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https://issues.apache.org/jira/browse/SPARK-20962?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Takeshi Yamamuro updated SPARK-20962:
-------------------------------------
Description:
Currently, we do not support subquery column aliases;
{code}
scala> sql("SELECT * FROM (SELECT 1 AS col1, 1 AS col2) t(a, b)").show
org.apache.spark.sql.catalyst.parser.ParseException:
mismatched input '(' expecting {<EOF>, ',', 'WHERE', 'GROUP', 'ORDER',
'HAVING', 'LIMIT', 'JOIN', 'CROSS', 'INNER', 'LEFT', 'RIGHT', 'FULL',
'NATURAL', 'LATERAL', 'WINDOW', 'UNION', 'EXCEPT', 'MINUS', 'INTERSECT',
'SORT', 'CLUSTER', 'DISTRIBUTE', 'ANTI'}(line 1, pos 45)
== SQL ==
SELECT * FROM (SELECT 1 AS col1, 1 AS col2) t(a, b)
---------------------------------------------^^^
at
org.apache.spark.sql.catalyst.parser.ParseException.withCommand(ParseDriver.scala:217)
at
org.apache.spark.sql.catalyst.parser.AbstractSqlParser.parse(ParseDriver.scala:114)
at
org.apache.spark.sql.execution.SparkSqlParser.parse(SparkSqlParser.scala:48)
at
org.apache.spark.sql.catalyst.parser.AbstractSqlParser.parsePlan(ParseDriver.scala:68)
at org.apache.spark.sql.SparkSession.sql(SparkSession.scala:623)
{code}
We could support this by referring;
http://docs.aws.amazon.com/redshift/latest/dg/r_FROM_clause30.html
was:
Currently, we do not support subquery aliases;
{code}
scala> sql("SELECT * FROM (SELECT 1 AS col1, 1 AS col2) t(a, b)").show
org.apache.spark.sql.catalyst.parser.ParseException:
mismatched input '(' expecting {<EOF>, ',', 'WHERE', 'GROUP', 'ORDER',
'HAVING', 'LIMIT', 'JOIN', 'CROSS', 'INNER', 'LEFT', 'RIGHT', 'FULL',
'NATURAL', 'LATERAL', 'WINDOW', 'UNION', 'EXCEPT', 'MINUS', 'INTERSECT',
'SORT', 'CLUSTER', 'DISTRIBUTE', 'ANTI'}(line 1, pos 45)
== SQL ==
SELECT * FROM (SELECT 1 AS col1, 1 AS col2) t(a, b)
---------------------------------------------^^^
at
org.apache.spark.sql.catalyst.parser.ParseException.withCommand(ParseDriver.scala:217)
at
org.apache.spark.sql.catalyst.parser.AbstractSqlParser.parse(ParseDriver.scala:114)
at
org.apache.spark.sql.execution.SparkSqlParser.parse(SparkSqlParser.scala:48)
at
org.apache.spark.sql.catalyst.parser.AbstractSqlParser.parsePlan(ParseDriver.scala:68)
at org.apache.spark.sql.SparkSession.sql(SparkSession.scala:623)
{code}
We could support this by referring;
http://docs.aws.amazon.com/redshift/latest/dg/r_FROM_clause30.html
> Support subquery column aliases in FROM clause
> ----------------------------------------------
>
> Key: SPARK-20962
> URL: https://issues.apache.org/jira/browse/SPARK-20962
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 2.1.1
> Reporter: Takeshi Yamamuro
> Fix For: 2.3.0
>
>
> Currently, we do not support subquery column aliases;
> {code}
> scala> sql("SELECT * FROM (SELECT 1 AS col1, 1 AS col2) t(a, b)").show
> org.apache.spark.sql.catalyst.parser.ParseException:
> mismatched input '(' expecting {<EOF>, ',', 'WHERE', 'GROUP', 'ORDER',
> 'HAVING', 'LIMIT', 'JOIN', 'CROSS', 'INNER', 'LEFT', 'RIGHT', 'FULL',
> 'NATURAL', 'LATERAL', 'WINDOW', 'UNION', 'EXCEPT', 'MINUS', 'INTERSECT',
> 'SORT', 'CLUSTER', 'DISTRIBUTE', 'ANTI'}(line 1, pos 45)
> == SQL ==
> SELECT * FROM (SELECT 1 AS col1, 1 AS col2) t(a, b)
> ---------------------------------------------^^^
> at
> org.apache.spark.sql.catalyst.parser.ParseException.withCommand(ParseDriver.scala:217)
> at
> org.apache.spark.sql.catalyst.parser.AbstractSqlParser.parse(ParseDriver.scala:114)
> at
> org.apache.spark.sql.execution.SparkSqlParser.parse(SparkSqlParser.scala:48)
> at
> org.apache.spark.sql.catalyst.parser.AbstractSqlParser.parsePlan(ParseDriver.scala:68)
> at org.apache.spark.sql.SparkSession.sql(SparkSession.scala:623)
> {code}
> We could support this by referring;
> http://docs.aws.amazon.com/redshift/latest/dg/r_FROM_clause30.html
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