CODEWITHSUNDEEP
regexoracle-databasematching
Emma
Emma

Reputation: 167

Regex to not apply to start or end of line

I've tried [^A-Za-z0-9]tent[^A-Za-z0-9] .. with multiple combinations of ?+*

as well as something like [^|[^A-Za-z0-9]]tent[[^A-Za-z0-9]|$]

I want to match:

if it makes it easier something like "tenting" can also be a match

I suppose I'm missing something from all the pages I've looked at, but I'm really stuck here. I need to find a search word, at the start, middle or end of a sentence or delimited list. Do I need to do multiple statements?

I was hoping there might be a way to say use this expression but not if it's the start of the line or the end of the line

Upvotes: 0

Views: 120

Answers (1)

DazzaL
DazzaL

Reputation: 21993

with \w (non alpha numeric)

SQL> select str
  2    from (select 'attention' str from dual union all
  3          select 'look at the tent' str from dual union all
  4          select 'tent''s are nice' str from dual union all
  5          select 'something tent something' str from dual union all
  6          select 'camping,tent,outdoors' str from dual)
  7   where REGEXP_LIKE(str, '(\W|^)tent(\W|$)', 'i') ;

STR
------------------------
look at the tent
tent's are nice
something tent something
camping,tent,outdoors

SQL> select str,
  2         case when REGEXP_LIKE(str, '(\W|^)tent(\W|$)', 'i') then 'YES' else 'NO' end matches
  3    from (select 'attention' str from dual union all
  4          select 'look at the tent' str from dual union all
  5          select 'tent''s are nice' str from dual union all
  6          select 'something tent something' str from dual union all
  7          select 'tent' str from dual union all
  8          select 'camping,tent,outdoors' str from dual);

STR                      MAT
------------------------ ---
attention                NO
look at the tent         YES
tent's are nice          YES
something tent something YES
tent                     YES
camping,tent,outdoors    YES

Upvotes: 3

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