Problem: Find out if an entire string is numeric. (Just like the is_numeric function in php.)
Problem, Part II: Most online resources show how you can find out if part of your string is numeric.
Solution:
SELECT str FROM tbl
WHERE str REGEXP('(^[0-9]+$)');Give it a whirl!
For those who would like to view some test results, here goes:
mysql> SELECT str FROM tbl;
+-----+
| str |
+-----+
|
PlanetMySQL Voting: Vote UP / Vote DOWN
PlanetMySQL Voting: Vote UP / Vote DOWN