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Extracting Specific String

Posted on 2016-07-21
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Last Modified: 2016-07-21
Hello Expert,

I need a code snippet that will help in extracting specific text from a string in oracle.  I have attached my sample data here.  I need to extract 2.2.1.0,2.2.1.0 and 2.2.3.8 in that order

diamond CU/2.2.1.0 BatchID/com.diamond.banking.0000 BatchPlatformGroup
diamond CU/2.2.1.0 BatchID/com.diamond.banking.0000 BatchPlatformGroup
diamond Credit Union/2.2.3.8 BatchID/com.diamond.banking00000 BatchPlatformGroup

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Thanks in advance for your help!
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Question by:fb1990
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Expert Comment

by:slightwv (䄆 Netminder)
ID: 41723140
Assuming that is three rows of data try this:
select regexp_substr(mycol,'[0-9.]+') from mytable;
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Expert Comment

by:slightwv (䄆 Netminder)
ID: 41723152
If that is one row in a table, try this:

select regexp_substr(mycol,'/([0-9.]+)',1,level,null,1) from mytable
connect by level <= regexp_count(mycol,'/[^/]+/');
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Expert Comment

by:sdstuber
ID: 41723300
If the pattern you are looking for is a series of 4 digits separated by a period

then try this

select regexp_substr(yourstring,'([0-9]\.){3}[0-9]',1,level) from yourtable
connect by regexp_substr(yourstring,'([0-9]\.){3}[0-9]',1,level)  is not null

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Author Comment

by:fb1990
ID: 41723328
thanks slightwv and sdstuber.  

The pattern that i am looking for is first 4 digit after the first back slash.  from this example diamond CU/2.2.1.0 example, i need to get 2.2.1.0
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Expert Comment

by:slightwv (䄆 Netminder)
ID: 41723335
Any of the posted code should do that.

To be 100% sure:  We still need to know if your sample data is 3 rows in the table or 1?
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Author Comment

by:fb1990
ID: 41723417
sorry... i did not answer that question.

my data is 3 rows.

Thanks.
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Expert Comment

by:slightwv (䄆 Netminder)
ID: 41723427
Then try my fist post instead of the second.  My first post will fail if the credit union name can have a number in it.

Like this:
diamond 1 CU/2.2.1.0 BatchID/com.diamond.banking.0000 BatchPlatformGroup

If that is a possibility, use sdstuber's.  Just remove the recursion.

select regexp_substr(yourstring,'([0-9]\.){3}[0-9]') from yourtable


Now that will fail if you can have data like:
diamond 1.1.1.1 CU/2.2.1.0 BatchID/com.diamond.banking.0000 BatchPlatformGroup

If that is a possibility and you really need it after the slash, let us know.
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Author Comment

by:fb1990
ID: 41723562
i cannot have data like this diamond 1.1.1.1 CU/2.2.1.0 BatchID/com.diamond.banking.0000 BatchPlatformGroup

But, i can have data like
diamond 1 CU/2.2.1.0 BatchID/com.diamond.banking.0000 BatchPlatformGroup

or
diamond 1 Credit Union/2.2.1.0 BatchID/com.diamond.banking.0000 BatchPlatformGroup
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Expert Comment

by:slightwv (䄆 Netminder)
ID: 41723565
OK then, go with my altered version of what sdstuber posted.
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Accepted Solution

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sdstuber earned 500 total points
ID: 41723566
then

SELECT REGEXP_SUBSTR(yourstring, '([0-9]\.){3}[0-9]')  from yourtable

will work


what that search does is:

find the first set of 3 digits followed by a period  (for example:   1.2.3.)
that is then followed by another digit   (1.2.3.4)

so,

2.2.1.0  would be found
1 would be skipped
1234 would be skipped
1.2.3  would be skipped
1.2.3.  would be skipped
1..2.3.  would be skipped
1.2.3.x  would be skipped
12.34.56.78  would be skipped

is that what you want?
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Author Closing Comment

by:fb1990
ID: 41724014
Thank you slightwv nd sdstuber.  The solution provided by sdstuber worked like a charm
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