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Document that ALTER TABLE .. TYPE removes statistics

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Co-authored-by: Nikolai Berkoff <nikolai.berkoff@pm.me>
Discussion: https://postgr.es/m/vCc8XnwDmlP4ZnHBQLIVxzD405BiYHVC9qZlhIF7IsfxK0gC9mZ4PUUOH0-3y6kv5p-87-3_ljqT1KvQVAnb8OoWhPU3kcqWn2ZpmxRBCQg=@pm.me
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Alvaro Herrera 2021-11-05 12:09:31 -03:00
parent 105c1de019
commit df80f9da5c
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doc/src/sgml/ref/alter_table.sgml
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@ -198,6 +198,12 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
clause must be provided if there is no implicit or assignment
cast from old to new type.
</para>
<para>
When this form is used, the column's statistics are removed,
so running <link linkend="sql-analyze"><command>ANALYZE</command></link>
on the table afterwards is recommended.
</para>
</listitem>
</varlistentry>