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https://issues.apache.org/jira/browse/CALCITE-2846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16828996#comment-16828996
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Danny Chan commented on CALCITE-2846:
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For documentation i have made change for reference.md:
[PR#1189|https://github.com/apache/calcite/pull/1189]
# Add a new category named *SqlDialect Operators* to list all the sql dialect
operators, for every operator, we tag the sql dialects with it.
# Move mysql-specific operators to this category
> Document Oracle-specific functions, such as NVL and LTRIM, in the SQL
> reference
> -------------------------------------------------------------------------------
>
> Key: CALCITE-2846
> URL: https://issues.apache.org/jira/browse/CALCITE-2846
> Project: Calcite
> Issue Type: Improvement
> Components: site
> Reporter: Julian Hyde
> Assignee: Danny Chan
> Priority: Major
> Labels: documentation, pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Document Oracle-specific functions (DECODE, NVL, LTRIM, RTRIM, SUBSTR,
> GREATEST, LEAST) in the [SQL
> reference|https://calcite.apache.org/docs/reference.html].
> Same goes for MySQL-specific functions (e.g. JSON_TYPE).
> I don't think we should have separate lists of Oracle-specific functions and
> MySQL-specific functions. Because quite a few functions appear in more than
> one place. Better, I think, to have a concise annotation against each
> function which tables it occurs in.
> The current list of tables is standard, oracle, spatial, mysql. Perhaps also
> indicate whether a function is an extension to the SQL standard but still
> occurs in Calcite's default table.
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