Using SQL Loader to insert data based on conditionally statements

Question

I would like to use sql loader to insert records from a single text file into an Oracle database table. Sounds easy but the problem is that I need to check the existence of data in another table (Table A) before data can be loaded into Table B.
Table A has two columns: dept_no (primary key value) and dept_name (char)
Table B has five columns: emp_no (primary key value), dept_no (foreign key value to Table A), employee (char), job_title (char) and salary (number)
Text File looks like this:
Finance Jones President 10000
HR Smith Admin 2000
HelpDesk Jenkins Technician 3000
Problem:
1. I need sql loader to insert records into Table B by first checking if the first field in the file is in Table A.
2. If value exists get it's dept_no value.
3. If value doesn't exist discard record ( I might want to have sql loader insert a new record for this into Table A)
4. Using value from #2, insert the value in Table B for dept_no column.
5. Also assign a sequence value for the emp_no value in Table B.
Any guidance is greatly appreciated.
Thanks,

Answer 1

Hello,
I am not sure this is possible with SQL loader. I would rather use an external table based on your file.
Then, I would use SQL to load your data into your table, based on your conditions.
Your request is not very complicated, writing the SQL to do that will be really more simple than trying to do it with SQL loader.
Hope it will help.
Regards,
Sylvie