xiong duan created CALCITE-6712:
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Summary: FROM_BASE64 and PARSE_URL's return data type should
always be nullable
Key: CALCITE-6712
URL: https://issues.apache.org/jira/browse/CALCITE-6712
Project: Calcite
Issue Type: Bug
Reporter: xiong duan
The return values of these two functions are related to the specific parameter
value.
If the parameter is not nullable, then the return type is still nullable
{code:java}
from_base64('-1') return null
parse_url('http://calcite.apache.org/path1/p.php?k1=v1&k2=v2#Ref1','QUERY',
'k3') return null{code}
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