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Go Back  dBforums > Data Access, Manipulation & Batch Languages > Perl and the DBI > Extracting a string from a line

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Old 01-02-08, 07:14
J.Poornima J.Poornima is offline
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Extracting a string from a line

Hi Experts,

I want to extract the table name and the database names using perl scripts from a file which contains the following

select D.dept_id,E.emp_name, E.emp_addr from department:t_dept D,employee:t_emp E where D.emp_id = E.dept_id

here department and employee are the database names
and t_dept and t_emp are the tablenames

Thanks in advance.

Regards,
Poornima.
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Old 01-14-08, 10:08
sco08y sco08y is offline
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Join Date: Oct 2002
Location: Fort Polk, LA
Posts: 500
Does this work:

Code:
perl -pe "$_=join(qq{\t}, /\w+:\w+/g).qq{\n};" filename filename ...

If you can manually inspect the results, a regular expression is fine. Otherwise you need to parse the SQL, which is not a trivial matter.
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