fix:SQLStatement clone方法 oracle使用行列转置piovt 丢失问题

src/main/java/com/alibaba/druid/sql/ast/statement/SQLSubqueryTableSource.java

@@ -16,6 +16,7 @@
 package com.alibaba.druid.sql.ast.statement;
 
 import com.alibaba.druid.sql.ast.SQLName;
+import com.alibaba.druid.sql.dialect.oracle.ast.stmt.OracleSelectSubqueryTableSource;
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
 import java.util.ArrayList;
@@ -73,6 +74,12 @@ public class SQLSubqueryTableSource extends SQLTableSourceImpl {
     public void cloneTo(SQLSubqueryTableSource x) {
         x.alias = alias;
 
+        if (this instanceof OracleSelectSubqueryTableSource) {
+            if (((OracleSelectSubqueryTableSource)this).getPivot() != null) {
+                ((OracleSelectSubqueryTableSource)x).setPivot(((OracleSelectSubqueryTableSource)this).getPivot());
+            }
+        }
+
         if (select != null) {
             x.select = select.clone();
             x.select.setParent(x);

src/test/java/com/alibaba/druid/sql/parser/OraclePivotCloneTest.java

@@ -0,0 +1,54 @@
+package com.alibaba.druid.sql.parser;
+
+import com.alibaba.druid.DbType;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import junit.framework.TestCase;
+
+/**
+ * @author gfChris
+ * @version 1.0
+ * @Description
+ * @date 2022/8/11 下午4:46
+ */
+public class OraclePivotCloneTest extends TestCase {
+
+    public void testCreateCharset() {
+
+        String sql = "Select \n" +
+                "DEPT_ID,\n" +
+                "M01,M02,M03,M04,M05,M06,M07,M08,M09,M10,M11,M12\n" +
+                "from \n" +
+                "(\n" +
+                "Select \n" +
+                "DEPT_ID,CMONTH,\n" +
+                "SUM(SO_TAXMONEY) AS SO_TAXMONEY\n" +
+                "FROM DW_SCM_DIM_SALEDATA\n" +
+                "GROUP BY \n" +
+                "DEPT_ID,CMONTH\n" +
+                ")  \n" +
+                "pivot(\n" +
+                "    sum(SO_TAXMONEY) for CMONTH in (    \n" +
+                "        '01' as M01,                \n" +
+                "        '02' as M02,                \n" +
+                "        '03' as M03,\n" +
+                "        '04' as M04,\n" +
+                "        '05' as M05,\n" +
+                "        '06' as M06,\n" +
+                "        '07' as M07,\n" +
+                "        '08' as M08,\n" +
+                "        '09' as M09,\n" +
+                "        '10' as M10,\n" +
+                "        '11' as M11,\n" +
+                "        '12' as M12\n" +
+                "    )\n" +
+                "  );";
+
+        SQLStatement sqlStatement = SQLUtils.parseSingleStatement(sql, DbType.oracle);
+
+        SQLStatement sqlStatement1 = sqlStatement.clone();
+
+        System.out.println(sqlStatement1.toString());
+    }
+
+}