Searching substring in PostgreSQL

Question

I have a POstgreSQL 8.4. I have a table and i want to find a string in one row (character varying datatype) of this table using substring (character varying datatype) returned b

Answer 1

Use like any :

SELECT  uchastki.kadnum
FROM  uchastki
WHERE kadnum LIKE  ANY(
   SELECT str
   FROM test
WHERE str IS NOT NULL)

Or perhaps:

SELECT  uchastki.kadnum
FROM  uchastki
WHERE kadnum LIKE  ANY(
   SELECT '%' || str || '%'
   FROM test
WHERE str IS NOT NULL)

this is a nice feature, You can use different operators, for example = any (select ... ), or <> all (select...).