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Quite a few of our built-in system views were not exercised anywhere in the regression tests. This is perhaps not so exciting for the ones that are simple projections/joins of system catalogs, but for the ones that are wrappers for set-returning C functions, the omission translates directly to lack of test coverage for those functions. In many cases, the reason for the omission is that the view doesn't have much to do with any specific SQL feature, so there's no natural place to test it. To remedy that, invent a new script sysviews.sql that's dedicated to testing SRF-based views. Move a couple of tests that did fit this charter into the new script, and add simple "count(*)" based tests of other views within the charter. That's enough to ensure we at least exercise the main code path through the SRF, although it does little to prove that the output is sane. More could be done here, no doubt, and I hope someone will think about how we can test these views more thoroughly. But this is a starting point. Discussion: https://postgr.es/m/19359.1485723741@sss.pgh.pa.us
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/.