Source: toastinfo Section: database Priority: optional Maintainer: Debian PostgreSQL Maintainers Uploaders: Christoph Berg , Build-Depends: architecture-is-64-bit , debhelper-compat (= 13), postgresql-all , postgresql-server-dev-all, Standards-Version: 4.7.0 Rules-Requires-Root: no Homepage: https://github.com/df7cb/toastinfo Vcs-Browser: https://github.com/df7cb/toastinfo Vcs-Git: https://github.com/df7cb/toastinfo.git Package: postgresql-17-toastinfo Architecture: any Depends: ${misc:Depends}, ${postgresql:Depends}, ${shlibs:Depends}, Description: Show storage structure of varlena datatypes in PostgreSQL This PostgreSQL extension exposes the internal storage structure of variable-length datatypes, called varlena. . The function pg_toastinfo describes the storage form of a datum: . * null for NULLs * ordinary for non-varlena datatypes * short inline varlena for varlena values up to 126 bytes (1 byte header) * long inline varlena, (un)compressed for varlena values up to 1GiB (4 bytes header) * toasted varlena, (un)compressed for varlena values up to 1GiB stored in TOAST tables . The function pg_toastpointer returns a varlena's chunk_id oid in the corresponding TOAST table. It returns NULL on non-varlena input.