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Posted to dev@phoenix.apache.org by "Chen Feng (Jira)" <ji...@apache.org> on 2019/12/04 01:56:00 UTC
[jira] [Updated] (PHOENIX-5600) "case when" of casting INTEGER to
UNSIGNED_LONG throws exception
[ https://issues.apache.org/jira/browse/PHOENIX-5600?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chen Feng updated PHOENIX-5600:
-------------------------------
Summary: "case when" of casting INTEGER to UNSIGNED_LONG throws exception (was: case when for INTEGER to UNSIGNED_LONG throws exception)
> "case when" of casting INTEGER to UNSIGNED_LONG throws exception
> ----------------------------------------------------------------
>
> Key: PHOENIX-5600
> URL: https://issues.apache.org/jira/browse/PHOENIX-5600
> Project: Phoenix
> Issue Type: Improvement
> Reporter: Chen Feng
> Priority: Minor
>
> Executing "case when" of casting INTEGER to UNSIGNED_LONG throws exception.
> An example is shown as follows:
> CREATE TABLE IF NOT EXISTS TBL_TEST_CASE_WHEN (A UNSIGNED_LONG NOT NULL, Y FLOAT, Z UNSIGNED_LONG CONSTRAINT pk PRIMARY KEY (A));
> UPSERT INTO TBL_TEST_CASE_WHEN VALUES (1, 1, 1);
> UPSERT INTO TBL_TEST_CASE_WHEN VALUES (2, 2, 2);
> #this works correctly
> SELECT CASE WHEN A = 1 THEN A+9 ELSE A END, CASE WHEN Y > 1 THEN 5.5 ELSE Y END FROM TBL_TEST_CASE_WHEN;
> #this throws exception
> SELECT CASE WHEN A = 1 THEN 10 ELSE A END, CASE WHEN Y > 1 THEN 5.5 ELSE Y END FROM TBL_TEST_CASE_WHEN;
>
> By checking code of PUnsignedLong.java and PInteger.java, I see such comment in PLong.isCoercibleTo(isCoercibleTo), it says
> // In general, don't allow conversion of LONG to INTEGER. There are times when
> // we check isComparableTo for a more relaxed check and then throw a runtime
> // exception if we overflow
> However, in this example, enabling casting a const INTEGER to UNSIGNED_LONG is more comprehensible.
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