The gp_fastsequence table contains information about append-optimized and column-oriented tables. The last_sequence value indicates maximum row number currently used by the table.

    columntypereferencesdescription
    objidoidpgclass.oidObject id of the pg_aoseg.pg_aocsseg* table used to track append-optimized file segments.
    objmodbigint Object modifier.
    last_sequencebigint The last sequence number used by the object.

    Parent topic: System Catalogs Definitions