Question

Which type of SQL JOIN returns all rows from both tables involved, placing NULLs in columns where there is no matching row on the other side?

Q: Answer-Which type of SQL JOIN returns all rows from both tables involved, placing NULLs in columns where th...

A FULL OUTER JOIN returns all rows from both the left and right tables, matching rows where possible and filling in NULLs for columns from whichever table has no corresponding match. An INNER JOIN returns only rows with matches in both tables. A LEFT JOIN returns all rows from the left table plus matched rows from the right NULLs where unmatched. A RIGHT JOIN does the reverse. A CROSS JOIN produces the Cartesian product of both tables and is unrelated to matching on a condition.