DataFrame inplace change columns order

Specific Domains Data
10

if the data types of the involved columns are compatible, a schema of this type should be used

function dfswapcols(df, col1, col2)
    
    df[:,col1], df[:,col2] = df[:,col2], df[:,col1]
    rename!(df, names(df)[col1]=>names(df)[col2], names(df)[col2]=>names(df)[col1])

end