You can refer to the following code snippet to learn about extracting sub-tables based on conditions on the data in columns of main table:
% Create a table by reading all columns from the file, patients.dat.
T = readtable('patients.dat');
T(1:5,:)
% View the data type, description, units, and other descriptive statistics
% for each variable by creating a table summary using the summary function.
summary(T) % A table with 100 rows
% Get a sub-table based on conditions on columns
T_New = T((T.Height > 67) & (T.Weight > 142.5), :);
summary(T_New) % A sub-table with 40 rows
