How to add primary key to table in navicat

Steps to add a primary key to a table in Navicat: Select the table, open the table structure, click "Add" in the "Index" tab, select the column to be used as the primary key, set the index type to "Primary Key", and click "OK" ”Create a primary key index

How to add a primary key to a table in Navicat

The process of adding a primary key to a table in Navicat As follows:

Steps:

1. Select the table: In the left navigation bar of Navicat, select the table to which you want to add a primary key.
2. Open table structure: Right-click the table and select "Structure".
3. Add a primary key: In the "Table Structure" window, find the "Index" tab.
4. Click the Add button: On the Index tab, click the Add button to create a new index.
5. Select columns: In the "Column" list, select the column to be the primary key.
6. Set the index type: In the "Index Type" drop-down menu, select "Primary Key".
7. Click OK: Click OK to create the primary key index.

Detailed description:

• Primary key: The primary key is a column or column combination that uniquely identifies each row in the table.
• Index: An index is a data structure used to speed up queries on tables. A primary key index is a special type of index that enforces a unique primary key value for each row in a table.
• Index tab: The "Index" tab displays all indexes for the table, including primary key indexes.
• Column: The column to which the primary key is to be added must have a unique value and cannot be NULL.

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