Fix: common_sub_expression_eliminate optimizer rule failed
#7
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Common_sub_expression_eliminate rule failed with error:
`SchemaError(FieldNotFound {field: <name>}, valid_fields: []})`
due to the schema being changed by the second application of
`find_common_exprs`.
Used NamePreserver mechanism to restore original schema name and
generate Projection with original names at the end of
aggregate optimization.
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Common_sub_expression_eliminate rule failed with error:
SchemaError(FieldNotFound {field: <name>}, valid_fields: []})due to the schema being changed by the second application of
find_common_exprs.Used NamePreserver mechanism to restore original schema name and generate Projection with original names at the end of aggregate optimization.