Can SQL table have multiple columns with primary key?
34609
How can I define a composite primary key in SQL?
73190
sql primary key and index
18269
SQL MAX of multiple columns?
84126
Database design - many-to-many relationship between three columns
73508
RDBMS: Proper way to store data - comma separated variables or in different fields or tables?
151103
mysql extra columns with same name from two tables
46694
Foreign key referring to primary keys across multiple tables?
63727
How can I write SQL for a table that shares the same name as a protected keyword in MySql?
16236
Is it possible to enforce unique values in a column, excluding nulls?
127502
Oracle SQL, concatenate multiple columns + add text
47564
Foreign Key column mapped to multiple primary keys
30463
Are you allowed to use numbers as table names in MySQL?
29367
T-SQL stored procedure that accepts multiple Id values
58
How can you have two auto-incremental columns in one table?
141717
Dynamic SQL to generate column names?
14056
SQL multiple column ordering
105896
Finding a Primary Key Constraint on the fly in SQL Server 2005