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Posted to github@datafusion.apache.org by "jayzhan211 (via GitHub)" <gi...@apache.org> on 2025/03/24 12:02:57 UTC

Re: [I] Integrate `Analyzer` within LogicalPlan building stage [datafusion]

jayzhan211 commented on issue #14618:
URL: https://github.com/apache/datafusion/issues/14618#issuecomment-2747896446

   I found there is a big issue for moving `TypeCoercion` into `LogicalBuilder`.
   
   We have expression rewrite API like `map_expression` and we can rewrite it after the logical plan is built. In this case having a single final type coercion rule before plan rewrite is a better idea, otherwise we need to bring schema together with `Expr` for `map_expressions` so we can recompute the types with schema every time we have a new `Expr`.


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