Counting a particular word in a string

Question

Hi All,
Have a query to find the occurence of a particular word in a string using a query.
ex: str := 'a,b,a,c,d'
search_str := 'a'
=> need to get the number of times 'a' is getting repeated in the string str.
output: 2
Hoping for the best support as always.
Edited by: Aparna16 on Jul 17, 2012 5:55 AM
Edited by: Aparna16 on Jul 17, 2012 5:56 AM

Answer 1

SQL> ed
Wrote file afiedt.buf
  1  with sample_data as
  2  (
  3  select 'aaa,abcdd,abc,abc,asdasd' cola, 'abc' matchCol from dual union all
  4  select 'a,b,a,c,d', 'a' from dual union all
  5  select 'a,b,a,c,d', 'e' from dual  union all
  6  select  'aaa,abcdd,abc,abc,asdasd,abc', 'ab' from dual union all
  7  select  'aaa,abcdd,abc,abc,asdasd,abc', 'abc' from dual
  8  )
  9  select cola, matchcol, length(cola||',') - length(replace(cola||',',matchcol||',',substr(matchcol,2)||','))  cnt
10* from sample_data
SQL> /
COLA                         MAT        CNT
aaa,abcdd,abc,abc,asdasd     abc          2
a,b,a,c,d                    a            2
a,b,a,c,d                    e            0
aaa,abcdd,abc,abc,asdasd,abc ab           0
aaa,abcdd,abc,abc,asdasd,abc abc          3