Daniel Barclay (Drill) created DRILL-2646:
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Summary: CONVERT_TO/CONVERT_FROM syntax (arguments) not specified
Key: DRILL-2646
URL: https://issues.apache.org/jira/browse/DRILL-2646
Project: Apache Drill
Issue Type: Bug
Components: Documentation
Reporter: Daniel Barclay (Drill)
Assignee: Bridget Bevens
On the SQL Functions page at http://drill.apache.org/docs/sql-functions/, the
section on the CONVERT_TO and CONVERT_FROM functions never specifies the syntax
(doesn't specify how many parameters each takes, which parameter is which) or
semantics (including what the parameters are).
Additionally, the name "Type" for the first column is confusing, since the
values in that column do not seem to be Drill SQL types. Would something
roughly like "type specifier" or "conversion specifier" be more accurate?
Also, the connection between the values in the Type column and the functions
isn't clear. Besides their being no specification of the parameters (to say
where a value from the Type would go), the example at the end of the section
doesn't use any of the values in the Type column (or, in fact, any value in the
whole table). (If the string literal "'JSON'" in that CONVERT_FROM is an
example of the kind of thing listed in the Type column, then why isn't "JSON"
listed in that column (and what else is missing)?
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