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Fix Interpolation at Time Data Mismatch #819

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merged 1 commit into from
Aug 30, 2024
Merged

Fix Interpolation at Time Data Mismatch #819

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2 changes: 1 addition & 1 deletion src/sdk/python/rtdip_sdk/queries/time_series/_time_series_query_builder.py
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Original file line number Diff line number Diff line change
Expand Up @@ -439,7 +439,7 @@ def _interpolation_at_time(parameters_dict: dict) -> str:
"explode(array('{{ tag_names | join('\\', \\'') }}')) AS `{{ tagname_column }}`) "
"{% endif %} "
", interpolation_events AS (SELECT coalesce(a.`{{ tagname_column }}`, b.`{{ tagname_column }}`) AS `{{ tagname_column }}`, coalesce(a.`{{ timestamp_column }}`, b.`{{ timestamp_column }}`) AS `{{ timestamp_column }}`, a.`{{ timestamp_column }}` AS `Requested_{{ timestamp_column }}`, b.`{{ timestamp_column }}` AS `Found_{{ timestamp_column }}`, b.`{{ status_column }}`, b.`{{ value_column }}` FROM date_array a FULL OUTER JOIN raw_events b ON a.`{{ timestamp_column }}` = b.`{{ timestamp_column }}` AND a.`{{ tagname_column }}` = b.`{{ tagname_column }}`) "
", interpolation_calculations AS (SELECT *, lag(`{{ timestamp_column }}`) OVER (PARTITION BY `{{ tagname_column }}` ORDER BY `{{ timestamp_column }}`) AS `Previous_{{ timestamp_column }}`, lag(`{{ value_column }}`) OVER (PARTITION BY `{{ tagname_column }}` ORDER BY `{{ timestamp_column }}`) AS `Previous_{{ value_column }}`, lead(`{{ timestamp_column }}`) OVER (PARTITION BY `{{ tagname_column }}` ORDER BY `{{ timestamp_column }}`) AS `Next_{{ timestamp_column }}`, lead(`{{ value_column }}`) OVER (PARTITION BY `{{ tagname_column }}` ORDER BY `{{ timestamp_column }}`) AS `Next_{{ value_column }}`, "
", interpolation_calculations AS (SELECT *, lag(`Found_{{ timestamp_column }}`) IGNORE NULLS OVER (PARTITION BY `{{ tagname_column }}` ORDER BY `{{ timestamp_column }}`) AS `Previous_{{ timestamp_column }}`, lag(`{{ value_column }}`) IGNORE NULLS OVER (PARTITION BY `{{ tagname_column }}` ORDER BY `{{ timestamp_column }}`) AS `Previous_{{ value_column }}`, lead(`Found_{{ timestamp_column }}`) IGNORE NULLS OVER (PARTITION BY `{{ tagname_column }}` ORDER BY `{{ timestamp_column }}`) AS `Next_{{ timestamp_column }}`, lead(`{{ value_column }}`) IGNORE NULLS OVER (PARTITION BY `{{ tagname_column }}` ORDER BY `{{ timestamp_column }}`) AS `Next_{{ value_column }}`, "
"CASE WHEN `Requested_{{ timestamp_column }}` = `Found_{{ timestamp_column }}` THEN `{{ value_column }}` WHEN `Next_{{ timestamp_column }}` IS NULL THEN `Previous_{{ value_column }}` WHEN `Previous_{{ timestamp_column }}` IS NULL AND `Next_{{ timestamp_column }}` IS NULL THEN NULL "
"ELSE `Previous_{{ value_column }}` + ((`Next_{{ value_column }}` - `Previous_{{ value_column }}`) * ((unix_timestamp(`{{ timestamp_column }}`) - unix_timestamp(`Previous_{{ timestamp_column }}`)) / (unix_timestamp(`Next_{{ timestamp_column }}`) - unix_timestamp(`Previous_{{ timestamp_column }}`)))) END AS `Interpolated_{{ value_column }}` FROM interpolation_events) "
",project AS (SELECT `{{ tagname_column }}`, `{{ timestamp_column }}`, `Interpolated_{{ value_column }}` AS `{{ value_column }}` FROM interpolation_calculations WHERE `{{ timestamp_column }}` IN ( "
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