multi-column FKs with NULL values
11467
Differences between MATCH FULL, MATCH SIMPLE, and MATCH PARTIAL?
97744
Setting up foreign keys in phpMyAdmin?
142193
Access: Making a Pivot Table with Multiple, Same Values as Columns
93655
How to prove the lack of implicit order in a database?
131790
SQL Server update primary key that's also a foreign key in two tables
60528
What's wrong with foreign keys?
156694
Mapping empty strings to NULL in NHibernate
99717
Foreign key constraint on array member?
114718
Is there a DBMS that allows the "= NULL" syntax?
40225
Select statement with dynamic columns where these columns are rows in another table
33613
Why is this trigger finding a null value despite the field being populated?
154663
Making a recursive CTE like query, but for many records
31820
Data inconsistency prohibition if a table refers to another via two many-to-many relationships
46729
Add non-nullable columns to an existing table in SQL server?
153310
Composite primary key from multiple tables / multiple foreign keys
79298
Recalculate a Field with data from another field, ignoring NULL values
100019
Why does a UNIQUE constraint allow only one NULL?