Hello,
What's the difference between:
SELECT count(id) FROM scanns WHERE tipus='esc'; => 11235
SELECT count(pages) FROM scanns WHERE tipus='esc'; => 11165
SELECT count(*) FROM scanns WHERE tipus='esc'; => 11235
Why are some rows that aren't included in the count(pages) SELECT ?
There are not NULL values in the pages field:
SELECT count(pages) FROM scanns WHERE tipus='esc' AND pages IS NOT
NULL; => 11165
SELECT count(pages) FROM scanns WHERE tipus='esc' AND pages IS NULL;
=> 0
And I think the three SELECTS should return the same rows number ...
thanks for your help,
r.
