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Avoid casting NULLs in UNION... - Mailing list pgsql-admin

From Marko Rihtar
Subject Avoid casting NULLs in UNION...
Date
Msg-id CABSSDoH3A7qfFnY6UExqjYKOTxox0=r0jt4_PWrhL4-u0yP2kQ@mail.gmail.com
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Responses Re: Avoid casting NULLs in UNION...
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Hi,

maybe you can help me with this issue.
Here is an example

SELECT NULL::integer

UNION ALL

SELECT NULL

UNION ALLSELECT 123


For this sql to work i have to cast NULL to integer.
I was wondering if there exists some configuration parameter at database level that can be used to avoid this need for explicit casting?

thanks for help,
Marko

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