Suppose if you have some records already inserted in the database table and you wanted to add few more records to the same table, in this case you will need this option to append the record. Most of the time, you will be not in a position to truncate the table and reinsert the data to the table because the available volume of the data in the table might be huge or it might have used or referenced for some other purpose. In such situations you can use below mentioned method to append the data.
STEVE JAMES Thank You once again. Regards, Rohit K. SantoshCA September 4, , am. Jurgen October 26, , am. Kind regards, Jurgen. Mahes Tripathi November 6, , am. Hi All, I have a flatfile notepad , which has data not in order, fields separated by space, that too not orderly separated. Thanks souji. Kenneth Y January 10, , pm. Dhawal Limbuwala January 24, , am. Imteyaz March 14, , pm. Naveen March 29, , pm. Great Explanation , simple and clear. Naresh April 5, , am.
Can anyone tell me how to load it…. Ashok May 13, , pm. Praveen Kumar July 23, , pm. The article is very good and easily understandable. Nice explanation…, thank you so much! Muhd Islam August 24, , pm. Gauthama P August 28, , am. Shivanand September 11, , am. Vivek V September 27, , am. Aabid October 17, , am.
CRP October 23, , pm. Greate article, thank you for sharing. Prasad October 29, , am. Satya October 31, , am. Very Nice!!!!!! BUT how to load default value to a field. Uday November 28, , am. I got it. Rajiv January 9, , am. Thank u so much…. Prasanna Suri March 17, , am. Nice way to explain the things…. Tushar Sharma April 16, , am. Hi, Thanks for great article, Is there any way to write control file with update statements.
Thanks -Tushar. Ayaz April 18, , am. Mayur June 2, , am. Pratibha June 9, , am. Tushar June 20, , pm. Vinoth June 30, , am. Simple and Best.. Easy to Learn.
Sudhakar July 11, , am. Hi All, Thanks for the wonderful sharing. All rights reserved. U forgot to mension insert command before into. Anonymous July 30, , pm. SheFixesThings December 24, , pm. Thank you. Ramana December 30, , am. Anonymous May 15, , am. I really loved it.. Anonymous May 18, , am. Good article!!! Good explanation with examples!! Vivek June 11, , pm. Lajpat Kurdiya July 23, , am. Bhaskar Reddy August 5, , am. Good article with examples.
Every one can understand easily. Pravin Singh August 27, , am. Vaibhav September 21, , pm. Anonymous October 6, , am. Awesome tutorial……….. There will be a convention, that the first field in the file is always the PK of the table. When we splitt the file and create several external tables we can merge more than one table at a time ok we could do that without splitting and for example if TABLE2 has only rows in the file, we would have to fullscan the whole 1 Million rows file and eventually its associated 10 Million rows table - just for changes.
Splitting the file will enable us to avoid that, and we can set propper statistics because the splitprogram knows how many rows are existing for a certain table. October 22, - am UTC. So, you still have the same amount of data to process, you would just process the target over and over and over and over Inside function use Autonomous Transactions.
In your case, you would be faster, better, easier loading into a view with instead of triggers. The big file contains data for different tables Every row has the Tablename where the data belongs to as the first column in it.
We split the big file into smaller files which then contains only the data for one table. October 22, - pm UTC. I find the answer useful to me very much. In fact, it changed the view of the logic i am thinking so far. Reader, December 13, - am UTC. I need to update the existing records if they are present or I need to insert the record if the records are not present.
December 13, - am UTC. Merge emob, December 13, - am UTC. The part I'm missing is how to: what to do if, when matched, do nothing? I only want to insert new recs, not update. Reader, December 13, - pm UTC. Followup: You said: if it is a match by email and then if nothing found b match by phone number and then if nothing found c insert not really. December 14, - pm UTC.
0コメント