Github user viirya commented on the issue:
https://github.com/apache/spark/pull/19813
I agree that the best is we can have both of them.
I have a proposal to replace statement output in split methods. Maybe you
can check if it sounds good.
By #20043, we have a `StatementValue` wrapping statement output. Instead of
immediately embedding the statement in codes, we use a special replacement like
`%STATEMENT_1%` for it. Normally we replace this with actual statement. If we
need split methods, we replace this with a generated variable name. As it is
special replacement, I think it should be safer.
This is the idea to more safely replace statement with generate variable
name under the string based framework.
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