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Convert the binary predicate of the form `<CastExpr<SlotRef(ResultType=BIGINT)>> <op><DecimalLiteral>` to the binary predicate of `<SlotRef(ResultType=BIGINT)> <new op> <new DecimalLiteral>`, thereby allowing the binary predicate The predicate pushes down and completes the bucket clipped. For query `select * from T where t1 = 2.0`, when the ResultType of column t1 is equal to BIGINT, in the binary predicate analyze, the type will be unified to DECIMALV2, so the binary predicate will be converted to `<CastExpr<SlotRef>> <op In the form of ><DecimalLiteral>`, because Cast wraps the t1 column, it cannot be pushed down, resulting in poor performance.We convert it to the equivalent query `select * from T where t1 = 2` to push down and improve performance. SSB test: 1. query `select * from LINEORDER3 where LO_ORDERKEY <2.2` Performance improvement: `1.587s` -> `0.012s`, The result and performance of `select * from LINEORDER3 where LO_ORDERKEY <3` are equivalent, and the other comparison methods are the same. 2. query `select * from LINEORDER3 where LO_ORDERKEY = 2.2` Performance improvement: `0.012s` -> `0.006`.
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