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https://issues.apache.org/jira/browse/SPARK-19115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15808091#comment-15808091
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Xiao Li commented on SPARK-19115:
---------------------------------
When the location of the table is not user provided, it will be a managed
table. It is not a bug, but by design.
> SparkSQL unsupported the command " create external table if not exist
> new_tbl like old_tbl"
> --------------------------------------------------------------------------------------------
>
> Key: SPARK-19115
> URL: https://issues.apache.org/jira/browse/SPARK-19115
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.0.1
> Environment: spark2.0.1 hive1.2.1
> Reporter: Xiaochen Ouyang
>
> spark2.0.1 unsupported the command " create external table if not exist
> new_tbl like old_tbl"
> we tried to modify the sqlbase.g4 file,change
> " | CREATE TABLE (IF NOT EXISTS)? target=tableIdentifier
> LIKE source=tableIdentifier
> #createTableLike"
> to
> " | CREATE EXTERNAL? TABLE (IF NOT EXISTS)? target=tableIdentifier
> LIKE source=tableIdentifier
> #createTableLike"
> and then we compiled spark and replaced the jar "spark-catalyst-2.0.1.jar"
> ,after that,we found we can run command "create external table if not exist
> new_tbl like old_tbl" successfully,unfortunately we found the generated
> table's type is MANAGED_TABLE other than EXTERNAL_TABLE in metastore
> database .
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