SQL and PL/SQL


How delele a record in the parent table, as well as the child with a single sql statement?

You must give on delete cascade while creating a foreign key itself. So it will remove child table automatically when you delete the table from the parent table.

CREATE TABLE table_name (column1 datatype null and not null,

Column2 null and not null data type

CONSTRAINT fk_column FOREIGN KEY (column1, column2) REFERENCES parent_table (column1, Column2)

ON DELETE CASCADE ) ;

Tags: Database

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