报错啦！
错误号：1064
SQL错误状态：42000
错误信息：You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
sql信息：select keyname,kid from keywords where kid in ()
报错啦！
错误号：1064
SQL错误状态：42000
错误信息：You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
sql信息：select qid,title from kidqid where kid in ()
报错啦！
错误号：1064
SQL错误状态：42000
错误信息：You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
sql信息：select keyname,kid from keywords where kid in ()
报错啦！
错误号：1064
SQL错误状态：42000
错误信息：You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
sql信息：select qid,title from kidqid where kid in ()
报错啦！
错误号：1064
SQL错误状态：42000
错误信息：You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
sql信息：select kid,keyname FROM keywords where kid in ()
2000多支
4000多只
据上交所和深交所网站公布数据
截止到目前，两市共有上市公司2494家，其中上交所954家，深交所1540家。
1500只左右
证监会官方网站会定期公布申请上市企业的名单 在首页“机关部门最新更新”那栏里，可以看到发行部和创业板部分别发布的“首次公开发行股票审核工作流程及申报企业情况”，每半个月更新一次。
巨潮资讯网“拟上市公司清单”栏目
http://www.cninfo.com.cn/disclosure/ipolist.jsp
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