Cannot add or update a child row: a foreign key constraint fails: tablas mal indexadas? 63 error 1452: cannot add or update a child row: a foreign key constraint fails. Mysql foreign key: cannot add or update a child row: a foreign key constraint fails 1 php foreign keys issues - i can't update a database field with a foreign key. Mysql returns the message: cannot add or update a child row: a foreign key constraint fails can anybody tell me what i'm doing wrong? i guess it has something to do with the creation of the 'recept'-table posted. a foreign key constraint fails. dennis van beek. august 25, 2009 02:35pm re: a foreign key constraint fails. shiv m. august.
Cannot add or update a child row: a foreign key constraint fails (`cai0066`.`tblorderitems`, constraint `itemid` foreign key (`itemid`) references `tblcatalogitems` (`itemid`)) notes: it happens when i either insert or update into tblorderitems .. This means that no user-partitioned innodb table may contain foreign key references or columns referenced by foreign keys. innodb allows a foreign key constraint to reference a nonunique key. this is an innodb extension to standard sql.. If both tables are empty, you can define your constraints. if the parent table has data and the child table is empty, you can define your constraints. if, however, as in your case, the child table has data and the parent table is empty, you cannot define your constraints..
