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When IN/ANY clauses contain both constants and variable expressions, the optimizer transforms them into separate structures: constants become an array expression while variables become individual OR conditions. This transformation was creating an overlap with the token locations, causing pg_stat_statements query normalization to crash because it could not calculate the amount of bytes remaining to write for the normalized query. This commit disables squashing for mixed IN list expressions when constructing a scalar array op, by setting list_start and list_end to -1 when both variables and non-variables are present. Some regression tests are added to PGSS to verify these patterns. Author: Sami Imseih <samimseih@gmail.com> Reviewed-by: Dmitry Dolgov <9erthalion6@gmail.com> Discussion: https://postgr.es/m/CAA5RZ0ts9qiONnHjjHxPxtePs22GBo4d3jZ_s2BQC59AN7XbAA@mail.gmail.com Backpatch-through: 18
The PostgreSQL contrib tree
---------------------------
This subtree contains porting tools, analysis utilities, and plug-in
features that are not part of the core PostgreSQL system, mainly
because they address a limited audience or are too experimental to be
part of the main source tree. This does not preclude their
usefulness.
User documentation for each module appears in the main SGML
documentation.
When building from the source distribution, these modules are not
built automatically, unless you build the "world" target. You can
also build and install them all by running "make all" and "make
install" in this directory; or to build and install just one selected
module, do the same in that module's subdirectory.
Some directories supply new user-defined functions, operators, or
types. To make use of one of these modules, after you have installed
the code you need to register the new SQL objects in the database
system by executing a CREATE EXTENSION command. In a fresh database,
you can simply do
CREATE EXTENSION module_name;
See the PostgreSQL documentation for more information about this
procedure.