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We really only need the foreign key constraint's OID and the query type code to uniquely identify each plan we are caching for FK checks. The other stuff that was in the struct had no business being used as part of a hash key, and was all just being copied from struct RI_ConstraintInfo anyway. Get rid of the unnecessary fields, and readjust various function APIs to make them use RI_ConstraintInfo not RI_QueryKey as info source. I'd be surprised if this makes any measurable performance difference, but it certainly feels cleaner. |
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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: http://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. Changes between all PostgreSQL releases are recorded in the file HISTORY. 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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.