[jira] [Updated] (CALCITE-4407) Support unparse special syntax when operator is DELETE

["xzh_dz (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-4407?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

xzh_dz updated CALCITE-4407:
----------------------------
    Summary: Support unparse special syntax when operator is DELETE  (was: Support unparse special syntax when operator is DELETA)

> Support unparse special syntax when operator is DELETE
> ------------------------------------------------------
>
>                 Key: CALCITE-4407
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4407
>             Project: Calcite
>          Issue Type: Wish
>            Reporter: xzh_dz
>            Priority: Major
>         Attachments: image-2020-11-18-16-12-18-340.png
>
>
> This exception can be reproduced as below:
> SqlParserTest:
> {code:java}
> // code placeholder
> @Test void testSqlDeleteSqlBasicCallToString() throws Exception {
>   final String sql0 = "delete from emps";
>   final SqlNode sqlNode0 = getSqlParser(sql0).parseStmt();
>   final SqlNode sqlNodeVisited0 = sqlNode0.accept(new SqlShuttle() {
>     @Override public SqlNode visit(SqlIdentifier identifier) {
>       return new SqlIdentifier(identifier.names,
>           identifier.getParserPosition());
>     }
>   });
>   System.out.println(sqlNodeVisited0.toString());
> }{code}
> Exception:
> {code:java}
> // code placeholder
> java.lang.UnsupportedOperationException: class org.apache.calcite.sql.SqlSyntax$7: SPECIALjava.lang.UnsupportedOperationException: class org.apache.calcite.sql.SqlSyntax$7: SPECIAL
>  at org.apache.calcite.util.Util.needToImplement(Util.java:1080) at org.apache.calcite.sql.SqlSyntax$7.unparse(SqlSyntax.java:128) at org.apache.calcite.sql.SqlOperator.unparse(SqlOperator.java:377) at org.apache.calcite.sql.SqlDialect.unparseCall(SqlDialect.java:453) at org.apache.calcite.sql.SqlCall.unparse(SqlCall.java:103) at org.apache.calcite.sql.SqlNode.toSqlString(SqlNode.java:155)
> {code}



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