Addressed

xuzifu666 · xuzifu666 · commit 7f78e740528f · 2026-03-06T09:59:05.000+08:00
diff --git a/core/src/main/java/org/apache/calcite/util/RelToSqlConverterUtil.java b/core/src/main/java/org/apache/calcite/util/RelToSqlConverterUtil.java
@@ -391,7 +391,7 @@ public static SqlDataTypeSpec getCastSpecAngleBracketArrayType(SqlDialect dialec
   }
 
   /**
-   * Used to ensure that Map types can be correctly converted.
+   * Transformation Map type from {@code MAP<VARCHAR,INTEGER>} to {@code Map<STRING,INTEGER>}.
    */
   public static SqlDataTypeSpec getCastSpecSparkSqlMapType(SqlDialect dialect,
       RelDataType type, SqlParserPos pos) {

Original file line number	Diff line number	Diff line change
`@@ -391,7 +391,7 @@ public static SqlDataTypeSpec getCastSpecAngleBracketArrayType(SqlDialect dialec`
`391`	`391`	`}`
`392`	`392`
`393`	`393`	`/**`
`394`		`- * Used to ensure that Map types can be correctly converted.`
	`394`	`+ * Transformation Map type from {@code MAP<VARCHAR,INTEGER>} to {@code Map<STRING,INTEGER>}.`
`395`	`395`	`*/`
`396`	`396`	`public static SqlDataTypeSpec getCastSpecSparkSqlMapType(SqlDialect dialect,`
`397`	`397`	`RelDataType type, SqlParserPos pos) {`