Can we join two tables without any relation?

Question

The answer to this question is yes, you can join two unrelated tables in SQL, and in fact, there are multiple ways to do this, particularly in the Microsoft SQL Server database. The most common way to join two unrelated tables is by using CROSS join, which produces a cartesian product of two tables. 27 июл. 2021 г.

Can I join two tables without common column?

3 Answers. We can use the Cartesian product, union, and cross-product to join two tables without a common column.

Can two tables join without foreign key?

A foreign key is not required either. You can construct a query joining two tables on any column you wish as long as the datatypes either match or are converted to match.

How do you join two tables even if no match?

The SQL LEFT JOIN returns all rows from the left table, even if there are no matches in the right table. This means that if the ON clause matches 0 (zero) records in the right table; the join will still return a row in the result, but with NULL in each column from the right table.

Can we join tables without primary key?

Yes we can. No Clause says that for joining of two or more tables there must be a foreign key or primary key constraint.

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