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A trigger to give a 10 per cent discount to a regular customer

3128080Dec 17 2015 — edited Dec 17 2015

Hi,

I am trying to create a trigger to give a discount of 10% of the field 'totalCost' in the bookings table, if the 'statusname' is regular in the Passengers table. Below is what I have come up with so far. But I know its wrong. Can you please help? 

create or replace TRIGGER Ten_Percent_Discount 


BEFORE UPDATE ON Bookings


FOR EACH ROW


BEGIN


UPDATE Bookings b


SET b.TotalCost = 0.10 * TotalCost


WHERE Passengers.StatusName = 'Regular';


END;

Thanks,

Fareedh
This post has been answered by PamNL on Dec 17 2015
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Comments

top.gun

OMG - where do I start!

If you are using Oracle for commercial purposes then you or your client needs a licence from Oracle. So really you should stop now.

Once you have your licence from Oracle, you can do a simulated import (ie show metadata) like this:

imp ar/live show=y statistics=none buffer=100000 feedback=100000 log=/gers/live/tmp/CUST_190312.log file=/gers/live/tmp/CUST_190312.dmp

Then if the above works you can do the real import (ie metadata and data) like this:

imp ar/live full=y statistics=none buffer=100000 feedback=100000 log=/gers/live/tmp/CUST_190312.log file=/gers/live/tmp/CUST_190312.dmp

Dean Gagne-Oracle

You can always use

imp help=y

to give you the available commands and options.  If you only want the data, then you can use:

imp user/password file=your_file.dmp rows=y

Hope this helps.

Dean

Lisa-Oracle

Hi AJVinkles,

You need to add ignore=y since the table pre-exists

Using IGNORE=y instructs Oracle to ignore any creation errors during the import

and permit the import to complete.

imp user/password file=  log= FROMUSER= TABLES=  ignore=y

rows=y as stated above is the default so it is not needed in the command

Regards,

Lisa

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Locked on Jan 14 2016
Added on Dec 17 2015
#trigger
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