You need to specify the data type of the column along with any potential table constraints and default values to be applied to both existing and new rows. In some databases like MySQL, you can even specify where to insert the new column using the FIRST or AFTER clauses, though this is ...
with: SQLSTATE[HY000]: General error: 1553 Cannot drop index '<unknown key name>': needed in a foreign key constraint For example for this query: alter table `orders` add `what_the_hell` varchar(255) not null It makes absolutely no sense and seems to be an obvious issue with MySQL....
I was trying to alter (ALTER TABLE) a MyISAM table on our production system to add several columns. The table is 13 M and some records and about 2.5 GB in size. The platform is W2k3 with MySQL 4.0.20. After well over an hour of processing, the alter query returns: ...
By default,OPTIMIZE TABLEdoesnotwork for tables created using any other storage engine and returns a result indicating this lack of support. You can makeOPTIMIZE TABLEwork for other storage engines by startingmysqldwith the--skip-newoption. In this case,OPTIMIZE TABLEis just mapped toALTER TABLE...
Bug #70260 Table disappears when ALTERing with foreign key checks off Submitted: 6 Sep 2013 12:03Modified: 6 May 2014 15:27 Reporter: Denis Simonet Email Updates: Status: Closed Impact on me: None Category: MySQL Server: InnoDB storage engineSeverity: S2 (Serious) Version: 5.5.32OS: ...
inquery_mysql.connection.query(self,query)MySQLdb._exceptions.OperationalError:(1833,"Cannot change column 'id': used in a foreign key constraint 'Lori_kalendereintrag_kostenstelle_id_bcd99894_fk_kostenste' of table 'LoriDB.Lori_kalendereintrag_kst'")Theaboveexceptionwasthedirectcauseofthefollowing...
By default,OPTIMIZE TABLEdoesnotwork for tables created using any other storage engine and returns a result indicating this lack of support. You can makeOPTIMIZE TABLEwork for other storage engines by startingmysqldwith the--skip-newoption. In this case,OPTIMIZE TABLEis just mapped toALTER TABLE...
mysql> create tablespace t2 add datafile '/home/mysql_tablespaces/t2.ibd' engine=innodb; Query OK, 0 rows affected (0,00 sec) mysql> alter table sbtest1 tablespace=t2; ERROR 2013 (HY000): Lost connection to MySQL server during query 09:14:30 UTC - mysqld got signal 11 /opt/mysql57...
4.frm' in the database directory under the datadir, you can drop it with DROP TABLE. You do not need to restart the server But you do need to use the prefix`#mysql50#` before the table name and you need to use backticks: DROP TABLE `#mysql50##sql-ib97-1735019704`; The `#...
Now, if I put a "SELECT * FROM test;" or a "SHOW COLUMNS FROM test;" or a "SHOW TABLE STATUS;" between the CREATE TABLE statements and the ALTER TABLE statements, then the SQL executes without errors. However, a "FLUSH TABLES;" does not prevent the error, as the MySQL documentation...