Fix cast exception issues.

core/src/main/java/com/alibaba/druid/sql/dialect/hive/visitor/HiveASTVisitor.java

@@ -20,6 +20,7 @@
 import com.alibaba.druid.sql.dialect.hive.ast.HiveInsertStatement;
 import com.alibaba.druid.sql.dialect.hive.ast.HiveMultiInsertStatement;
 import com.alibaba.druid.sql.dialect.hive.stmt.HiveCreateFunctionStatement;
+import com.alibaba.druid.sql.dialect.hive.stmt.HiveCreateTableStatement;
 import com.alibaba.druid.sql.dialect.hive.stmt.HiveLoadDataStatement;
 import com.alibaba.druid.sql.dialect.hive.stmt.HiveMsckRepairStatement;
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
@@ -73,4 +74,11 @@ default boolean visit(HiveAddJarStatement x) {
 
     default void endVisit(HiveAddJarStatement x) {
     }
+
+    default boolean visit(HiveCreateTableStatement x) {
+        return true;
+    }
+
+    default void endVisit(HiveCreateTableStatement x) {
+    }
 }

core/src/main/java/com/alibaba/druid/sql/dialect/hive/visitor/HiveOutputVisitor.java

@@ -518,11 +518,19 @@ protected void printTableOptionsPrefix(SQLCreateTableStatement x) {
     }
 
     @Override
-    public boolean visit(SQLCreateTableStatement x) {
-        printCreateTable((HiveCreateTableStatement) x, true, true);
+    public boolean visit(HiveCreateTableStatement x) {
+        printCreateTable(x, true, true);
         return false;
     }
 
+    @Override
+    public boolean visit(SQLCreateTableStatement x) {
+        if (x instanceof HiveCreateTableStatement) {
+            return visit((HiveCreateTableStatement) x);
+        }
+        return super.visit(x);
+    }
+
     protected void printCreateTable(HiveCreateTableStatement x, boolean printSelect,
                                     boolean printCommentAdvance) {
         final SQLObject parent = x.getParent();

core/src/main/java/com/alibaba/druid/sql/dialect/impala/visitor/ImpalaASTVisitor.java

@@ -0,0 +1,12 @@
+package com.alibaba.druid.sql.dialect.impala.visitor;
+
+import com.alibaba.druid.sql.dialect.impala.stmt.ImpalaCreateTableStatement;
+
+public interface ImpalaASTVisitor {
+    default boolean visit(ImpalaCreateTableStatement x) {
+        return true;
+    }
+
+    default void endVisit(ImpalaCreateTableStatement x) {
+    }
+}

core/src/main/java/com/alibaba/druid/sql/dialect/impala/visitor/ImpalaOutputVisitor.java

@@ -12,7 +12,7 @@
 
 import java.util.List;
 
-public class ImpalaOutputVisitor extends HiveOutputVisitor {
+public class ImpalaOutputVisitor extends HiveOutputVisitor implements ImpalaASTVisitor {
     public ImpalaOutputVisitor(StringBuilder appender) {
         super(appender);
         dbType = DbType.impala;
@@ -58,11 +58,18 @@ protected void printCached(SQLCreateTableStatement x) {
     }
 
     @Override
-    public boolean visit(SQLCreateTableStatement x) {
-        printCreateTable((ImpalaCreateTableStatement) x, true, false);
+    public boolean visit(ImpalaCreateTableStatement x) {
+        printCreateTable(x, true, false);
         return false;
     }
 
+    @Override
+    public boolean visit(SQLCreateTableStatement x) {
+        if (x instanceof ImpalaCreateTableStatement) {
+            return visit((ImpalaCreateTableStatement) x);
+        }
+        return super.visit(x);
+    }
     @Override
     protected void printSortedBy(List<SQLSelectOrderByItem> sortedBy) {
         if (sortedBy.size() > 0) {

core/src/main/java/com/alibaba/druid/sql/dialect/odps/visitor/OdpsOutputVisitor.java

@@ -63,6 +63,15 @@ public OdpsOutputVisitor(StringBuilder appender) {
         super(appender, DbType.odps);
     }
 
+    @Override
+    public boolean visit(SQLCreateTableStatement x) {
+        if (x instanceof OdpsCreateTableStatement) {
+            return visit((OdpsCreateTableStatement) x);
+        }
+        return super.visit(x);
+    }
+
+    @Override
     public boolean visit(OdpsCreateTableStatement x) {
         List<SQLCommentHint> headHints = x.getHeadHintsDirect();
         if (headHints != null) {

core/src/main/java/com/alibaba/druid/sql/dialect/spark/visitor/SparkOutputVisitor.java

@@ -9,6 +9,7 @@
 import com.alibaba.druid.sql.ast.SQLObject;
 import com.alibaba.druid.sql.ast.expr.SQLHexExpr;
 import com.alibaba.druid.sql.ast.statement.SQLColumnDefinition;
+import com.alibaba.druid.sql.ast.statement.SQLCreateTableStatement;
 import com.alibaba.druid.sql.ast.statement.SQLSelect;
 import com.alibaba.druid.sql.ast.statement.SQLSelectOrderByItem;
 import com.alibaba.druid.sql.ast.statement.SQLTableElement;
@@ -36,6 +37,15 @@ public SparkOutputVisitor(StringBuilder appender) {
     }
 
     //add using statment
+
+    @Override
+    public boolean visit(SQLCreateTableStatement x) {
+        if (x instanceof SparkCreateTableStatement) {
+            return visit((SparkCreateTableStatement) x);
+        }
+        return super.visit(x);
+    }
+
     @Override
     public boolean visit(SparkCreateTableStatement x) {
         print0(ucase ? "CREATE " : "create ");