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RegExp oracle

Posted on 2015-02-08
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Last Modified: 2015-02-09
Hi I have a requirement to write a query to just only retrieve number i
tried regexp_substr but no luck.


example data

1.1.test
1.2.testtt
1.3.tetsttt

i want to get only the number but not the string
the string should be eliminated.
please help
thanks.
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Question by:Sarma Vadlamani
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5 Comments
 
LVL 76

Expert Comment

by:slightwv (䄆 Netminder)
ID: 40597386
If the expected results are:
1.1
1.2
1.3

Try this:
rtrim(regexp_substr(col1,'^[0-9.]*'),'.')
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LVL 37

Expert Comment

by:Gerwin Jansen
ID: 40597391
Try this:

select regexp_substr ('1.3.tetsttt','[0-9]*\.[0-9]*') from dual;

result:

1.3

http://sqlfiddle.com/#!4/d41d8/40499
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Author Comment

by:Sarma Vadlamani
ID: 40598162
thanks it is working.
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LVL 76

Accepted Solution

by:
slightwv (䄆 Netminder) earned 500 total points
ID: 40598196
If the data is always as you have posted and you want everything up to the second period, this might be more efficient (regular expressions are an expensive operation):

substr(col1,1,instr(col1,'.',1,2)-1)
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LVL 37

Expert Comment

by:Gerwin Jansen
ID: 40598308
Great ;) Which solution was working when you wrote the thanks comment? You chose the comment after that one as a solution?
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