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https://issues.apache.org/jira/browse/CALCITE-6456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17865238#comment-17865238
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Julian Hyde commented on CALCITE-6456:
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Can you amend the description with a simple example where MySQL and BigQuery
give different results.
In reference.md, rename the numeric1 and numeric2 parameters for both LOG to
"numeric" and "base". It's just clearer. Similarly in {{SqlFunctions}}.
The {{SqlFunctions.log}} function should not depend on {{SqlLibrary}}. That
seems like a layering violation. Change the argument back to {{int}} (or could
it be {{boolean}}?)
> The Mysql log function rule LOG(x, base) is equivalent to LOG(base)/LOG(x)
> --------------------------------------------------------------------------
>
> Key: CALCITE-6456
> URL: https://issues.apache.org/jira/browse/CALCITE-6456
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.37.0
> Reporter: Caican Cai
> Priority: Major
> Fix For: 1.38.0
>
>
> The fact should be that the log function in mysql should be equivalent to
> LOG(x, base) is equivalent to LOG(x)/LOG(base), and the calculation is not
> the same as bigquery
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