Reynold Xin created SPARK-12904:
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Summary: Strength reduction for integer/decimal comparisons
Key: SPARK-12904
URL: https://issues.apache.org/jira/browse/SPARK-12904
Project: Spark
Issue Type: Bug
Components: Optimizer, SQL
Reporter: Reynold Xin
We can do the following strength reduction for comparisons between an integral
column and a decimal literal:
1. int_col > decimal_literal => int_col > floor(decimal_literal)
2. int_col >= decimal_literal => int_col > ceil(decimal_literal)
3. int_col < decimal_literal => int_col < floor(decimal_literal)
4. int_col <= decimal_literal => int_col < ceil(decimal_literal)
This is useful more as soon as we start parsing floating point numeric literals
as decimals rather than doubles (SPARK-12848).
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