MS Access Inner Join - Concatenation in the ON clause - sql

Question

Working code sample for SQL SERVER
Select Top 1 bc.Tier_Name, bc.Unit_ID, bc.Name, bc.Description_2
FROM bc_subs as bc INNER JOIN Product_V as v
ON v.ABC = 'ABC: ' + bc.Unit_ID
Problem code sample for Access SQL VBA
"Select Top 1 bc.Tier_Name, bc.Unit_ID, bc.Name, bc.Description_2 " & _
"FROM bc_subs as bc INNER JOIN Product_V as v" & _
"ON v.ABC = " & "ABC: " & "bc.Unit_ID "
In Access, I am trying to INNER JOIN to a table, but part of the join has to concat a string to the front of the value. Table V's key is ABC:123, but the key in BC is just 123 -- so I have to add the ABC: to the font of the 123 to make both sides equal to ABC:123.
I have tried several variations on the VBA Access SQL string but cannot seem to get the join to work correctly.
Any advice? The code was truncated and edited out, variables and alias names changed for safety type reasons. It is the logic I am after within the VBA code and the assignment of a string to a value like this.

Answer 1

You miss a space and some quoting:
"bc.Tier_Name, bc.Unit_ID, bc.Name, bc.Description_2 " & _
"FROM bc_subs as bc INNER JOIN Product_V as v " & _
"ON v.ABC = 'ABC:' + bc.Unit_ID"

Answer 2

The quotes you're using to concatenate, break your string. You can use double quotes to escape them, and get what's functionally equivalent to your SQL server query.
Also, queries using a join with a constant in the on clause in Access should have the on clause surrounded by parentheses to avoid errors in some conditions. I recommend always using them, to be safe.
"Select bc.Tier_Name, bc.Unit_ID, bc.Name, bc.Description_2 " & _
"FROM bc_subs as bc INNER JOIN Product_V as v " & _
"ON (v.ABC = ""ABC: "" & bc.Unit_ID) "
Alternatively, you can write this as a CROSS JOIN:
"Select bc.Tier_Name, bc.Unit_ID, bc.Name, bc.Description_2 " & _
"FROM bc_subs as bc, Product_V as v " & _
"WHERE (v.ABC = ""ABC: "" & bc.Unit_ID) "