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TIDStore is a data structure designed to efficiently store large sets of TIDs. For TID storage, it employs a radix tree, where the key is a block number, and the value is a bitmap representing offset numbers. The TIDStore can be created on a DSA area and used by multiple backend processes simultaneously. There are potential future users such as tidbitmap.c, though it's very likely the interface will need to evolve as we come to understand the needs of different kinds of users. For example, we can support updating the offset bitmap of existing values. Currently, the TIDStore is not used for anything yet, aside from the test code. But an upcoming patch will use it. This includes a unit test module, in src/test/modules/test_tidstore. Co-authored-by: John Naylor Discussion: https://postgr.es/m/CAD21AoAfOZvmfR0j8VmZorZjL7RhTiQdVttNuC4W-Shdc2a-AA%40mail.gmail.com
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at:
https://www.postgresql.org/docs/devel/
In particular, information about building PostgreSQL from the source
code can be found at:
https://www.postgresql.org/docs/devel/installation.html
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.