Question

I want to select all rows from my database where the id is equal to either 1,6 or 7.

How can I specify multiple conditions in the query statement?

Answer 1

You can use OR operations, or for the id choices, an IN () clause is appropriate:

SELECT col1, col2 FROM tbl WHERE id IN (1,6,7)

If you required conditions on different columns, you would use logical OR or AND:

-- either or...
SELECT col1, col2 FROM tbl WHERE col1 = 'someval' OR col2 = 'someotherval'
-- both conditions met...
SELECT col1, col2 FROM tbl WHERE col1 = 'someval' AND col2 = 'someotherval'