rdblue commented on issue #24849: [SPARK-28018][SQL] Allow upcasting decimal to double/float URL: https://github.com/apache/spark/pull/24849#issuecomment-506777340 @gengliangwang, there were two suggestions in the DSv2 sync: * Add a decimal type for SQL literals that can be cast to float because the intended type of the literal is not known, or use some analysis rule that matches literals for the same purpose * Parse literals as floats and insert an implicit cast from float to decimal Both of those options are still valid. I'm surprised to see that decimals can be implicitly cast to float columns in most databases. Is this part of the SQL spec? If so, then I think we can go with that. Otherwise, I'd prefer one of the other options.
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