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/.
Tom Lane
authored
In non-text output formats, parallelized aggregates were reporting "Partial" or "Finalize" as a field named "Operation", which might be all right in the absence of any context --- but other plan node types use that field to report SQL-visible semantics, such as Select/Insert/Update/Delete. So that naming choice didn't seem good to me. I changed it to "Partial Mode". Also, the field did not appear at all for a non-parallelized Agg plan node, which is contrary to expectation in non-text formats. We're notionally producing objects that conform to a schema, so the set of fields for a given node type and EXPLAIN mode should be well-defined. I set it up to fill in "Simple" in such cases. Other fields that were added for parallel query, namely "Parallel Aware" and Gather's "Single Copy", had not gotten the word on that point either. Make them appear always in non-text output. Also, the latter two fields were nominally producing boolean output, but were getting it wrong, because bool values shouldn't be quoted in JSON or YAML. Somehow we'd not needed an ExplainPropertyBool formatting subroutine before 9.6; but now we do, so invent it. Discussion: <16002.1466972724@sss.pgh.pa.us>
| Name | Last commit | Last update |
|---|---|---|
| config | ||
| contrib | ||
| doc | ||
| src | ||
| .dir-locals.el | ||
| .gitattributes | ||
| .gitignore | ||
| COPYRIGHT | ||
| GNUmakefile.in | ||
| HISTORY | ||
| Makefile | ||
| README | ||
| README.git | ||
| aclocal.m4 | ||
| configure | ||
| configure.in |