[jira] [Closed] (CALCITE-550) Case-insensitive matching of sub-query columns fails

["Julian Hyde (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-550?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julian Hyde closed CALCITE-550.
-------------------------------

Closing now that 1.0.0-incubating has been released.

> Case-insensitive matching of sub-query columns fails
> ----------------------------------------------------
>
>                 Key: CALCITE-550
>                 URL: https://issues.apache.org/jira/browse/CALCITE-550
>             Project: Calcite
>          Issue Type: Bug
>            Reporter: Jinfeng Ni
>            Assignee: Julian Hyde
>             Fix For: 1.0.0-incubating
>
>
> Currently, the default LEX in Calcite is LEX.ORACLE, and most unit test cases are using LEX.ORACLE. However, when LEX is set to be MYSQL/SQL_SERVER etc, Calcite would complain "field/column not found error" in subquery, while the MYSQL/SQL_SERVER policy should allow such query. 
> For example, given the following query, with LEX.MYSQL.
> {code}
> select DID 
> from (select deptid as did 
>          FROM
>             ( values (1), (2) ) as T1(deptid) 
>          ) 
> {code}
> Calcite would raise the following error:
> {code}
> Caused by: java.lang.AssertionError: Internal error: Type 'RecordType(INTEGER did)' has no field ‘DID'
> {code}
> According to LEX.MYSQL, the unquoted sql identifier should remain unchanged, and matched with case-insensitive, hence the query is valid.
> {code}
>  /** Lexical policy similar to MySQL. (To be precise: MySQL on Windows;
>    * MySQL on Linux uses case-sensitive matching, like the Linux file system.)
>    * The case of identifiers is preserved whether or not they quoted;
>    * after which, identifiers are matched case-insensitively.
>    * Back-ticks allow identifiers to contain non-alphanumeric characters. */
>   MYSQL(Quoting.BACK_TICK, Casing.UNCHANGED, Casing.UNCHANGED, false),
> {code}



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