diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/ddl.sgml | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml index 1925ff45509..85e43589882 100644 --- a/doc/src/sgml/ddl.sgml +++ b/doc/src/sgml/ddl.sgml @@ -4421,8 +4421,12 @@ EXPLAIN SELECT count(*) FROM measurement WHERE logdate >= DATE '2008-01-01'; query, partition pruning is performed whenever one of the execution parameters being used by partition pruning changes. Determining if partitions were pruned during this phase requires - careful inspection of the <literal>nloops</literal> property in - the <command>EXPLAIN ANALYZE</command> output. + careful inspection of the <literal>loops</literal> property in + the <command>EXPLAIN ANALYZE</command> output. Subplans + corresponding to different partitions may have different values + for it depending on how many times each of them was pruned during + execution. Some may be shown as <literal>(never executed)</literal> + if they were pruned every time. </para> </listitem> </itemizedlist> |