SQLColumnDefinition属性定义的问题

[scyiqie]

mysql5.7语法：
data_type [GENERATED ALWAYS] AS (expression)
[VIRTUAL | STORED] [NOT NULL | NULL]
[UNIQUE [KEY]] [[PRIMARY] KEY]
[COMMENT 'string']
在SQLColumnDefinition中定义的却是sorted。

MySqlOutputVisitor的visit方法中也应新增
if (x.isVirtual()) {
print0(ucase ? " VIRTUAL" : " virtual");
}

    if (x.isStored()) {
        print0(ucase ? " STORED" : " stored");
    }

[wenshao]

https://github.com/alibaba/druid/releases/tag/1.1.10
问题修复，请用新版本