At times, when you want to compute the result of a mathematical formula, you can use MySQL to do the task. It is a great tool for this. Here are a few examples:
Query:
SELECT PI();
Output:
+------------+
| PI() |
+------------+
| 3.141593 |
+------------+
Query:
SELECT PI() * 7;
Output:
+------------+
| PI() * 7 |
+------------+
| 21.991149 |
+------------+
Query:
SELECT 399*12/4, 6*12;
Output:
+------------+------------+
| 399*12/4 | 6*12 |
+------------+------------+
| 1197.0000 | 72 |
+------------+------------+
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