SQL error #1452 - Cannot add or update a child row: a foreign key constraint fails (`mydb`)
59387
error altering table, adding constraint foreign key getting error "Cannot add or update a child row"
82138
What does mysql error 1025 (HY000): Error on rename of './foo' (errorno: 150) mean?
60528
What's wrong with foreign keys?
60646
What is the error "Every derived table must have its own alias" in MySQL?
14137
Why isn't my SQL query to insert a table row working properly?
1556
Syntax error due to using a reserved word as a table or column name in MySQL
107263
Why saving changes to a database fails?
145442
SQL Server: Cannot insert an explicit value into a timestamp column
155109
Foreign key constraint may cause cycles or multiple cascade paths?
97744
Setting up foreign keys in phpMyAdmin?
97261
Are nested transactions allowed in MySQL?
20394
Renaming foreign-key columns in MySQL
110393
How to avoid duplicates while updating a MySQL database?
150505
Unable to save the Lead record since Company is a standard required field in salesforce before insert trigger
85789
Not using foreign key constraints in real practice. Is it OK?
74562
ORA-02270: no matching unique or primary key for this column-list
82726
Foreign Key (references) constraint on PostgreSQL Foreign Data Wrapper?