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Add double quotes to the StringType columns

New Contributor

Hi All,

I am trying to add double quotes around the column type that are of string type in spark dataframe, how can I do that


for eg


Initial DF

col1    |   col2    | col3

1        |    abc     | px01


After adding the quotes to the alphanumeric data ie to the string type columns the final dataframe should be


col1    |   col2       |  col3

1        |    "abc"     | "px01"


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