Support DuckDB MAP(key, value) column type

DuckDB parameterises a type with other types, e.g. MAP(VARCHAR, INTEGER).
Type arguments previously accepted identifiers and literals but not data
type tokens.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EqinwHBKuAtPEmtXr3b5P2

Author: hayssams

src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt

@@ -13846,6 +13846,9 @@ ColDataType ColDataType():
                 |
                 tk=<S_IDENTIFIER>
                 |
+                // DuckDB parameterises types with other types: MAP(VARCHAR, INTEGER)
+                tk=<DATA_TYPE>
+                |
                 tk=<K_CHAR>
             )
             )

src/test/java/net/sf/jsqlparser/statement/select/DuckDBTest.java

@@ -11,6 +11,7 @@
 
 import net.sf.jsqlparser.JSQLParserException;
 import net.sf.jsqlparser.schema.Table;
+import net.sf.jsqlparser.statement.create.table.CreateTable;
 import net.sf.jsqlparser.test.TestUtils;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
@@ -91,4 +92,29 @@ void testAntiRemainsUsableAsIdentifier() throws JSQLParserException {
         String sqlStr = "SELECT anti FROM t anti";
         TestUtils.assertSqlCanBeParsedAndDeparsed(sqlStr, true);
     }
+
+    @Test
+    void testMapColumnType() throws JSQLParserException {
+        String sqlStr = "CREATE TABLE t (m MAP(VARCHAR, INTEGER))";
+        CreateTable createTable =
+                (CreateTable) TestUtils.assertSqlCanBeParsedAndDeparsed(sqlStr, true);
+
+        Assertions.assertEquals("MAP",
+                createTable.getColumnDefinitions().get(0).getColDataType().getDataType());
+        Assertions.assertEquals(java.util.Arrays.asList("VARCHAR", "INTEGER"),
+                createTable.getColumnDefinitions().get(0).getColDataType()
+                        .getArgumentsStringList());
+    }
+
+    @Test
+    void testMapCast() throws JSQLParserException {
+        String sqlStr = "SELECT CAST(m AS MAP(VARCHAR, INTEGER)) FROM t";
+        TestUtils.assertSqlCanBeParsedAndDeparsed(sqlStr, true);
+    }
+
+    @Test
+    void testDecimalTypeArgumentsStillParse() throws JSQLParserException {
+        String sqlStr = "CREATE TABLE t (a DECIMAL(10, 2), b VARCHAR(255))";
+        TestUtils.assertSqlCanBeParsedAndDeparsed(sqlStr, true);
+    }
 }