Database Reference
In-Depth Information
▼
Output
+----------------+------------+
| prod_name | prod_price |
+----------------+------------+
| Detonator | 13.00 |
| Bird seed | 10.00 |
| Carrots | 2.50 |
| Fuses | 3.42 |
| Oil can | 8.99 |
| Safe | 50.00 |
| Sling | 4.49 |
| TNT (1 stick) | 2.50 |
| TNT (5 sticks) | 10.00 |
+----------------+------------+
New Term
OR
A keyword used in a
WHERE
clause to specify that any rows matching either of the
specified conditions should be retrieved.
WHERE
clauses can contain any number of
AND
and
OR
operators. Combining
the two enables you to perform sophisticated and complex filtering.
But combining
AND
and
OR
operators presents an interesting problem. To dem-
onstrate this, look at an example. You need a list of all products costing
10
or
more made by vendors
1002
and
1003
. The following
SELECT
statement uses
a combination of
AND
and
OR
operators to build a
WHERE
clause:
▼
Input
SELECT prod_name, prod_price
FROM products
WHERE vend_id = 1002 OR vend_id = 1003 AND prod_price >= 10;
▼
Output
+----------------+------------+
| prod_name | prod_price |
+----------------+------------+
| Detonator | 13.00 |
| Bird seed | 10.00 |
| Fuses | 3.42 |
| Oil can | 8.99 |
| Safe | 50.00 |
| TNT (5 sticks) | 10.00 |
+----------------+------------+
