improve sqlwall

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/statement/MySqlCreateTableStatement.java

@@ -44,6 +44,8 @@ public class MySqlCreateTableStatement extends SQLCreateTableStatement implement
 
     private List<SQLCommentHint>   hints        = new ArrayList<SQLCommentHint>();
 
+    private List<SQLCommentHint>   optionHints  = new ArrayList<SQLCommentHint>();
+
     private SQLExprTableSource     like;
 
     public MySqlCreateTableStatement(){
@@ -156,4 +158,12 @@ public class MySqlCreateTableStatement extends SQLCreateTableStatement implement
         }
 
     }
+
+    public List<SQLCommentHint> getOptionHints() {
+        return optionHints;
+    }
+
+    public void setOptionHints(List<SQLCommentHint> optionHints) {
+        this.optionHints = optionHints;
+    }
 }

src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlCreateTableParser.java

@@ -559,7 +559,10 @@ public class MySqlCreateTableParser extends SQLCreateTableParser {
             SQLSelect query = new MySqlSelectParser(this.exprParser).select();
             stmt.setQuery(query);
         }
-
+        
+        while (lexer.token() == (Token.HINT)) {
+            this.exprParser.parseHints(stmt.getOptionHints());
+        }
         return stmt;
     }
 

src/main/java/com/alibaba/druid/sql/dialect/mysql/visitor/MySqlOutputVisitor.java

@@ -497,6 +497,10 @@ public class MySqlOutputVisitor extends SQLASTOutputVisitor implements MySqlASTV
             decrementIndent();
         }
 
+        for (SQLCommentHint hint : x.getOptionHints()) {
+            print(' ');
+            hint.accept(this);
+        }
         return false;
     }