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If you're asking if a table can have multiple columns as a primary key, then for MS SQL Server, the answer is yes, and it's called a composite (corrected) key.
18 Αυγ 2019 · A composite primary key is a primary key consisting of multiple columns. Microsoft usually refers to these as multicolumn primary keys in its documentation. This article provides an example of creating a composite primary key using Transact-SQL in SQL Server.
A primary key is a column or a group of columns that uniquely identifies each row in a table. You create a primary key for a table by using the PRIMARY KEY constraint. If the primary key consists of only one column, you can define use PRIMARY KEY constraint as a column constraint: pk_column data_type PRIMARY KEY, ...
Operation. A PRIMARY KEY can be defined on a column or multiple columns while creating a table or later. It is also possible to drop a PRIMARY KEY in a table if not required. SQL Server PRIMARY KEY Syntax.
22 Φεβ 2022 · Create Primary Key on Multiple Columns in SQL Server. In our examples, we created Primary Keys on single columns. If we want to create Primary keys on multiple columns, we need a different syntax. To add multiple columns as part of the Primary Key, we need to simply add comma-separated values of the column names that should be part of the ...
18 Απρ 2024 · In Table Designer, select the row selector for the database column you want to define as the primary key. If you want to select multiple columns, hold down the CTRL key while you select the row selectors for the other columns. Right-click the row selector for the column and select Set Primary Key.
10 Σεπ 2011 · SQL Server Primary Key. By: Armando Prato. Overview. Every table should have a primary key. A primary key is a unique, non-null value that identifies a row in the database. One of the most highly debated topics in the SQL Server world is deciding what type of data best makes a primary key. Explanation.
