d6542f8dfc
This <note> was originally written to describe the double levels of de-backslashing encountered when a backslash-aware string literal is used to hold the text representation of a composite value. It still made sense when we switched to mostly using E'...' syntax for that type of literal. However, commitf77de4b0cmangled it completely by changing the example literal to be SQL-standard. The extra pass of de-backslashing described in the text doesn't actually occur with the example as written, unless you happen to be using standard_conforming_strings = off. We could restore this <note> to self-consistency by reverting the change fromf77de4b0c, but on the whole I judge that its time has passed. standard_conforming_strings = off is nearly obsolete, and may soon be fully so. But without that, the behavior isn't so complicated as to justify a discursive note. I observe that the nearby section about array I/O syntax has no equivalent text, although that syntax is equally subject to this issue. Author: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/2998401.1767038920@sss.pgh.pa.us Discussion: https://postgr.es/m/3279216.1767072538@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.
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/.