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49fa99e54e
While at it, refactor patternsel() a bit so that it can be used from the LIKE/regex planner support functions as well. This makes the planner able to deal equally well with either operator or function syntax for these operations. I'm not excited about that as a feature in itself, but it provides a nice model for extensions to follow if they want such behavior for their operations. This change localizes the use of pattern_fixed_prefix() and make_greater_string() so that they no longer need be exported. (We might get pushback from extensions about that, perhaps, in which case I'd be inclined to re-export them in a new header file like_support.h.) This reduces the bulk of selfuncs.c a fair amount, removing ~1370 lines or about one-sixth of that file; it's still too big, but this is progress. Discussion: https://postgr.es/m/24537.1550093915@sss.pgh.pa.us |
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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: 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/.