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3 cze 2016 · To add a foreign key (referencing vendors table) to the products table, you use the following statement: ALTER TABLE products ADD FOREIGN KEY fk_vendor(vdr_id) REFERENCES vendors(vdr_id) ON DELETE NO ACTION ON UPDATE CASCADE;
ALTER TABLE child_table_name ADD FOREIGN KEY (child_table_column) REFERENCES parent_table_name(parent_table_column); child_table_name is that table in which we want to add constraint. child_table_column is that table column in which we want to add foreign key.
You can add a foreign key constraint to an existing table using the following ALTER TABLE syntax: ALTER TABLE tbl_name ADD [CONSTRAINT [symbol]] FOREIGN KEY [index_name] (col_name, ...) REFERENCES tbl_name (col_name,...) [ON DELETE reference_option] [ON UPDATE reference_option]
To allow naming of a FOREIGN KEY constraint, and for defining a FOREIGN KEY constraint on multiple columns, use the following SQL syntax: ALTER TABLE Orders ADD CONSTRAINT FK_PersonOrder
To create a foreign key in PHPMyAdmin, follow these steps: Open PHPMyAdmin and select the database where you want to create the foreign key. Click on the 'Structure' tab for the database. Click on the 'Relation view' icon. In the 'Relation view' page, you will see a list of tables in the database.
To allow naming of a FOREIGN KEY constraint, and for defining a FOREIGN KEY constraint on multiple columns, use the following SQL syntax: MySQL / SQL Server / Oracle / MS Access: ALTER TABLE Orders. ADD CONSTRAINT FK_PersonOrder.
29 paź 2020 · Setting up foreign key in phpMyAdmin is quite easy. With help of this step by step pictured tutorial, you will be able to set foreign keys within your tables.
