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Since backslash is (typically) not special in CSV data, we should not be treating \. as special either. The server historically did this to keep CSV and TEXT modes more alike and to support V2 protocol; but V2 protocol is long dead, and the inconsistency with CSV standards is annoying. Remove that behavior in CopyReadLineText, and make some minor consequent code simplifications. On the client side, we need to fix psql so that it does not check for \. except when reading data from STDIN (that is, the script source). We must do that regardless of TEXT/CSV mode or there is no way to end the COPY short of script EOF. Also, be careful not to send the \. to the server in that case. This is a small compatibility break in that other applications beside psql may need similar adjustment. Also, using an older version of psql with a v18 server may result in misbehavior during CSV-mode COPY IN. Daniel Vérité, reviewed by vignesh C, Robert Haas, and myself Discussion: https://postgr.es/m/ed659f37-a9dd-42a7-82b9-0da562cc4006@manitou-mail.org |
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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.
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/.