Question

Given the example table below, how can I retrieve the high and low range of the entire group using pure MySQL? Is it possible?

Table:

string    low    high
=====================
abc         1      10
abc        11      20
def         2       5
def         3       6

Basic Query: (Obviously this doesn’t work, but what would?)

SELECT * from `table` GROUP BY `string`;

I want to get here, via MySQL if possible:

string    low    high
=====================
abc         1      20
def         2       6

Answer 1

It’s as simple as:

SELECT string, MIN(low), MAX(high)
  FROM table
 GROUP BY string