generate unique sequential IDS for a record to be displayed in HTML

Hello

How do you have

generate unique sequential IDS for a record to be displayed in HTML

Yes, let me correct my statement. It is not true that an error will be generated if you did not have a trigger in place. You can simply include it directly in the insert statement. Under the following assumptions that a sequence had all ready been created for this table.

Method 1:

First, you must create the sequence:

create sequences emp_no_seq.

By default, it increments of 1, starting at 0.

Use its values when data is inserted in the table:

insert into the emp

(emp_id, name)

values

(emp_no_seq.nexval, "Bill Smith");

Then, copy the following code works fine and your examples are correct.

You may need to configure the triggers. Check with your Oracle DBA.

Method 2:

create sequence product_seq with increment of 1 1
/
create or replace trigger product_insert before insert to start each line
Select productseq.nextval
in: new.product_id
Double;
end;
/

Insert into the product

(product_id, product_type)

values

(productseq.nextval, "Monitor");

Using the trigger on the DML (data manipulation language) when the product
table is an insert command of the trigger fires. The trigger can give you more
rules and specificity around this action and may have so so otherwise the conditions if necessary.

RazorTrak
SR Web Applications architect.,.
Certified Macromedia ColdFusion MX Developer Advanced

Tags: ColdFusion

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