spark-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Cheng Hao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-5213) Pluggable SQL Parser Support
Date Thu, 22 Jan 2015 08:11:34 GMT

     [ https://issues.apache.org/jira/browse/SPARK-5213?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Cheng Hao updated SPARK-5213:
-----------------------------
    Description: 
Currently, the SQL Parser dialect is hard code in SQLContext, which is not easy to extend,
we need the features like:

bin/spark-sql --driver
-- switch to "hiveql" dialect
   spark-sql>SET spark.sql.dialect=hiveql;
   spark-sql>SELECT * FROM src LIMIT 1;

-- switch to "sql" dialect
   spark-sql>SET spark.sql.dialect=sql;
   spark-sql>SELECT * FROM src LIMIT 1;

-- register the new SQL dialect
   spark-sql> SET spark.sql.dialect.sql99=com.xxx.xxx.SQL99Dialect;
   spark-sql> SET spark.sql.dialect=sql99;
   spark-sql> SELECT * FROM src LIMIT 1;

-- register the non-exist SQL dialect
   spark-sql> SET spark.sql.dialect.sql92=NotExistedClass;
   spark-sql> SET spark.sql.dialect=sql92;
   spark-sql> SELECT * FROM src LIMIT 1;
-- Exception will be thrown and switch to dialect "sql" (for SQLContext) or "hiveql" (for
HiveContext)


  was:Currently, the SQL Parser dialect is hard code in SQLContext, which is not easy to extend,
we need to provide a SQL Parser Dialect Factory util to manage them.


> Pluggable SQL Parser Support
> ----------------------------
>
>                 Key: SPARK-5213
>                 URL: https://issues.apache.org/jira/browse/SPARK-5213
>             Project: Spark
>          Issue Type: New Feature
>          Components: SQL
>            Reporter: Cheng Hao
>
> Currently, the SQL Parser dialect is hard code in SQLContext, which is not easy to extend,
we need the features like:
> bin/spark-sql --driver
> -- switch to "hiveql" dialect
>    spark-sql>SET spark.sql.dialect=hiveql;
>    spark-sql>SELECT * FROM src LIMIT 1;
> -- switch to "sql" dialect
>    spark-sql>SET spark.sql.dialect=sql;
>    spark-sql>SELECT * FROM src LIMIT 1;
> -- register the new SQL dialect
>    spark-sql> SET spark.sql.dialect.sql99=com.xxx.xxx.SQL99Dialect;
>    spark-sql> SET spark.sql.dialect=sql99;
>    spark-sql> SELECT * FROM src LIMIT 1;
> -- register the non-exist SQL dialect
>    spark-sql> SET spark.sql.dialect.sql92=NotExistedClass;
>    spark-sql> SET spark.sql.dialect=sql92;
>    spark-sql> SELECT * FROM src LIMIT 1;
> -- Exception will be thrown and switch to dialect "sql" (for SQLContext) or "hiveql"
(for HiveContext)



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org


Mime
View raw message