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Fix statistics_at_time query not using index

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fixes #82411
This commit is contained in:
J. Nick Koston
2023-02-19 14:48:14 -06:00
parent 68e1aaa0be
commit 85e4497bc5
1 changed files with 5 additions and 2 deletions
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7
homeassistant/components/recorder/statistics.py
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@@ -2004,7 +2004,9 @@ def _statistics_at_time(
most_recent_statistic_ids = (
# https://github.com/sqlalchemy/sqlalchemy/issues/9189
# pylint: disable-next=not-callable
lambda_stmt(lambda: select(func.max(table.id).label("max_id")))
lambda_stmt(
lambda: select(func.max(table.id).label("max_start_ts"), table.metadata_id)
)
.filter(table.start_ts < start_time_ts)
.filter(table.metadata_id.in_(metadata_ids))
.group_by(table.metadata_id)
@@ -2013,7 +2015,8 @@ def _statistics_at_time(
stmt += lambda q: q.join(
most_recent_statistic_ids,
table.id == most_recent_statistic_ids.c.max_id,
table.start_ts == most_recent_statistic_ids.c.max_start_ts
and table.metadata_id == most_recent_statistic_ids.c.metadata_id,
)
return cast(Sequence[Row], execute_stmt_lambda_element(session, stmt))