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When using tableam ExecFetchSlotHeapTuple() might return a separately
allocated tuple. We could use the shouldFree argument to explicitly
free it, but it seems more robust to to protect
Also add a CHECK_FOR_INTERRUPTS() after each tuple. It's likely that
each AM has (heap does) a CFI somewhere in the relevant path, but it
seems more robust to have one in validateForeignKeyConstraint()
itself.
Note that this only affects the cases that couldn't be optimized to be
verified with a query.
Author: Andres Freund
Reviewed-By: Tom Lane (in an earlier version)
Discussion:
https://postgr.es/m/19030.1554574075@sss.pgh.pa.us
https://postgr.es/m/CAKJS1f_SHKcPYMsi39An5aUjhAcEMZb6Cx1Sj1QWEWSiKJkBVQ@mail.gmail.com
https://postgr.es/m/20180711185628.mrvl46bjgk2uxoki@alap3.anarazel.de
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.