Hi!
My name is Valentin and I am writing to you for the following problem:
I created a database containing the table:
CREATE TABLE `documents_ex` (
`ID` int(10) unsigned NOT NULL AUTO_INCREMENT,
`Journal_ex_ID` int(10) unsigned DEFAULT NULL,
`Documents_ID` int(10) unsigned DEFAULT NULL,
`Data` datetime DEFAULT NULL,
`Nr` varchar(50) DEFAULT NULL,
PRIMARY KEY (`ID`),
UNIQUE KEY `Journal_ex_ID` (`Journal_ex_ID`,`Documents_ID`,`Data`,`Nr`),
KEY `Documents_ID` (`Documents_ID`),
CONSTRAINT `documents_ex_ibfk_1` FOREIGN KEY (`Journal_ex_ID`) REFERENCES
`journal_ex` (`ID`) ON DELETE CASCADE,
CONSTRAINT `documents_ex_ibfk_2` FOREIGN KEY (`Documents_ID`) REFERENCES
`documents` (`ID`) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=latin1
After some time I decided to drop 'Journal_ex_ID' column and all its
environment from this non empty table.
All I tried to do like:
alter table documents_ex drop column Journal_ex_ID
or
alter table documents_ex drop foreign key Journal_ex_ID
or
alter table documents_ex drop key Journal_ex_ID
I receive the same error 150 and I don't know what to do.
Please help me.
Best regards.
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