gatorsmile commented on a change in pull request #24749: [SPARK-27890][SQL]
Improve SQL parser error message for identifier with hyphens
URL: https://github.com/apache/spark/pull/24749#discussion_r289942682
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File path:
sql/catalyst/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBase.g4
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@@ -122,7 +126,7 @@ statement
| ALTER (TABLE | VIEW) tableIdentifier
UNSET TBLPROPERTIES (IF EXISTS)? tablePropertyList
#unsetTableProperties
| ALTER TABLE tableIdentifier partitionSpec?
- CHANGE COLUMN? identifier colType colPosition?
#changeColumn
+ CHANGE COLUMN? errorCapturingIdentifier colType colPosition?
#changeColumn
Review comment:
To the Spark SQL expert like us, this error message is very simple to
understand. :-) However, that might not be true for our end users, who might
not understand this.
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