d8304bc661
Previously, readCommandResponse() stored every column with PQgetvalue(), which returns an empty string for the SQL NULL value. An empty string is not a valid value in the pgbench expression language, and when returned by the server it was also indistinguishable from a NULL. When receiving a value, pgbench now checks for PQgetisnull() and sets a NULL value with setNullValue() before saving it. This behavior is more consistent with \set, making the result saved testable with IS NULL. This is a quality-of-life improvement, so no backpatch is done. Author: Shinya Kato <shinya11.kato@gmail.com> Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com> Reviewed-by: Shihao Zhong <zhong950419@gmail.com> Discussion: https://postgr.es/m/CAOzEurT9J9QMmpJt_8pWZCziNYCUHOD=c-hoccOVYJLc_VxVRg@mail.gmail.com
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/.