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-rw-r--r--doc/src/sgml/amcheck.sgml7
1 files changed, 5 insertions, 2 deletions
diff --git a/doc/src/sgml/amcheck.sgml b/doc/src/sgml/amcheck.sgml
index 8bb60d5c2da..627651d8d4a 100644
--- a/doc/src/sgml/amcheck.sgml
+++ b/doc/src/sgml/amcheck.sgml
@@ -112,7 +112,7 @@ ORDER BY c.relpages DESC LIMIT 10;
<varlistentry>
<term>
- <function>bt_index_parent_check(index regclass, heapallindexed boolean) returns void</function>
+ <function>bt_index_parent_check(index regclass, heapallindexed boolean, rootdescend boolean) returns void</function>
<indexterm>
<primary>bt_index_parent_check</primary>
</indexterm>
@@ -126,7 +126,10 @@ ORDER BY c.relpages DESC LIMIT 10;
argument is <literal>true</literal>, the function verifies the
presence of all heap tuples that should be found within the
index, and that there are no missing downlinks in the index
- structure. The checks that can be performed by
+ structure. When the optional <parameter>rootdescend</parameter>
+ argument is <literal>true</literal>, verification re-finds
+ tuples on the leaf level by performing a new search from the
+ root page for each tuple. The checks that can be performed by
<function>bt_index_parent_check</function> are a superset of the
checks that can be performed by <function>bt_index_check</function>.
<function>bt_index_parent_check</function> can be thought of as