Yesheng Ma created SPARK-27903: ---------------------------------- Summary: Improve parser error message for mismatched parentheses in expressions Key: SPARK-27903 URL: https://issues.apache.org/jira/browse/SPARK-27903 Project: Spark Issue Type: Sub-task Components: SQL Affects Versions: 3.0.0 Reporter: Yesheng Ma
When parentheses are mismatched in expressions in queries, the error message is confusing. This is especially true for large queries, where mismatched parens are tedious for human to figure out. For example, the error message for {code:sql} SELECT ((x + y) * z FROM t; {code} is {code:java} mismatched input 'FROM' expecting ','(line 1, pos 20) {code} One possible way to fix is to explicitly capture such kind of mismatched parens in a grammar rule and print user-friendly error message such as {code:java} mismatched parentheses for expression 'SELECT ((x + y) * z FROM t;'(line 1, pos 20) {code} -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org