UPDATE statement with multiple WHERE conditions

Question

I\'m trying to run an UPDATE query in Access with different WHERE conditions:

UPDATE Table1
SET [Ticker] = \"TXSFI\" WHERE [Acct Numb]          


        

Answer 1

It's possible to do this with one single query (without nesting IIFs), no matter how many different WHERE clauses you have.

This is similar to what I described in my answer here (second part):

1. Create a temporary table which looks like this:

   Acct Numb      NewTicker
   -------------------------
   *03            TXSFI
   *04            TESEI
   

   You can enter as many new rows as you want, each one with a "filter value" for the account number and a new Ticker value.

2. Update all values in Table1 with this single query:

   UPDATE Table1
   INNER JOIN tmp ON Table1.[Acct Numb] LIKE tmp.[Acct Numb]
   SET Table1.Ticker = tmp.NewTicker;
   

   Yes, the JOIN part looks strange at first glance, but it's actually possible to join with LIKE.

3. You can delete the temporary table again when you're finished.