Major Description
Simple case in sql throws parser exception in spark 2.0.
The following query as well as similar queries fail in spark 2.0
scala> spark.sql("SELECT alias.p_double as a0, alias.p_text as a1, NULL as a2 FROM hadoop_tbl_all alias WHERE (1 = (CASE ('aaaaabbbbb' = alias.p_text) OR (8 LTE LENGTH(alias.p_text)) WHEN TRUE THEN 1 WHEN FALSE THEN 0 ELSE CAST(NULL AS INT) END))")
org.apache.spark.sql.catalyst.parser.ParseException:
mismatched input 'FROM' expecting {<EOF>, 'WHERE', 'GROUP', 'ORDER', 'HAVING', 'LIMIT', 'LATERAL', 'WINDOW', 'UNION', 'EXCEPT', 'INTERSECT', 'SORT', 'CLUSTER', 'DISTRIBUTE'}(line 1, pos 60)
== SQL ==
SELECT alias.p_double as a0, alias.p_text as a1, NULL as a2 FROM hadoop_tbl_all alias WHERE (1 = (CASE ('aaaaabbbbb' = alias.p_text) OR (8 LTE LENGTH(alias.p_text)) WHEN TRUE THEN 1 WHEN FALSE THEN 0 ELSE CAST(NULL AS INT) END))
------------------------------------------------------------^^^
at org.apache.spark.sql.catalyst.parser.ParseException.withCommand(ParseDriver.scala:197)
at org.apache.spark.sql.catalyst.parser.AbstractSqlParser.parse(ParseDriver.scala:99)
at org.apache.spark.sql.execution.SparkSqlParser.parse(SparkSqlParser.scala:46)
at org.apache.spark.sql.catalyst.parser.AbstractSqlParser.parsePlan(ParseDriver.scala:53)
at org.apache.spark.sql.SparkSession.sql(SparkSession.scala:582)
... 48 elided
