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-rw-r--r--doc/src/sgml/fdwhandler.sgml4
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/src/sgml/fdwhandler.sgml b/doc/src/sgml/fdwhandler.sgml
index d0b5951019b..94263c628fa 100644
--- a/doc/src/sgml/fdwhandler.sgml
+++ b/doc/src/sgml/fdwhandler.sgml
@@ -665,7 +665,9 @@ ExecForeignBatchInsert(EState *estate,
<para>
Note that this function is also called when inserting routed tuples into
- a foreign-table partition. See the callback functions
+ a foreign-table partition or executing <command>COPY FROM</command> on
+ a foreign table, in which case it is called in a different way than it
+ is in the <command>INSERT</command> case. See the callback functions
described below that allow the FDW to support that.
</para>