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Posted to dev@phoenix.apache.org by "chaijunjie (Jira)" <ji...@apache.org> on 2022/06/30 06:25:00 UTC
[jira] [Updated] (PHOENIX-6741) The result of DivideExpression is wrong when two decimal number divide
[ https://issues.apache.org/jira/browse/PHOENIX-6741?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
chaijunjie updated PHOENIX-6741:
--------------------------------
Description:
When two number has same precision and scale, then the result will be scaled by 0.
DROP TABLE IF EXISTS TEST;
CREATE TABLE TEST (
ID INTEGER NOT NULL PRIMARY KEY,
A DECIMAL(18,10),
B DECIMAL(18,10)
);
UPSERT INTO TEST VALUES(1,100,200);
SELECT ID,A/B AS C FROM TEST;
0: jdbc:phoenix:> SELECT ID,A/B AS C FROM TEST;
+-----+----+
| ID | C |
+-----+----+
| 1 | 0 |
+-----+----+
But, we need a precise result, so we need add a 1.00*, then the result will be right.
0: jdbc:phoenix:> SELECT ID,1.00*A/B AS C FROM TEST;
+-----+------+
| ID | C |
+-----+------+
| 1 | 0.5 |
+-----+------+
> The result of DivideExpression is wrong when two decimal number divide
> ----------------------------------------------------------------------
>
> Key: PHOENIX-6741
> URL: https://issues.apache.org/jira/browse/PHOENIX-6741
> Project: Phoenix
> Issue Type: Bug
> Components: core
> Affects Versions: 5.1.2
> Reporter: chaijunjie
> Assignee: chaijunjie
> Priority: Major
>
> When two number has same precision and scale, then the result will be scaled by 0.
> DROP TABLE IF EXISTS TEST;
> CREATE TABLE TEST (
> ID INTEGER NOT NULL PRIMARY KEY,
> A DECIMAL(18,10),
> B DECIMAL(18,10)
> );
> UPSERT INTO TEST VALUES(1,100,200);
> SELECT ID,A/B AS C FROM TEST;
> 0: jdbc:phoenix:> SELECT ID,A/B AS C FROM TEST;
> +-----+----+
> | ID | C |
> +-----+----+
> | 1 | 0 |
> +-----+----+
> But, we need a precise result, so we need add a 1.00*, then the result will be right.
> 0: jdbc:phoenix:> SELECT ID,1.00*A/B AS C FROM TEST;
> +-----+------+
> | ID | C |
> +-----+------+
> | 1 | 0.5 |
> +-----+------+
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