diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/postgres-fdw.sgml | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/doc/src/sgml/postgres-fdw.sgml b/doc/src/sgml/postgres-fdw.sgml index b31f3731e49..a6c56d1f634 100644 --- a/doc/src/sgml/postgres-fdw.sgml +++ b/doc/src/sgml/postgres-fdw.sgml @@ -488,8 +488,10 @@ <filename>postgres_fdw</> attempts to optimize the query execution by sending the whole query to the remote server if there are no query <literal>WHERE</> clauses that cannot be sent to the remote server, - no local joins for the query, and no row-level local <literal>BEFORE</> or - <literal>AFTER</> triggers on the target table. In <command>UPDATE</>, + no local joins for the query, no row-level local <literal>BEFORE</> or + <literal>AFTER</> triggers on the target table, and no + <literal>CHECK OPTION</> constraints from parent views. + In <command>UPDATE</>, expressions to assign to target columns must use only built-in data types, <literal>IMMUTABLE</> operators, or <literal>IMMUTABLE</> functions, to reduce the risk of misexecution of the query. |