – a byte image NULL – the SQL NULL There are no other primitive types inside SQLite’s execution engine. Ev
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