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There wasn't any good reason for a single C function to implement both these SQL functions: it saved very little code overall, and it required significant pushups to re-determine at runtime which case applied. Redoing it as two functions ends up with just slightly more lines of code, but it's simpler to understand, and faster too because we need not repeat syscache lookups on every call. An important side benefit is that this eliminates the only case in which different aliases of the same C function had both anyarray and anyelement arguments at the same position, which would almost always be a mistake. The opr_sanity regression test will now notice such mistakes since there's no longer a valid case where it happens. |
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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. 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/.