Synapse SQL Table Set PK

Introduction

Synapse SQL Table Set PK is a command that allows programmers to set or change the primary key of a table in Synapse SQL. The primary key is a column or a combination of columns that uniquely identify each row in the table. It is a crucial component of a database table as it helps to maintain data integrity and enforce referential integrity between tables.

Syntax

The syntax for the Synapse SQL Table Set PK command is as follows:

synapse sql table set pk
    --table-name <table-name>
    [--column-names <column-names>]

• table-name: The name of the table whose primary key is being set or changed.
• column-names: The name of the column or columns that are being set as the primary key.

Examples

Example 1

To set the primary key of a table called orders to a column called order_id, use the following command:

synapse sql table set pk
    --table-name orders
    --column-names order_id

Example 2

To set the primary key of a table called order_items to a combination of two columns called order_id and item_id, use the following command:

synapse sql table set pk
    --table-name order_items
    --column-names order_id,item_id

Conclusion

In conclusion, Synapse SQL Table Set PK is a useful command for programmers who work with SQL databases. It allows them to set or change the primary key of a table and maintain data integrity. The command is easy to use, and the syntax is straightforward to understand.