Once you know how to create a one-column Primary Key, you can find many articles online explaining how to create multi-column Primary Keys in SQL.Īll of the following examples assume that you know how to connect to your database. This article will deal with the case of using one column as the Primary Key. If no column in the table is suitable to be a Primary key, you can use the Alteryx Record ID tool to create such a column. The values in the target column you’re setting as Primary Key must only have unique values otherwise the database will throw an error. Primary Keys cannot be null and must be unique and therefore assigning a Primary Key at least consists of two steps: setting the column to Not Null and then setting it to be the Primary key. However, a table can only have one Primary Key. Primary Keys can be made up of one or multiple columns in the table in a database table. The value of a unique identifier, among other benefits, is that it improves database performance and allows updates on the records. One such operation is creating a Primary Key for your database table and namely using the Pre-Create SQL and Post- Create SQL options in the Input Data and Output Data tools to do that.Ī Primary Key uniquely identifies a record in a database table.
One of the powerful things about the Alteryx Designer is that you can do most things related to your workflow right from within the workflow itself.
0 kommentar(er)
