Calcite does not support Oracle’s outer join syntax (“(+)”) or, for that 
matter, SQL Server’s syntax (“(*)”).

Please log a JIRA case, asking for both to be added to the Babel parser. (I 
don’t want to add it to the Core parser, because it will cause ambiguities.)

I don’t know of a workaround.

Julian




> On May 27, 2021, at 9:50 AM, Kimieciki, Igor (ESI) 
> <[email protected]> wrote:
> 
> Hello Calcite Development Team!
> 
> I'm a software developer working on a project which includes Oracle SQL 
> queries parsing and transformation, and I'm using Calcite's engine to 
> accomplish some of my objectives.
> 
> I've been facing some issues regarding the parsing of SQL89 queries, more 
> specifically the ones which use oracles outer join "(+)" syntax.
> 
> For instance, when trying to parse the query below into an SqlNode object:
> 
> SELECT *
> from TAB1, TAB2
> where TAB1.key = TAB2.key (+)
> 
> I would receive the following exception:
> 
> org.apache.calcite.sql.parser.impl.ParseException: Encountered ")" at line 3, 
> column 26.
> 
> 
> I could not find any references for this operations on calcite's forums and 
> documentations, so I'm reaching out this mail list to clarify those errors.
> 
> Does Calcite currently support SQL89 outer join operations with (+) syntax? 
> if not, is there any recommended workaround to process queries that use it?
> 
> Any feedbacks are welcome and thank you for your time.
> 
> Best Regards,
> 
> Igor Kimieciki
> 
> 

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