I have two dataframes:

```
id      Name     CTI
 1      abc       123
 2      vbfd      456
 3      ewrwe     789 
 4      ewr       4w4
 4      qweqw     434
 4      poitg     4311
 5      edfsdf    113
 5      wqeweqw   314

```

and

```
 id      Name     MAX
 1      abc       1323
 2      vbfd      45634
 3      ewrwe     789343
 4      ewr       4w4324
 4      qweqw     434324
 4      poitg     43112342
 5      edfsdf    113324
 5      wqeweqw   3142342

```

I want to add the CTI column to the second dataframe.
Basically I want,

```
id      Name     MAX          CTI
 1      abc       1323        123
 2      vbfd      45634       456
 3      ewrwe     789343      789 
 4      ewr       4w4324      4w4
 4      qweqw     434324      434
 4      poitg     43112342    4311
 5      edfsdf    113324      113
 5      wqeweqw   3142342     314

```

How do I go about that?