Question

I don;t know SQL, so I am hoping that someone can provide me the SQL to copy and paste in order to merge all of the different unit price fields into one field called “merged_unit_price”. Please note that many of the unit price values are null, so I would prefer that the null values don’t get merged.
Thank you very much in advance, Nathaniel

SELECT  p.ID AS Part_ID, 
    p.UNIT_PRICE, 
    d.UNIT_PRICE_1, 
    d.UNIT_PRICE_2, 
    d.UNIT_PRICE_3
FROM    tbl_local_SYSADM_PART AS p 
LEFT JOIN SYSADM_DISCOUNT_PRICE AS d 
ON p.ID = d.PART_ID;

Answer 1

First off in your query make sure to exclude the Null values from you dataset. Cant remember if Access SQL uses Null or Nothing, so try it one way and see if it errors out.

SELECT  p.ID AS Part_ID, p.UNIT_PRICE, d.UNIT_PRICE_1, d.UNIT_PRICE_2, d.UNIT_PRICE_3
FROM    tbl_local_SYSADM_PART AS p 
  LEFT JOIN SYSADM_DISCOUNT_PRICE AS d ON p.ID = d.PART_ID;
WHERE p.UNIT_PRICE <> Nothing OR p.UNIT_PRICE_1 <> NOTHING OR p.UNIT_PRICE_2 <> NOTHING OR p.UNIT_PRICE_3 <> Nothing

As well, i would suggest you learn more about SQL statements, in general and access, cause you have limited yourself to just 4 UNIT_PRICE‘s and will eventually have to increase your table field signature. If it were me, i would break this table into Join Table, so you can have multiple Part_ID‘s and multiple UNIT_PRICE‘s. Currently you are restricted with one Part_ID and figuratively just one UNIT_PRICE (counting the 4 price fields as 1 record).