Adds Druid SQL query examples for the Stats aggregator Native Queries #16277
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…ueries in the stats aggregator docs page
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Thanks for the contribution @nrao57! I left some suggestions.
| @@ -125,8 +126,24 @@ To acquire standard deviation from variance, user can use "stddev" post aggregat | |||
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| #### Druid SQL | |||
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It would be preferable to move the SQL query section before the native query section since SQL is more widely used and familiar to users. Same suggestion for all the SQL sections in this page.
| #### Druid SQL | ||
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| ```SQL | ||
| There is no equivalent SQL for this query. |
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Perhaps move this text outside the sql codeblock?
| alias, | ||
| VARIANCE("index") AS index_var | ||
| FROM "testing" | ||
| WHERE TIME_IN_INTERVAL(__time, '2016-03-06T00:00:00/2016-03-06T23:59:59') |
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End date is exclusive, so I would think this should be start of the next day? Same for the native query:
| WHERE TIME_IN_INTERVAL(__time, '2016-03-06T00:00:00/2016-03-06T23:59:59') | |
| WHERE TIME_IN_INTERVAL(__time, '2016-03-06/2016-03-07') |
| SELECT | ||
| DATE_TRUNC('day', __time), | ||
| VARIANCE("index_var") | ||
| FROM | ||
| "testing" | ||
| WHERE | ||
| TIME_IN_INTERVAL(__time, '2013-03-01T00:00:00.000/2016-03-20T00:00:00.000') | ||
| GROUP BY | ||
| DATE_TRUNC('day', __time) |
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Small simplification:
| SELECT | |
| DATE_TRUNC('day', __time), | |
| VARIANCE("index_var") | |
| FROM | |
| "testing" | |
| WHERE | |
| TIME_IN_INTERVAL(__time, '2013-03-01T00:00:00.000/2016-03-20T00:00:00.000') | |
| GROUP BY | |
| DATE_TRUNC('day', __time) | |
| SELECT | |
| DATE_TRUNC('day', __time), | |
| VARIANCE("index_var") AS index_var | |
| FROM "testing" | |
| WHERE TIME_IN_INTERVAL(__time, '2013-03-01/2016-03-20') | |
| GROUP BY 1 |
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Hi @abhishekrb19! I have updated the Pull Request to reflect your suggestions. Please let me know if there is anything else. |
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| ```SQL | ||
| SELECT | ||
| DATE_TRUNC('day', __time), |
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Should be removed now that it's moved up?
| #### Druid SQL | ||
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| ```SQL | ||
| SELECT |
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My mistake 😅 |
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| ``` | ||
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| ### TopN query | ||
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| #### Druid SQL | ||
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| There is no equivalent SQL for this query. |
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Looking at this, it's possible to have a topN query -- the groupBy query below with an ORDER BY on one dimension and a LIMIT clause should plan the query as a topN. You could verify this by running EXPLAIN PLAN FOR
| @@ -107,6 +107,18 @@ To acquire standard deviation from variance, user can use "stddev" post aggregat | |||
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| ### Timeseries query | |||
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| #### Druid SQL | |||
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| ```SQL | |||
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It will also be nice to include a mention of the SQL functions VARIANCE and STDDEV in the above section where it provides the native JSON syntaxes
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I added the TopN Druid SQL query and a table describing the sql variance and stdev functions. |
Co-authored-by: Abhishek Radhakrishnan <abhishek.rb19@gmail.com>
Adds Druid SQL query examples for the Stats aggregator Native Queries
Fixes #13148.
Description
This PR adds Druid SQL query examples for the Stats aggregator documents page. Currently, there are only examples for the Native queries.
This PR has: