Question

I inserted some error record to my table, I can query via the sql below and found hundards of record marked with half.

SELECT * FROM `marathon`
WHERE gender = 'male' && distance = 'half';

How to write a SQL then I can modify the result rows distance from ‘half’ to ‘full’.

Thank you.

Answer 1

update marathon
set distance = ‘full’
WHERE gender = ‘male’ and distance = ‘half’;

read http://dev.mysql.com/doc/refman/5.0/en/update.html (mysql update syntax)