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Compare Contents of two Text Files using Oracle [message #312496]

Wed, 09 April 2008 01:07

JasjotS
Messages: 12
Registered: March 2008
Location: India

Junior Member

I have to compare the contents of two text files and then write the common results to a new text file.
Suppose i have a file A with a pipe(|) delimited data, and file B with only one column of data. Now i want to compare the first delimited data field in file A with the Data in file B and for the common fields add the complete row from file A to a new file C.

e.g File A: QWERTY|T|14128989
MOR |M|98123456
& so on....
File B: TWRYUQ
& so on..

Now we need to compare the first delimited field QWERTY with the data in file B i.e. TWRYUQ and in case of similarity, write the complete row (QWERTY|T|14128989) from file A to file C.

NOTE: I want to automate this algorithm since it has to be used everyday.

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Re: Compare Contents of two Text Files using Oracle [message #312500 is a reply to message #312496]

Wed, 09 April 2008 01:15

Michel Cadot
Messages: 68767
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

Use external tables and SQL.

Regards
Michel

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Re: Compare Contents of two Text Files using Oracle [message #312501 is a reply to message #312500]

Wed, 09 April 2008 01:24

JasjotS
Messages: 12
Registered: March 2008
Location: India

Junior Member

Thanx for reply!!

Is there a way it can be done using oracle and data in text files only, and not using tables?

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Re: Compare Contents of two Text Files using Oracle [message #312560 is a reply to message #312501]

Wed, 09 April 2008 04:38

Michel Cadot
Messages: 68767
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

External table is just a way to declare text file in Oracle to be able to use it in SQL.

http://www.oracle.com/pls/db102/search?remark=quick_search&format=ranked&word=external+table&tab_id=

Regards
Michel

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Re: Compare Contents of two Text Files using Oracle [message #312608 is a reply to message #312560]

Wed, 09 April 2008 07:31

Littlefoot
Messages: 21826
Registered: June 2005
Location: Croatia, Europe

Senior Member
Account Moderator

It's fine with me, but - why would you involve Oracle in something like this? What's wrong with (one of (free?)) operating system tools/programs that allow such things with much less pain?

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