Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/10723#discussion_r50361028
--- Diff:
sql/catalyst/src/main/antlr3/org/apache/spark/sql/catalyst/parser/SparkSqlParser.g
---
@@ -648,6 +653,12 @@ import java.util.HashMap;
}
private char [] excludedCharForColumnName = {'.', ':'};
private boolean containExcludedCharForCreateTableColumnName(String
input) {
+ if (input.length() > 0) {
+ if (input.charAt(0) == '`' && input.charAt(input.length() - 1) ==
'`') {
+ // When column name is backquoted, we don't care about excluded
chars.
+ return false;
+ }
+ }
--- End diff --
As comment said, when we use specify column names in backquotes, we can use
these excluded chars.
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