bug fix for clickhouse ddl output

src/main/java/com/alibaba/druid/sql/dialect/clickhouse/visitor/ClickhouseOutputVisitor.java

@@ -109,4 +109,31 @@ public class ClickhouseOutputVisitor extends SQLASTOutputVisitor implements Clic
         printAndAccept(x.getColumns(), ", ");
         return false;
     }
+
+    @Override
+    public boolean visit(SQLArrayDataType x) {
+        final List<SQLExpr> arguments = x.getArguments();
+        if (Boolean.TRUE.equals(x.getAttribute("ads.arrayDataType"))) {
+            x.getComponentType().accept(this);
+            print('[');
+            printAndAccept(arguments, ", ");
+            print(']');
+        } else {
+            SQLDataType componentType = x.getComponentType();
+            if (componentType != null) {
+                print0(ucase ? "Array<" : "array<");
+                componentType.accept(this);
+                print('>');
+            } else {
+                print0(ucase ? "Array" : "array");
+            }
+
+            if (arguments.size() > 0) {
+                print('(');
+                printAndAccept(arguments, ", ");
+                print(')');
+            }
+        }
+        return false;
+    }
 }

src/test/java/com/alibaba/druid/bvt/sql/clickhouse/ClickHouseResourceTest.java

@@ -91,6 +91,10 @@ public class ClickHouseResourceTest extends OracleTest {
         exec_test("bvt/parser/clickhouse-13.txt");
     }
 
+    public void test_14() throws Exception {
+        exec_test("bvt/parser/clickhouse-14.txt");
+    }
+
     public void exec_test(String resource) throws Exception {
         System.out.println(resource);
         InputStream is = null;

src/test/resources/bvt/parser/clickhouse-14.txt

@@ -0,0 +1,12 @@
+CREATE TABLE if not exists etda.mytable1
+(
+    `id` UInt64,
+    `action_parameter_uint64_list` Array(UInt64),
+    `action_parameter_string_list` Array(String)
+)
+---------------------------
+CREATE TABLE IF NOT EXISTS etda.mytable1 (
+	`id` UInt64,
+	`action_parameter_uint64_list` Array(UInt64),
+	`action_parameter_string_list` Array(String)
+)