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https://issues.apache.org/jira/browse/CALCITE-4640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17613416#comment-17613416
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Stamatis Zampetakis commented on CALCITE-4640:
----------------------------------------------
The change modified the only constructor of {{JdbcTableScan}} causing
compilation problems to projects extending the latter. It is a breaking change
that was not marked in the release notes of 1.28.0. The usual pattern is
deprecate the old constructor and add a new one when modifying RelNodes. Please
keep backward compatibility in mind when proposing/accepting changes for
Calcite.
> Propagate table scan hints to JDBC
> ----------------------------------
>
> Key: CALCITE-4640
> URL: https://issues.apache.org/jira/browse/CALCITE-4640
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.27.0
> Reporter: Ulrich Kramer
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.28.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> We would like to use table scan hints to pass [parameters and variables to
> HANA
> views|https://help.sap.com/viewer/88fe5f56472e40cca6ef3c3dcab4855b/2.0.04/en-US/fafb3ea432e54fca9eff11648df5bccd.html].
> It should be possible to convert the following Calcite SQL
> {code}
> SELECT * FROM VIEW /*+ PLACEHOLDERS("$$PARAMETER_1$$"='Test') */
> {code}
> using a special {{SqlDialect}} to a HANA specific statement
> {code}
> SELECT * FROM VIEW ('PLACEHOLDER' = ('$$PARAMETER_1$$', 'Test'))
> {code}
> See also my [mail in the mailing
> list|https://mail-archives.apache.org/mod_mbox/calcite-dev/202105.mbox/%3CD161B82F-5DEC-49A2-A873-4817F4DEB15F%40contoso.com%3E].
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