How could I elog the tupleTableSlot to the fronted terminal?

From: "jacktby(at)gmail(dot)com" <jacktby(at)gmail(dot)com>
To: pgsql-general <pgsql-general(at)lists(dot)postgresql(dot)org>
Subject: How could I elog the tupleTableSlot to the fronted terminal?
Date: 2023-01-30 15:23:53
Message-ID: 202301302306168304483@gmail.com
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For example, I use "insert into t values(1)"; and I 'll get a tupleTableSlot,

And Now I want to get the real data , that's 1, and then use elog() func
to print it. Could you give me some codes to realize that? futhermore,
what If the data type is text or other types? What do I need to change?
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jacktby(at)gmail(dot)com

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