Re: [ic] Creating a Unique Primary Key

[Marcel Montes <marcel@multimake.com>]

Houman... your text is a little
confusing but here's what I think I catch:

Houman Akhavan wrote:

I am running IC 4.6, MySQL Backend.

I have created a table and a IC form that collects user input and stores it
in a MySQL table. Everytime someone fills out a form I need to create a
primary key to properly input the form data into the table. I tried the

On MySQL there's ONLY one primary
key by table and as far as I know this has to
be defined at table creation
time. (for the primary index, not other indexes).

MySQL AUTO_INCREMENT function in the mysql data structure, and also
specified it in the table.mysql file. But this was not working properly, So
I figured it would be best to create a unique key in the form, right before
inserting the row. Is there a way for me to check the previous record
primary key value and add 1 to it? I remember reading it somewhere but I
can't seem to find it.

Any ideas?

Thanks,

Houman A.

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if what you need is to add a
record on the table that autoincrements the primary key.
then it would be something
like this on sql:
mysql> CREATE TABLE tbl_mytable
(id INT PRIMARY KEY AUTO_INCREMENT, username VARCHAR(20)
NOT NULL, date DATE NOT NULL ....);

then:

mysql> INSERT INTO tbl_mytable (username, date) VALUES ("Houman Akhavan", "2000-11-29");

this way, the indexed "id" field of tbl_mytable is generated by adding to 1 to the last record's "id" field.
PD: when you modified table.mysql... did you restart the interchange daemon?

-- 
 Marcel Montes [marcel(at)multimake(dot)com] - Programmer  
Documentation is like sex: it it's good, it's good, if it's
bad, is better than nothing...
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