fix: custom query should have precedence over default query in RedshiftToS3Operator #41634
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This PR contains a small fix, in my opinion. When unloading data to S3, one can either pass custom select_query or provide schema and table so that default query is created (SELECT * FROM {self.schema}.{self.table}). After validation to some parameters has been added in #37861, when custom query is provided together with schema and table it's being overwritten by default query. I think that custom select_query should always have precedence, when provided.
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