First of all, I have seen this question before : (Two tables with similar columns but different primary keys)
But there is a slight difference from my problem.
My table looks something like this :
Table 1
ID Name Salary
123 Mike 5000
129 David 4000
133 Linda 4500
Table 2
ID Dept
0123 IT
0129 Tech Support
0133 Analytics
I want to join these two tables based on ID so that I can see their ID, Name, and Dept. ID in Table 1 and Table 2 is for the same person in actuality, but there is a 0 in front of the ID in Table 2 so the program treats it as unique value giving me result something like this :
Table result:
ID Name Dept
0123 null IT
0129 null Tech Support
0133 null Analytics
123 Mike null
129 David null
133 Linda null
Is there a way that I can remove the "0" from ID in Table 2 or join them somehow? They don't have other similar columns that can be used. It was supposed to be like this :
Table result
ID Name Dept
123 Mike IT
129 David Tech Support
133 Linda Analytics
Thank you and sorry if my question is a duplicate, I can't find one similar like mine.
If the last 3 digits of the ID in Table 2 are the ID value that can be found in Table 1 then you can just take the Table 2.ID value modulo 1000 (to strip any leading digits) and JOIN on that:
SELECT t1.ID, t1.Name, t2.Dept
FROM `Table 1` t1
JOIN `Table 2` t2 ON t2.ID % 1000 = t1.ID
Output:
ID Name Dept
123 Mike IT
129 David Tech Support
133 Linda Analytics