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Commit863fad1

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Document relminmxid and datminmxid
I introduced these new fields in0ac5ad5 but neglected to add themto the system catalogs section of the docs.Per Thom Brown in messageCAA-aLv7UiO=Whiq3MVbsEqSyQRthuX8Tb_RLyBuQt0KQBp=6EQ@mail.gmail.com
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‎doc/src/sgml/catalogs.sgml

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</entry>
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</row>
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<row>
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<entry><structfield>relminmxid</structfield></entry>
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<entry><type>xid</type></entry>
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<entry></entry>
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<entry>
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All multitransaction IDs before this one have been replaced by a
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transaction ID in this table. This is used to track
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whether the table needs to be vacuumed in order to prevent multitransaction ID
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ID wraparound or to allow <literal>pg_clog</> to be shrunk. Zero
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(<symbol>InvalidTransactionId</symbol>) if the relation is not a table.
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</entry>
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</row>
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<row>
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<entry><structfield>relacl</structfield></entry>
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<entry><type>aclitem[]</type></entry>
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</entry>
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</row>
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<row>
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<entry><structfield>datminmxid</structfield></entry>
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<entry><type>xid</type></entry>
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<entry></entry>
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<entry>
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All multitransaction IDs before this one have been replaced with a
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transaction ID in this database. This is used to
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track whether the database needs to be vacuumed in order to prevent
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transaction ID wraparound or to allow <literal>pg_clog</> to be shrunk.
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It is the minimum of the per-table
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<structname>pg_class</>.<structfield>relminmxid</> values.
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</entry>
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</row>
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<row>
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<entry><structfield>dattablespace</structfield></entry>
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<entry><type>oid</type></entry>

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