[jira] [Commented] (HIVE-14948) properly handle special characters in identifiers

["Eugene Koifman (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-14948?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15742804#comment-15742804 ] 

Eugene Koifman commented on HIVE-14948:
---------------------------------------

Support for quoted identifier was added in HIVE-6013.
Even though QuotedIdentifier TokenType was created there no ASTNode of that type is generated.
The ` (back tick) is stripped away in the grammar - see HiveLexer.g where QuotedIdentifier is defined.

> properly handle special characters in identifiers
> -------------------------------------------------
>
>                 Key: HIVE-14948
>                 URL: https://issues.apache.org/jira/browse/HIVE-14948
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Transactions
>            Reporter: Eugene Koifman
>            Assignee: Eugene Koifman
>         Attachments: HIVE-14948.01.patch, HIVE-14948.02.patch
>
>
> The treatment of quoted identifiers in HIVE-14943 is inconsistent.  Need to clean this up and if possible only quote those identifiers that need to be quoted in the generated SQL statement



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