inserts within function, within insert - Mailing list pgsql-sql

From Kevin Duffy
Subject inserts within function, within insert
Date
Msg-id DFC309C8A42633419600522FA8C4AE1A5610B7@mail-01.wrcapital.corp
Whole thread Raw
List pgsql-sql

Hello All:

 

I am hoping to get some guidance from the local gurus, before I go off and

write this code.

 

Consider this scenario:

 

I receive a file containing inventory info, make it simple, clothes items.

Within the file there is info for different locations, so an inventory item

can occur more than once. I.e. a certain jacket could be in the

inventory at more than one location.  It is also possible

that an inventory item in the file could be a new item,

an item that is not in my item table.

 

When I parse and import the table there will be enough info provided,

so that I can create the new inventory items.

 

I would like to write a function that based upon the info provided for an inventory item will

either return the item’s key or if the item is new, create the item and then return the item’s key.

 

Say I am doing a simple insert to inventory like the following:

 

INSERT INTO INVENTORY ( itemkey, locationkey, qty)

    SELECT   getitemkey(itemtype, style, color, size),  lockey,  qty    from IMPORT_INV

 

 

 

Question:

   New records added to the ITEM table within getitemkey(),  will they be available to inserts that follow?

   I.e.  if record 2 in IMPORT_INV is for the same clothing item as record 27, and this a new inventory item,

          but for different locations.  Will this new inventory item get added twice to my ITEM table.

 

 

 

Many thanks for considering this issue.

 

 

 

Kevin Duffy

 

pgsql-sql by date:

Previous
From: Tom Lane
Date:
Subject: Re: Using UTF strings in pg8.3 - storing hexadecimal values in bytea columns
Next
From: "Johnson, Michael L."
Date:
Subject: Re: Subsorting GROUP BY data