[ 
https://issues.apache.org/jira/browse/CALCITE-1167?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Julian Hyde updated CALCITE-1167:
---------------------------------
    Description: 
If second date in interval is earlier than first OVERLAPS doesn't swap them.

Example:
{code:java}
select 1 from "TEST"."tdt" where (date '1999-12-01' , date '2001-12-31' ) 
overlaps ( date '2001-01-01' , date '2002-11-11' );

+------------+
|   EXPR$0   |
+------------+
| 1          |
| 1          |
| 1          |
| 1          |
+------------+

select 1 from "TEST"."tdt" where ( date '2001-12-31', date '1999-12-01' ) 
overlaps ( date '2001-01-01' , date '2002-11-11' );
+------------+
|   EXPR$0   |
+------------+
{code}

  was:
If second date in interval is earlier than first OVERLAPS doesnt swap them.

Example:

select 1 from "TEST"."tdt" where (date '1999-12-01' , date '2001-12-31' ) 
overlaps ( date '2001-01-01' , date '2002-11-11' );

+------------+
|   EXPR$0   |
+------------+
| 1          |
| 1          |
| 1          |
| 1          |
+------------+

select 1 from "TEST"."tdt" where ( date '2001-12-31', date '1999-12-01' ) 
overlaps ( date '2001-01-01' , date '2002-11-11' );
+------------+
|   EXPR$0   |
+------------+


> OVERLAPS doesnt swap operands
> -----------------------------
>
>                 Key: CALCITE-1167
>                 URL: https://issues.apache.org/jira/browse/CALCITE-1167
>             Project: Calcite
>          Issue Type: Bug
>            Reporter: Serhii Harnyk
>            Assignee: Julian Hyde
>            Priority: Minor
>              Labels: newbie
>
> If second date in interval is earlier than first OVERLAPS doesn't swap them.
> Example:
> {code:java}
> select 1 from "TEST"."tdt" where (date '1999-12-01' , date '2001-12-31' ) 
> overlaps ( date '2001-01-01' , date '2002-11-11' );
> +------------+
> |   EXPR$0   |
> +------------+
> | 1          |
> | 1          |
> | 1          |
> | 1          |
> +------------+
> select 1 from "TEST"."tdt" where ( date '2001-12-31', date '1999-12-01' ) 
> overlaps ( date '2001-01-01' , date '2002-11-11' );
> +------------+
> |   EXPR$0   |
> +------------+
> {code}



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