SQL Vertical Merge: Using UNION ALL

In SQL, you can use the UNION ALL statement to vertically merge two tables. The specific syntax is as follows:

SELECT * FROM table1
UNION ALL
SELECT * FROM table2;

“Table1 and Table2 are the two tables that need to be merged. By using UNION ALL, all the data from both tables can be merged together without removing duplicates. If you want to remove duplicates, you can use the UNION statement, but it may slightly impact performance.”