Question

To a variable called crews_self_merged, merge the crews table to itself on the id column using an inner join, setting the suffixes to '_dir' and '_crew' for the left and right tables respectively. True or False?

Answer 1

To merge the crews table to itself on the id column using an inner join, and set the suffixes as '_dir' and '_crew' for the left and right tables respectively, you can use a SQL query.

Step-by-step explanation:

To merge the crews table to itself on the id column using an inner join and create a variable called crews_self_merged with suffixes of '_dir' and '_crew', you can use the following SQL query:

SELECT c1.*, c2.* FROM crews AS c1 INNER JOIN crews AS c2 ON c1.id = c2.id
SET c1.suffix = '_dir', c2.suffix = '_crew';

This query will join the crews table to itself based on matching id values, and the resulting table will have two sets of columns, one for the left table (with the suffix '_dir') and one for the right table (with the suffix '_crew').