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With the removal of the old abstime type, there are no longer any cases in this test where we need to use the weaker castcontext-ignoring form of binary coercibility check. (The other major source of such headaches, apparently-incompatible hash functions, is now hashvalidate()'s problem not this test script's problem.) Hence, just use binary_coercible() everywhere, and remove the comments explaining why we don't do so --- which were broken anyway by cda6a8d01. I left physically_coercible() in place but renamed it to better match what it's actually testing, and added some comments. Also, in test queries that have an assumption about the maximum number of function arguments they need to handle, add a clause to make them fail if someday there's a relevant function with more arguments. Otherwise we're likely not to notice that we need to extend the queries. Discussion: https://postgr.es/m/27637.1539388060@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: 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/.