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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2020-09-25 22:31:16 -0400 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2020-10-31 13:44:53 -0400 |
| commit | 654b462d668a2ced4e87077b9babb2590acbf983 (patch) | |
| tree | 8b6023480423e990c9bbca7c280cb1cb58e012fc /lib/sqlalchemy/orm/context.py | |
| parent | 841eb216644202567ebddfc0badc51a3a35e98c3 (diff) | |
| download | sqlalchemy-review/mike_bayer/tutorial20.tar.gz | |
tutorial 2.0 WIPreview/mike_bayer/tutorial20
Add SelectBase.exists() method as it seems strange this is
not available already. The Exists construct itself does
not provide full SELECT-building capabilities so it makes
sense this should be used more like a scalar_subquery.
Make sure stream_results is getting set up when yield_per
is used, for 2.0 style statements as well. this was
hardcoded inside of Query.yield_per() and is now moved
to take place within QueryContext.
Change-Id: Icafcd4fd9b708772343d56edf40995c9e8f835d6
Diffstat (limited to 'lib/sqlalchemy/orm/context.py')
| -rw-r--r-- | lib/sqlalchemy/orm/context.py | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/sqlalchemy/orm/context.py b/lib/sqlalchemy/orm/context.py index 5e9cf9cce..12759f018 100644 --- a/lib/sqlalchemy/orm/context.py +++ b/lib/sqlalchemy/orm/context.py @@ -216,6 +216,16 @@ class ORMCompileState(CompileState): statement._execution_options, ) + if "yield_per" in execution_options or load_options._yield_per: + execution_options = execution_options.union( + { + "stream_results": True, + "max_row_buffer": execution_options.get( + "yield_per", load_options._yield_per + ), + } + ) + bind_arguments["clause"] = statement # new in 1.4 - the coercions system is leveraged to allow the |