[jira] [Resolved] (SPARK-15648) add TeradataDialect

["Xiao Li (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-15648?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xiao Li resolved SPARK-15648.
-----------------------------
       Resolution: Fixed
         Assignee: Kirby Linvill
    Fix Version/s: 2.3.0

> add TeradataDialect
> -------------------
>
>                 Key: SPARK-15648
>                 URL: https://issues.apache.org/jira/browse/SPARK-15648
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 1.6.1
>         Environment: Teardata database
>            Reporter: lihongli
>            Assignee: Kirby Linvill
>            Priority: Minor
>             Fix For: 2.3.0
>
>
> I found that Teradata does not have the Dialect in spark.So I want to add the TeradataDialect.scala in package org.apache.spark.sql.jdbc to support Teradata database better.
> I override three functions in TeradataDialect.scala:
> 1.The url: jdbc:teradata
> 2.The JDBCType:Teradata database does not support "TEXT",so we replace it with "VARCHAR(255)".Also we replace "BLOB" with "VARBYTE(4)".
> 3.Teradata database does not support sql like "LIMIT 1",so we replace it with "TOP 1".



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