[FLINK-21698] Disable problematic cast conversion between NUMERIC type and TIMESTAMP type - ASF JIRA

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Details

Type: Sub-task
Status: Closed
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 1.13.0
Component/s: Table SQL / Planner
Labels:
- pull-request-available

Release Note:

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The CAST operation between NUMERIC type and TIMESTAMP type is problematic and is disabled now, e.g. CAST(numeric AS TIMESTAMP(3)) is disabled and should use TO_TIMESTAMP(FROM_UNIXTIME(numeric)) instead.

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The CAST operation between NUMERIC type and TIMESTAMP type is problematic and is disabled now, e.g. CAST(numeric AS TIMESTAMP(3)) is disabled and should use TO_TIMESTAMP(FROM_UNIXTIME(numeric)) instead.

Description

The cast conversion between NUMERIC type and TIMESTAMP type is problematic , we should disable it, NUMERIC type and TIMESTAMP_LTZ type cast conversion is valid.