How to update a table based on values in another table?

SHDJason — Thu, 18 Aug 2016 17:03:09 GMT

I have 2 tables. I need to update some of the values in table A based on values in table B. This is part of a bigger function.

Table A has two columns. Source and Tactic.

Table B has one colum. Source

If Table A source = one of the values in Table B, then Tactic should be X else Y.

How to do this? Do I need to iterate through all the values in Table B each time? There are many thousands of rows.

Note: Tables A and B are updated independantly.

Thanks for your help.

Re: How to update a table based on values in another table?

Greg_Deckler — Thu, 18 Aug 2016 18:20:50 GMT

Take a look at my article here, it should address your issue.