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Remove unneeded lambda_stmt in place add in statistics (#89943)

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We can generate this entire query in a single lambda_stmt
so there is no need to add two which increases the size
of the cache key
This commit is contained in:
J. Nick Koston 2023-03-19 16:05:39 -10:00 committed by GitHub
parent f27d73fc34
commit 817ba97227
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1 changed files with 17 additions and 17 deletions
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34
homeassistant/components/recorder/statistics.py
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@ -1969,24 +1969,24 @@ def _latest_short_term_statistics_stmt(
metadata_ids: list[int], metadata_ids: list[int],
) -> StatementLambdaElement: ) -> StatementLambdaElement:
"""Create the statement for finding the latest short term stat rows.""" """Create the statement for finding the latest short term stat rows."""
stmt = lambda_stmt(lambda: select(*QUERY_STATISTICS_SHORT_TERM)) return lambda_stmt(
stmt += lambda s: s.join( lambda: select(*QUERY_STATISTICS_SHORT_TERM).join(
( (
most_recent_statistic_row := ( most_recent_statistic_row := (
select( select(
StatisticsShortTerm.metadata_id, StatisticsShortTerm.metadata_id,
# https://github.com/sqlalchemy/sqlalchemy/issues/9189 # https://github.com/sqlalchemy/sqlalchemy/issues/9189
# pylint: disable-next=not-callable # pylint: disable-next=not-callable
func.max(StatisticsShortTerm.start_ts).label("start_max"), func.max(StatisticsShortTerm.start_ts).label("start_max"),
) )
.where(StatisticsShortTerm.metadata_id.in_(metadata_ids)) .where(StatisticsShortTerm.metadata_id.in_(metadata_ids))
.group_by(StatisticsShortTerm.metadata_id) .group_by(StatisticsShortTerm.metadata_id)
).subquery() ).subquery()
), ),
(StatisticsShortTerm.metadata_id == most_recent_statistic_row.c.metadata_id) (StatisticsShortTerm.metadata_id == most_recent_statistic_row.c.metadata_id)
& (StatisticsShortTerm.start_ts == most_recent_statistic_row.c.start_max), & (StatisticsShortTerm.start_ts == most_recent_statistic_row.c.start_max),
)
) )
return stmt
def get_latest_short_term_statistics( def get_latest_short_term_statistics(