简单代码求解,该怎么解决

简单代码求解
我想代码实现查询数据库，刷选条件不等于1234的分类信息，应如何写。

sql="select top 6 * from p_news where='1234' ORDER BY id DESC"

[解决办法]
sql="select top 6 * from p_news where a <>'1234' ORDER BY id DESC"