[MDEV-14498] PS: Wrong value for CAST(? AS DOUBLE) when using 9223372036854775808 as a parameter Created: 2017-11-24  Updated: 2023-04-27

Status: Open
Project: MariaDB Server
Component/s: Data types
Affects Version/s: 10.2, 10.3
Fix Version/s: 10.4

Type: Bug Priority: Major
Reporter: Alexander Barkov Assignee: Alexander Barkov
Resolution: Unresolved Votes: 0
Labels: None

Issue Links:
Relates
relates to MDEV-14467 Item_param: replace {INT|DECIMAL|REAL... Closed
relates to MDEV-14476 Integer overflow when using 922337203... Open

 Description   

This query:

EXECUTE IMMEDIATE 'SELECT CAST(? AS DOUBLE),CAST(? AS DECIMAL(20,0))' USING 9223372036854775808, 9223372036854775808;

returns:

+-----------------------+--------------------------+
 
| CAST(? AS DOUBLE)     | CAST(? AS DECIMAL(20,0)) |
 
+-----------------------+--------------------------+
 
| -9.223372036854776e18 |      9223372036854775808 |
 
+-----------------------+--------------------------+

Notice:

  • the result for DOUBLE cast is wrong
  • the result for DECIMAL cast is OK
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