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Posted to issues@spark.apache.org by "Herman van Hovell (JIRA)" <ji...@apache.org> on 2016/09/29 22:33:20 UTC
[jira] [Resolved] (SPARK-17612) Support `DESCRIBE table PARTITION`
SQL syntax
[ https://issues.apache.org/jira/browse/SPARK-17612?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Herman van Hovell resolved SPARK-17612.
---------------------------------------
Resolution: Fixed
Assignee: Dongjoon Hyun
Fix Version/s: 2.1.0
Resolved per Dongjoon's PR
> Support `DESCRIBE table PARTITION` SQL syntax
> ---------------------------------------------
>
> Key: SPARK-17612
> URL: https://issues.apache.org/jira/browse/SPARK-17612
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Dongjoon Hyun
> Assignee: Dongjoon Hyun
> Fix For: 2.1.0
>
>
> This issue implements `DESC PARTITION` SQL Syntax again. It was dropped since Spark 2.0.0.
> h4. Spark 2.0.0
> {code}
> scala> sql("CREATE TABLE partitioned_table (a STRING, b INT) PARTITIONED BY (c STRING, d STRING)")
> res0: org.apache.spark.sql.DataFrame = []
> scala> sql("ALTER TABLE partitioned_table ADD PARTITION (c='Us', d=1)")
> res1: org.apache.spark.sql.DataFrame = []
> scala> sql("DESC partitioned_table PARTITION (c='Us', d=1)").show(false)
> org.apache.spark.sql.catalyst.parser.ParseException:
> Unsupported SQL statement
> == SQL ==
> DESC partitioned_table PARTITION (c='Us', d=1)
> at org.apache.spark.sql.catalyst.parser.AbstractSqlParser$$anonfun$parsePlan$1.apply(ParseDriver.scala:58)
> at org.apache.spark.sql.catalyst.parser.AbstractSqlParser$$anonfun$parsePlan$1.apply(ParseDriver.scala:53)
> at org.apache.spark.sql.catalyst.parser.AbstractSqlParser.parse(ParseDriver.scala:82)
> at org.apache.spark.sql.execution.SparkSqlParser.parse(SparkSqlParser.scala:45)
> at org.apache.spark.sql.catalyst.parser.AbstractSqlParser.parsePlan(ParseDriver.scala:53)
> at org.apache.spark.sql.SparkSession.sql(SparkSession.scala:573)
> ... 48 elided
> {code}
> h4. Spark 1.6.2
> {code}
> scala> sql("CREATE TABLE partitioned_table (a STRING, b INT) PARTITIONED BY (c STRING, d STRING)")
> res1: org.apache.spark.sql.DataFrame = [result: string]
> scala> sql("ALTER TABLE partitioned_table ADD PARTITION (c='Us', d=1)")
> res2: org.apache.spark.sql.DataFrame = [result: string]
> scala> sql("DESC partitioned_table PARTITION (c='Us', d=1)").show(false)
> 16/09/20 12:48:36 WARN LazyStruct: Extra bytes detected at the end of the row! Ignoring similar problems.
> +----------------------------------------------------------------+
> |result |
> +----------------------------------------------------------------+
> |a string |
> |b int |
> |c string |
> |d string |
> | |
> |# Partition Information |
> |# col_name data_type comment |
> | |
> |c string |
> |d string |
> +----------------------------------------------------------------+
> {code}
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