Question about heap_inplace_update and VACUUM behavior

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    Shiju Sivadazz<shijusivadazz86@gmail.com>
    Mar 11, 2026, 1:45 PM UTC
    Hello PostgreSQL Hackers,
    I am currently exploring the PostgreSQL source code to better understand
    the internal storage and update mechanisms. While reviewing the heap access
    methods, I noticed the function heapinplaceupdate() in the source code
    with the following comment:
    /*
    * heapinplaceupdate - deprecated
    *
    * This exists only to keep modules working in back branches. Affected
    * modules should migrate to systableinplaceupdate_begin().
    */