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https://issues.apache.org/jira/browse/CALCITE-4442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17251529#comment-17251529
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Julian Hyde commented on CALCITE-4442:
--------------------------------------
This is a question, not a bug in Calcite.
> SqlAlter extend not support ALTER TABLE statement
> --------------------------------------------------
>
> Key: CALCITE-4442
> URL: https://issues.apache.org/jira/browse/CALCITE-4442
> Project: Calcite
> Issue Type: Wish
> Components: core
> Affects Versions: 1.18.0
> Environment: calcite 1.18.0
> and so does the latest 1.26.0
> Reporter: chener
> Priority: Major
>
> I want to extend the ALTER TABLE statement ,but I find it is impossible to do
> that unless i change the source code :
>
> {code:java}
> // parser.jj
> /** too long to ignore **/
> SqlAlter SqlAlter() :
> {
> final Span s;
> final String scope;
> final SqlAlter alterNode;
> }
> {
> <ALTER> { s = span(); }
> scope = Scope()
> /** too long to ignore **/{code}
> Here you see the ALTER statement must have a scope SYSTEM or SESSION ,which
> is confined
>
>
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