Hello,
I want to make a database export with constraints of the tables, but with constraints written at the end of the backup file.
I use MySQL database.
I use $this->dbutil->backup($prefs) but in array $prefs, is any parameter to say "put constraints at the end of backup file" ?
.
For the moment, i have for eaxmple in the backup file :
PHP Code:
//--- first table
CREATE TABLE alpha
..
PRIMARY KEY (`id`),
KEY id1 , ...
CONSTRAINT ... FOREIGN KEY ...
INSERT INTO .....
//-- second table
CREATE TABLE beta
...
PRIMARY KEY (`id`),
KEY id1 , ...
CONSTRAINT ... FOREIGN KEY ...
INSERT INTO .....
// etc...
The problem is when i want to restore my database with this export, because of the foreign keys.
I want to make an export like that foreach table :
- first create table
- insert into table
Only when this is ended, add foreign constraints key on table.
PHP Code:
// first
CREATE TABLE alpha
...
PRIMARY KEY (`id`),
KEY id1 , ...
INSERT INTO ...
//--- second
CREATE TABLE beta
...
PRIMARY KEY (`id`),
KEY id1 , ...
INSERT INTO ...
//-- etc...
//-- end of bakcup file, the constraints
--
-- Constraint for table alpha
--
ALTER TABLE alpha
ADD CONSTRAINT ... FOREIGN KEY (`..`) REFERENCES `.. ON DELETE CASCADE ON UPDATE CASCADE;
ALTER TABLE beta
ADD CONSTRAINT ... FOREIGN KEY (`..`) REFERENCES `.. ON DELETE CASCADE ON UPDATE CASCADE;
ADD CONSTRAINT ... FOREIGN KEY .. REFERENCES ... ON UPDATE CASCADE,
ADD CONSTRAINT `deptcategorie_ibfk_3` FOREIGN KEY (`iddept`) REFERENCES `departement` (`iddept`) ON UPDATE CASCADE,
ADD CONSTRAINT `deptcategorie_ibfk_5` FOREIGN KEY (`idcategorie`) REFERENCES `categorie` (`idcategorie`) ON UPDATE CASCADE;
Thank you for your help
