sql - Regular expression REGEXP_LIKE -

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please me regular expression:

where regexp_like(dbfield, '*п* 2($| )', 'i')

but find:

"кран № 2 пом. 144" "кр. № 2 пом. 260" ...

i don't understand why find that. must "п" before "2". what's wrong? (db oracle)

regexp п* means symbol "п", repeated 0 or more times
try

where regexp_like(dbfield, 'п.*2($| )', 'i')

or , faster 

where lower(dbfield)||' ' '%п%2 %'

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