58054de2d0
This function was originally coded with a handmade expansion of the array subscripts. We can do it a little faster and far more legibly today, by using unnest() WITH ORDINALITY. While at it, let's apply the rowcount estimation support that exists for the underlying unnest() function: reduce the default ROWS estimate to 100 and attach array_unnest_support. I'm not sure that array_unnest_support can do anything useful today with the call sites that exist in information_schema, but it can't hurt, and the existing default rowcount of 1000 is surely much too high for any of these cases. The psql.sql regression script is using _pg_expandarray() as a test case for \sf+. While we could keep doing so, the new one-line function body makes a poor test case for \sf+ row-numbering, so switch it to print another information_schema function. Discussion: https://postgr.es/m/1424303.1703355485@sss.pgh.pa.us |
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| contrib | ||
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| src | ||
| .cirrus.star | ||
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| COPYRIGHT | ||
| GNUmakefile.in | ||
| HISTORY | ||
| Makefile | ||
| README | ||
| aclocal.m4 | ||
| configure | ||
| configure.ac | ||
| meson.build | ||
| meson_options.txt | ||
README
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. Copyright and license information can be found in the file COPYRIGHT. General documentation about this version of PostgreSQL can be found at: https://www.postgresql.org/docs/devel/ In particular, information about building PostgreSQL from the source code can be found at: https://www.postgresql.org/docs/devel/installation.html The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.