Liang-Chi Hsieh created SPARK-19902: ---------------------------------------
Summary: Support more expression canonicalization: Add, Subtract, Multiply and Divide Key: SPARK-19902 URL: https://issues.apache.org/jira/browse/SPARK-19902 Project: Spark Issue Type: Improvement Components: SQL Affects Versions: 2.1.0 Reporter: Liang-Chi Hsieh Current expression canonicalization can't support even simple cases like a + b - b and a which are semantically equal. Since expression canonicalization is used across Spark SQL, more supports can be useful. This patch adds more expression canonicalization support. In particular, it supports the expressions composed of combination of Add and Subtract, and combination of Multiply and Divide. -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org