问题描述
-edit2- 3小时后，仍然存在相同的问题.我正在使用noinstall存档软件包.-edit-也许有人可以告诉我一种检查表是否存在的更好方法?
-edit2- 3hrs later and still have the same problem. I am using the noinstall archive package.-edit- maybe someone can tell me a better way to check if a table exist?
我的库中有一个函数来检查是否存在一个表，该表过去我曾问过要怎么做.
I have a function in my lib to check if a table exist which i asked how to do in the past.
我删除了数据库，然后再次创建了它.我的代码没有正确创建表.调试后，我决定编写以下内容.
I deleted my database and created it again. My code didnt create the tables properly. After debugging i decided to write the below.
mysql> SELECT table_schema, table_name FROM information_schema.tables WHERE tabl
e_schema = 'mydb' AND table_name='ApprovePost';
+--------------+-------------+
| table_schema | table_name |
+--------------+-------------+
| mydb | ApprovePost |
+--------------+-------------+
1 row in set (0.00 sec)
很奇怪... mydb被删除并再次创建(我写了drop database mydb;和create database mydb;.应该消失了吗?).让我们找出存在的东西
Weird... mydb was dropped and created again (i wrote drop database mydb; and create database mydb;. It should be gone?). Lets find out what exists
mysql> SELECT table_schema, table_name FROM information_schema.tables WHERE tabl
e_schema = 'mydb';
Empty set (0.00 sec)
我不仅不知道为什么第一条语句显示的表破坏了我的代码，而且我不知道为什么它不显示任何表(在该数据库中).
Not only do i not know why the first statement shows tables which is wrecking my code, i dont know why this is not showing any tables (in that database).
注意:数据库都应该是innodb.另外，这是全新的Windows安装，我可能配置有误.
note: The databases should all be innodb. Also this is a fresh windows install and i may have configured something wrong.
奖金怪异.
mysql> drop database mydb;
ERROR 1008 (HY000): Can't drop database 'mydb'; database doesn't exist
mysql> SELECT table_schema, table_name FROM information_schema.tables WHERE tabl
e_schema = 'mydb';
Empty set (0.00 sec)
mysql> SELECT table_schema, table_name FROM information_schema.tables WHERE tabl
e_schema = 'mydb' AND table_name='ApprovePost';
+--------------+-------------+
| table_schema | table_name |
+--------------+-------------+
| mydb | ApprovePost |
+--------------+-------------+
1 row in set (0.00 sec)
推荐答案
好像您需要对INFORMATION_SCHEMA.TABLES使用FLUSH TABLES命令以反映现有表.
Looks like you need to use the FLUSH TABLES command for the INFORMATION_SCHEMA.TABLES to reflect existing tables.
参考:
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