How can SQL combine multiple tables into one table?

In SQL, you can combine multiple tables into one using the JOIN statement. JOIN allows you to merge tables based on the relationship conditions between two or more tables, creating a new result set.

For example, let’s say we have two tables, A and B. Table A has fields a1 and a2, and table B has fields b1 and b2. If there is a condition linking these two tables, you can merge them into one table using the following statement:

SELECT A.a1, A.a2, B.b1, B.b2
FROM A
JOIN B ON A.a1 = B.b1;

In the example above, a JOIN statement is used to connect Table A’s field a1 with Table B’s field b1, creating a merged result set that includes both fields from Table A and Table B.