Vous pouvez utiliser plusieurs expressions LIKE :
SELECT fields
FROM table
WHERE age = "50"
AND (
name LIKE "2010-09-17%"
OR name LIKE "2010-09-16%"
);
ou vous pouvez utiliser une regex :
SELECT fields
FROM table
WHERE age = "50"
AND name REGEXP "2010-09-17.*|2010-09-16.*";
ou, astucieusement
SELECT fields
FROM table
WHERE age = "50"
AND name REGEXP "2010-09-1(6|7).*";