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Document that ALTER TABLE .. TYPE removes statistics

author Alvaro Herrera <alvherre@alvh.no-ip.org>

Fri, 5 Nov 2021 15:09:31 +0000 (12:09 -0300)

committer Alvaro Herrera <alvherre@alvh.no-ip.org>

Fri, 5 Nov 2021 15:09:31 +0000 (12:09 -0300)

Co-authored-by: Nikolai Berkoff <nikolai.berkoff@pm.me>
Discussion: https://postgr.es/m/vCc8XnwDmlP4ZnHBQLIVxzD405BiYHVC9qZlhIF7IsfxK0gC9mZ4PUUOH0-3y6kv5p-87-3_ljqT1KvQVAnb8OoWhPU3kcqWn2ZpmxRBCQg=@pm.me

doc/src/sgml/ref/alter_table.sgml patch | blob | blame | history

diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml

index 81291577f831d914514696260b6031dc9f3cb9c2..2d639a66af0e318cc0be23b92969a4d2a948a328 100644 (file)

--- a/doc/src/sgml/ref/alter_table.sgml

+++ b/doc/src/sgml/ref/alter_table.sgml

@@ -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>

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