后台日志一次处理1000个的时候出现错误

出现的错误代码是：

MySQL Error
Message: MySQL Query Error
SQL: SELECT blogid FROM uchome_blog b, uchome_blogfield bf WHERE 1 AND bf.blogid=b.blogid AND bf.message LIKE BINARY '%%.com%%' ORDER BY b.blogid DESC LIMIT 0,1000
Error: Column: 'blogid' in field list is ambiguous
Errno.: 1052
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