sjwiesman commented on a change in pull request #17264:
URL: https://github.com/apache/flink/pull/17264#discussion_r710289036



##########
File path: 
flink-connectors/flink-connector-jdbc/src/main/java/org/apache/flink/connector/jdbc/dialect/JdbcDialect.java
##########
@@ -83,27 +86,37 @@ default void validate(TableSchema schema) throws 
ValidationException {}
     }
 
     /**
-     * Quotes the identifier. This is used to put quotes around the identifier 
in case the column
-     * name is a reserved keyword, or in case it contains characters that 
require quotes (e.g.
-     * space). Default using double quotes {@code "} to quote.
+     * Quotes the identifier.
+     *
+     * <p>Used to put quotes around the identifier if the column name is a 
reserved keyword or
+     * contains characters requiring quotes (e.g., space). Default using 
double quotes {@code "} to
+     * quote.
+     *
+     * @return the quoted identifier.
      */
     default String quoteIdentifier(String identifier) {
         return "\"" + identifier + "\"";

Review comment:
       Looks like every dialect already overrides this default 🤦 removing




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