[MCOL-4627] SET int_col=decimal_col returns an error Created: 2021-03-22  Updated: 2023-07-02

Status: Open
Project: MariaDB ColumnStore
Component/s: PrimProc
Affects Version/s: 5.6.1, 6.1.1
Fix Version/s: Icebox

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

Issue Links:
Blocks
blocks MCOL-4755 Allow joins on all numeric data type ... Open
Relates
relates to MCOL-641 Full DECIMAL support in ColumnStore Closed
relates to MCOL-4361 Replace pow(10.0, (double)scale) expr... Closed
relates to MCOL-4619 TreeNode::getUintVal() does not round... Closed
relates to MCOL-4628 SET double_col=decimal_col returns an... Open

 Description   

DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (i INT, d DECIMAL(10,1)) ENGINE=ColumnStore;
INSERT INTO t1 VALUES (0, 1.5);
UPDATE t1 SET i=d;

ERROR 1264 (22003): CAL0002: IDB-2025: Data truncated for column 'i'

Looks wrong. It should round decimal to int without errors, like InnoDB does:

DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (i INT, d DECIMAL(10,1)) ENGINE=InnoDB;
INSERT INTO t1 VALUES (0, 1.5);
UPDATE t1 SET i=d;
SELECT * FROM t1;

+------+------+
| i    | d    |
+------+------+
|    2 |  1.5 |
+------+------+


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