Question

I have some code to get a group of results from mysql, please see below,

SELECT string, COUNT(string) as myCount 
FROM ip_stats WHERE string != '' OR string IS NOT NULL 
GROUP BY string 
ORDER BY myCount DESC 
LIMIT 10

Now this code works perfectly, however when i add another where clause as below it returns the same results and seems to be completley ignoring the member = section of the where claus?

SELECT string, COUNT(string) as myCount 
FROM ip_stats WHERE member_id = '000826' string != '' OR string IS NOT NULL 
GROUP BY string 
ORDER BY myCount DESC 
LIMIT 10

Any ideas or advice is appreciated.

Answer 1

This doesn’t make sense, so I think it may not be what you want:

WHERE string != '' OR string IS NOT NULL

string IS NOT NULL will return all non-null values (including ”).

I’m guessing that you want to exclude both empty string and null string values, in which case this is probably the query you want:

SELECT string, COUNT(string) as myCount 
FROM ip_stats 
WHERE member_id = '000826' 
AND string IS NOT NULL 
AND string != '' 
GROUP BY string 
ORDER BY myCount DESC 
LIMIT 10