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https://issues.apache.org/jira/browse/CALCITE-2091?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16292989#comment-16292989
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Julian Hyde commented on CALCITE-2091:
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How are you planning to implement this? I hope you're not looking for EXTRACT
calls, but instead looking for range expressions (sargs)?
> DruidAdapterIT testFilterTimestamp does not test translating of extract fn to
> interval
> --------------------------------------------------------------------------------------
>
> Key: CALCITE-2091
> URL: https://issues.apache.org/jira/browse/CALCITE-2091
> Project: Calcite
> Issue Type: Improvement
> Reporter: Nishant Bangarwa
> Assignee: Nishant Bangarwa
>
> this test was added to verify that the extract function is transformed to a
> date range on timestamp column. But in this it does not seem to be pushing
> extract to interval. This task is to check the root cause and fix this. I
> guess this is possibly an issue with cost computation not accounting for
> interval being queried.
> {code}
> /** Tests that conditions applied to time units extracted via the EXTRACT
> * function become ranges on the timestamp column
> *
> * <p>Test case for
> * <a
> href="https://issues.apache.org/jira/browse/CALCITE-1334";>[CALCITE-1334]
> * Convert predicates on EXTRACT function calls into date ranges</a>. */
> @Test public void testFilterTimestamp() {
> String sql = "select count(*) as c\n"
> + "from \"foodmart\"\n"
> + "where extract(year from \"timestamp\") = 1997\n"
> + "and extract(month from \"timestamp\") in (4, 6)\n";
> final String explain = "DruidQuery(table=[[foodmart, foodmart]], "
> + "intervals=[[1900-01-09T00:00:00.000Z/2992-01-10T00:00:00.000Z]], "
> + "filter=[AND(=(EXTRACT(FLAG(YEAR), $0), 1997),
> OR(=(EXTRACT(FLAG(MONTH), $0), 4), "
> + "=(EXTRACT(FLAG(MONTH), $0), 6)))], groups=[{}], aggs=[[COUNT()]])";
> sql(sql)
> .explainContains(explain)
> .returnsUnordered("C=13500");
> }
> {code}
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