Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/10745#discussion_r49801229
--- Diff:
sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/ExpressionParser.g
---
@@ -163,22 +163,38 @@ timestampLiteral
intervalLiteral
:
- KW_INTERVAL StringLiteral qualifiers=intervalQualifiers ->
- {
- adaptor.create($qualifiers.tree.token.getType(), $StringLiteral.text)
+ (KW_INTERVAL intervalConstant KW_YEAR KW_TO KW_MONTH) => KW_INTERVAL
intervalConstant KW_YEAR KW_TO KW_MONTH
+ -> ^(TOK_INTERVAL_YEAR_MONTH_LITERAL intervalConstant)
+ | (KW_INTERVAL intervalConstant KW_DAY KW_TO KW_SECOND) => KW_INTERVAL
intervalConstant KW_DAY KW_TO KW_SECOND
+ -> ^(TOK_INTERVAL_DAY_TIME_LITERAL intervalConstant)
+ | KW_INTERVAL
+ ((intervalConstant KW_YEAR)=> year=intervalConstant KW_YEAR)?
+ ((intervalConstant KW_MONTH)=> month=intervalConstant KW_MONTH)?
+ ((intervalConstant KW_WEEK)=> week=intervalConstant KW_WEEK)?
+ ((intervalConstant KW_DAY)=> day=intervalConstant KW_DAY)?
+ ((intervalConstant KW_HOUR)=> hour=intervalConstant KW_HOUR)?
+ ((intervalConstant KW_MINUTE)=> minute=intervalConstant KW_MINUTE)?
+ ((intervalConstant KW_SECOND)=> second=intervalConstant KW_SECOND)?
+ (millisecond=intervalConstant KW_MILLISECOND)?
+ (microsecond=intervalConstant KW_MICROSECOND)?
+ -> ^(TOK_INTERVAL
+ ^(TOK_INTERVAL_YEAR_LITERAL $year?)
+ ^(TOK_INTERVAL_MONTH_LITERAL $month?)
+ ^(TOK_INTERVAL_WEEK_LITERAL $week?)
+ ^(TOK_INTERVAL_DAY_LITERAL $day?)
+ ^(TOK_INTERVAL_HOUR_LITERAL $hour?)
+ ^(TOK_INTERVAL_MINUTE_LITERAL $minute?)
+ ^(TOK_INTERVAL_SECOND_LITERAL $second?)
+ ^(TOK_INTERVAL_MILLISECOND_LITERAL $millisecond?)
+ ^(TOK_INTERVAL_MICROSECOND_LITERAL $microsecond?))
--- End diff --
are you trying to support both hive's and our internal literal grammar?
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