MySQL - Table does not exist and can not be created - mysql

Question

MySQL 5.5.46 strange error: Table does not exist and can not be created.
Please, can anyone help?
drop table t_example;
Returns: drop table t_example Error Code: 1051. Unknown table 't_example' 0.000 sec
CREATE TABLE t_example(
`id_example` INT UNSIGNED NOT NULL AUTO_INCREMENT,
`des_example` VARCHAR(45) NOT NULL,
`id_example` int unsigned NULL,
PRIMARY KEY (`id_example`))
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8
COLLATE = utf8_general_ci;
Returns: Error Code: 1050. Table 't_example' already exists
select * from t_example;
Returns: Error Code: 1146. Table 't_example' doesn't exist
I'm using:
UBUNTU 14.04 LTS;
mysql Ver 14.14 Distrib 5.5.46, for debian-linux-gnu (x86_64) using readline 6.
I'm using root user.
Tried:
mysql> REPAIR TABLE t_example;
+----------------+--------+----------+--------------------------------------+
| Table | Op | Msg_type | Msg_text |
+ ---------------+--------+----------+--------------------------------------+
| mydb.t_example | repair | Error | Table 'mydb.t_example' doesn't exist |
| mydb.t_example | repair | status | Operation failed |
+----------------+--------+----------+--------------------------------------+
2 rows in set (0.00 sec)
Tried too: sudo mysqladmin flush-tables ... Also not solved the problem!
REAL EXAMPLE:
mysql> use flexible;
Database changed
mysql> select * from st_fin_centro_custo;
ERROR 1146 (42S02): Table 'flexible.st_fin_centro_custo' doesn't exist
mysql> CREATE TABLE st_fin_centro_custo(
-> `cod_centro_custo` INT UNSIGNED NOT NULL AUTO_INCREMENT,
-> `des_centro_custo` VARCHAR(45) NOT NULL,
-> PRIMARY KEY (`cod_centro_custo`))
-> ENGINE = InnoDB
-> DEFAULT CHARACTER SET = utf8
-> COLLATE = utf8_general_ci;
ERROR 1050 (42S01): Table '`flexible`.`st_fin_centro_custo`' already exists
mysql> drop table st_fin_centro_custo;
ERROR 1051 (42S02): Unknown table 'st_fin_centro_custo'
mysql>
Tried get from MySQL information_schema:
mysql> SELECT TABLE_CATALOG, TABLE_SCHEMA, TABLE_TYPE
FROM information_schema.tables
where table_name like 'st_fin_centro_custo';
Empty set (0.00 sec)
mysql>
Note: creating the table with another name works fine.
Thanks a lot!

Answer 1

First select your data base schema by using use command<use schema>.
Then run DROP TABLE IF EXISTS t_example;
After that try to create your table
CREATE TABLE t_example(
`id_example` INT UNSIGNED NOT NULL AUTO_INCREMENT,
`des_example` VARCHAR(45) NOT NULL,
PRIMARY KEY (`id_example`))
ENGINE = INNODB
DEFAULT CHARACTER SET = UTF8
COLLATE = UTF8_GENERAL_CI;
Also don't use duplicate column name.
Another solution is :
Change table name in the create table query, execute it and then rename the table.
Then, you can also drop this table and after it create it without getting error.

Answer 2

It's possible your table is corrupted.
Try REPAIR TABLE t_example;

Answer 3

First of all, try to restart mysqld. If it do not help, try to create this table into another database. Then copy newly created *.frm file to the target database folder. Restart mysqld one more time. Now try to get access/drop/create this table in proper DB.
Edit: How about to drop database and recreate if from the scratch? I hope it's not a production system.