Question

What is the type of join that keeps all the records in the left table and reaches out to the right table?

1) Inner join
2) Left join
3) Right join
4) Full outer join

Answer 1

A Left join is the type of join that keeps all the records in the left table and optionally matches records in the right table, including null values if there's no match.

Step-by-step explanation:

The type of join that keeps all the records in the left table and optionally matches records in the right table is called a Left join. When performing a Left join, the result will include all records from the left table, even if the join condition does not find any matching records in the right table. In such cases, the result set will contain null values for every column from the right table that does not have a corresponding match.

Here's a brief overview of the other join types mentioned:

• An Inner join returns only the records that have matching values in both tables.
• A Right join keeps all records from the right table and reaches out to the left table.
• A Full outer join returns all records when there is a match in either the left or right table.