SQL LIKE from another table

Question

I have two tables:

Table1 with the column customerName in string:

1,2,3,101,102,customerA,customerB.

Table 2 with the changeID in string:00001,00002,00101,customerA.

Now I want to join these two tables, because I know changeID 00001 is customer 1, changeID 00101 is customer 101 and changeID customerA is off course customerA, but due to the zeroes I tried to use LIKE but failed.

Do you guys have Idee how to join these two tables?

Answer 1

You can use an old "where join":

Select Table1.*, Table2.*
From Table1, Table2
Where Table1.ID = Val(Table2.ChangeID)

or:

Select Table1.*, Table2.*
From Table1, Table2
Where Right("0000" & Table1.ID, 5) = Table2.ChangeID

If that is too slow, write either of the tables to temporary table where the final ID and ChangeID will have matching data types.