Max Gekk created SPARK-35037:
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Summary: Recognize '-' before the interval string in literals
Key: SPARK-35037
URL: https://issues.apache.org/jira/browse/SPARK-35037
Project: Spark
Issue Type: Sub-task
Components: SQL
Affects Versions: 3.2.0
Reporter: Max Gekk
Assignee: Max Gekk
According to the SQL standard:
{code:java}
<interval literal> ::=
INTERVAL [ <sign> ] <interval string> <interval qualifier>
<interval string> ::=
<quote> <unquoted interval string> <quote>
<unquoted interval string> ::=
[ <sign> ] { <year-month literal> | <day-time literal> }
<sign> ::=
<plus sign>
| <minus sign>
{code}
but the parsing fails:
{code:java}
spark-sql> select interval -'1-1' year to month;
Error in query:
mismatched input 'to' expecting {<EOF>, ';'}(line 1, pos 28)
== SQL ==
select interval -'1-1' year to month
----------------------------^^^
{code}
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