[Sqlalchemy-commits] commit/sqlalchemy: zzzeek: Add new "expanding" feature to bindparam()

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1 new commit in sqlalchemy:

https://bitbucket.org/zzzeek/sqlalchemy/commits/7d9f241d63b7/
Changeset:   7d9f241d63b7
Branch:      master
User:        zzzeek
Date:        2017-04-07 19:53:49+00:00
Summary:     Add new "expanding" feature to bindparam()

Added a new kind of :func:`.bindparam` called "expanding".  This is
for use in ``IN`` expressions where the list of elements is rendered
into individual bound parameters at statement execution time, rather
than at statement compilation time.  This allows both a single bound
parameter name to be linked to an IN expression of multiple elements,
as well as allows query caching to be used with IN expressions.  The
new feature allows the related features of "select in" loading and
"polymorphic in" loading to make use of the baked query extension
to reduce call overhead.   This feature should be considered to be
**experimental** for 1.2.

Fixes: #3953
Change-Id: Ie708414a3ab9c0af29998a2c7f239ff7633b1f6e

Affected #:  12 files

Repository URL: https://bitbucket.org/zzzeek/sqlalchemy/

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