[jira] [Updated] (CALCITE-5436) Implement DATE_SUB, TIME_SUB, TIMESTAMP_SUB (compatible w/ BigQuery)

["Tanner Clary (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-5436?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tanner Clary updated CALCITE-5436:
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    Summary: Implement DATE_SUB, TIME_SUB, TIMESTAMP_SUB (compatible w/ BigQuery)  (was: Implement DATE, TIME, TIMESTAMP Subtraction Functions (compatible w/ BigQuery))

> Implement DATE_SUB, TIME_SUB, TIMESTAMP_SUB (compatible w/ BigQuery)
> --------------------------------------------------------------------
>
>                 Key: CALCITE-5436
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5436
>             Project: Calcite
>          Issue Type: Sub-task
>            Reporter: Tanner Clary
>            Assignee: Tanner Clary
>            Priority: Major
>
> Implement BigQuery's {{TIME_SUB}}, {{TIMESTAMP_SUB}}, and {{DATE_SUB}} functions. Each of these functions follows similar behavior, the primary difference being whether the specified interval is being subtracted from a {{TIME}}, {{TIMESTAMP}}, or {{DATE}} expression. Examples for each are provided below:
> [TIME_SUB|https://cloud.google.com/bigquery/docs/reference/standard-sql/time_functions#time_sub]: {{TIME_SUB(TIME '15:30:00', INTERVAL 10 MINUTE)}} would output '15:20:00'.
> [TIMESTAMP_SUB|https://cloud.google.com/bigquery/docs/reference/standard-sql/timestamp_functions#timestamp_sub]: {{TIMESTAMP_SUB(TIMESTAMP '2008-12-25 15:30:00, INTERVAL 1 HOUR)}} would output '2008-12-25 14:30:00'.
> [DATE_SUB|https://cloud.google.com/bigquery/docs/reference/standard-sql/date_functions#date_sub]: {{DATE_SUB(DATE '2008-12-25', INTERVAL 2 DAY)}} would output '2008-12-27'.



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