I have a table like this:
> URL
> ------------------------------------------------
> http://www.example.com
> http://www.example.com/one
> http://www.example.com/one/two/abc.txt
> http://www.example.com/three/four
> http://www.example.com/five/six/seven/def.txt
I wonder if I can use a single SQL query which could count the occurrences of the URL pattern and output the result as below:
> URL PATTERN | COUNT
> --------------------------------------------------------------------------
> http://www.example.com/ | 5
> http://www.example.com/one/ | 2
> http://www.example.com/one/two/ | 1
> http://www.example.com/three/ | 1
> http://www.example.com/three/four/ | 1
> http://www.example.com/five/ | 1
> http://www.example.com/five/six/ | 1
> http://www.example.com/five/six/seven/ | 1
Is it possible to write it in SQL (MySQL)?
Thanks.
for example :
update table_b set
count = (select count(url)
from table_a where url like "http://www.example.com/%")
where url_pattern = "http://www.example.com/"
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