Finding matching strings from a table and making a new table

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I have a huge table of size 18792010x57 (57) are the number of columns.
As an example say the table (T) that looks like:
'A' 'B' 'C' 'D'......'BC'
'AFG' 'NCD' 22 1..... 2
'CAN' 'NCD' 36 7......4
'AFG' 'HER' 21 3......3
'BER' 'NCD' 32 1......5
'CAN' 'HER' 31 1......3
I want to make a separtate table (T_1) just for AFG like:
'A' 'B' 'C' 'D'......'BC'
'AFG' 'NCD' 22 1..... 2
'AFG' 'HER' 21 3......3
I am using readtable function to read the table and the used the below line but it returns an error --> 'Undefined operator '==' for input arguments of type 'cell'
T_1 = T(T.A == 'AFG')
  1 Comment
Stephen23 on 18 Feb 2020
This is not a good sign:
Putting numbers into variable names indicates that you are doing something wrong.
Splitting up into multiple tables is unlikely to be required, it is usually easier to process the data in one table:

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Accepted Answer

Bhaskar R
Bhaskar R on 18 Feb 2020
T_1 = T(strcmp(T.A, 'AFG'), :);

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