```
cid       ctypeid  tid   check   asscid      ci
19149     6        2     0      NULL         0
253440    1        1     0      22297922     1
1361285   5        2     0      NULL         1
22297922  2        1     1      NULL         NULL
49821961  5        1     0      NULL         1

```

I have to check whether `asscid` i.e `22297922` is in the cid column which is there actually.
So I have to compare when the `asscid` is in the cid and then get the value of `ci` in case of `asscid` (where `cid` is `253440`)which is 1 in this case and then assign the same value 1 of `ci` to `cid` column `22297922` which is `null` in this case.