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| -rw-r--r-- | doc/src/sgml/ref/create_statistics.sgml | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/src/sgml/ref/create_statistics.sgml b/doc/src/sgml/ref/create_statistics.sgml index e3e5c297ddb..a145c41f04b 100644 --- a/doc/src/sgml/ref/create_statistics.sgml +++ b/doc/src/sgml/ref/create_statistics.sgml @@ -167,6 +167,12 @@ CREATE STATISTICS [ IF NOT EXISTS ] <replaceable class="parameter">statistics_na maintenance. Expression statistics are built automatically for each expression in the statistics object definition. </para> + + <para> + Extended statistics are not currently used by the planner for selectivity + estimations made for table joins. This limitation will likely be removed + in a future version of <productname>PostgreSQL</productname>. + </para> </refsect1> <refsect1 id="sql-createstatistics-examples"> |