Basic Oracle Concepts and Programming Question:

Download Job Interview Questions and Answers PDF

How To Run Queries on External Tables?

Oracle Database Interview Question
Oracle Database Interview Question

Answer:

If you have an external table defined as a text file with the ORACLE_LOADER driver, you can add data to the text file, and query the text file through the external table. By default, data fields in the text file should be terminated by ','. The tutorial exercise below shows you how add data to the external table defined in the previous exercise:

>edit /oraclexe/test/ext_ggl_links.txt
1101,www.globalguideline,Link #1,88,07-MAY-06
1110,www.globalguideline,Link #2,88,07-MAY-06

>sqlplus /nolog

SQL> connect HR/globalguideline

SQL> SELECT * FROM ext_ggl_links;
<pre> ID URL NOTES COUNTS CREATED
--------- ---------------- ----------- -------- ---------
1101 www.globalguideline Link #1 88 07-MAY-06
1110 www.globalguideline Link #2 88 07-MAY-06</pre>

Download Oracle Database Interview Questions And Answers PDF

Previous QuestionNext Question
How To Define an External Table with a Text File?How To Load Data from External Tables to Regular Tables?