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From "Jacky Shen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-21785) Support create table from a file schema
Date Thu, 05 Oct 2017 17:13:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-21785?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16193209#comment-16193209
] 

Jacky Shen commented on SPARK-21785:
------------------------------------

Yes, we can create table from existing parquet file and it is a good solution.

but for the request itself, the user want to create table with the schema from the given parquet
file and specify a different location to the table. Maybe more other table properties.
that's the "create table ... using parquet" cannot achieve.


{code:sql}
spark-sql> create table table2 using parquet options(path '/Users/jacshen/project/git-rep/spark/sql/core/src/test/resources/test-data/dec-in-fixed-len.parquet')
location '/tmp/table1';
Error in query: 
LOCATION and 'path' in OPTIONS are both used to indicate the custom table path, you can only
specify one of them.(line 1, pos 0)

{code}


> Support create table from a file schema
> ---------------------------------------
>
>                 Key: SPARK-21785
>                 URL: https://issues.apache.org/jira/browse/SPARK-21785
>             Project: Spark
>          Issue Type: Wish
>          Components: SQL
>    Affects Versions: 2.1.1, 2.2.0
>            Reporter: liupengcheng
>              Labels: sql
>
> Current spark doest not support creating a table from a file schema
> for example:
> {code:java}
> CREATE EXTERNAL TABLE IF NOT EXISTS test LIKE PARQUET '/user/test/abc/a.snappy.parquet'
STORED AS PARQUET LOCATION
> '/user/test/def/';
> {code}



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