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FORMAT_VERSION

sqlrite::sql::pager::header

Constant FORMAT_VERSION 

Source 
pub const FORMAT_VERSION: u16 = 3;
Expand description

On-disk format revision. Bump when the page layout changes incompatibly.

History:

  • Version 1 (Phases 2 / 3a / 3b): schema catalog and table data were opaque bincode blobs chained across typed payload pages.
  • Version 2 (Phases 3c / 3d): tables are stored as cell-based B-Trees; the schema catalog is itself a table called sqlrite_master with four columns (name, sql, rootpage, last_rowid).
  • Version 3 (Phase 3e): sqlrite_master gains a type column (first), distinguishing 'table' and 'index' rows; secondary indexes persist as their own cell-based B-Trees whose cells use the new KIND_INDEX format.