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https://issues.apache.org/jira/browse/CALCITE-2299?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16512977#comment-16512977
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Sergey Nuyanzin commented on CALCITE-2299:
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Unfortunately have not found tests related to TimeUnits in Avatica (except
date/time extraction). That is why added 2 new tests.
Could be seen here
https://github.com/apache/calcite-avatica/compare/master...snuyanzin:CALCITE_AVATICA_2299
if it is ok I will do a PR for that
> TIMESTAMPADD(SQL_TSI_FRAC_SECOND) should be nanoseconds not microseconds
> ------------------------------------------------------------------------
>
> Key: CALCITE-2299
> URL: https://issues.apache.org/jira/browse/CALCITE-2299
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.16.0
> Reporter: James Duong
> Assignee: Julian Hyde
> Priority: Minor
> Fix For: avatica-1.12.0
>
>
> When calling TIMESTAMPADD with the first parameter SQL_TSI_FRAC_SECOND and
> the JDBC escape sequence, this gets interpreted as microseconds when it
> should be interpreted as nanoseconds.
>
> From the ODBC spec on MSDN:
> [https://docs.microsoft.com/en-us/sql/odbc/reference/appendixes/time-date-and-interval-functions?view=sql-server-2017]
> 'where fractional seconds are expressed in billionths of a second.'
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