Answer / ravi kanth @ reliance sap

There is FM GUI_UPLOAD which will help you in this.
Its has got one parameter calles has_field_separator . Here you can pass comma. So that this will take care while uploading the data in Internal table.

CALL FUNCTION 'GUI_UPLOAD'
EXPORTING
filename = wf_file
filetype = 'ASC'
has_field_separator = ','
* HEADER_LENGTH = 0
* READ_BY_LINE = 'X'
* DAT_MODE = ' '
* CODEPAGE = ' '
* IGNORE_CERR = ABAP_TRUE
* REPLACEMENT = '#'
* CHECK_BOM = ' '
* IMPORTING
* FILELENGTH =
* HEADER =
TABLES
data_tab = it_data
EXCEPTIONS
file_open_error = 1
file_read_error = 2
no_batch = 3
gui_refuse_filetransfer = 4
invalid_type = 5
no_authority = 6
unknown_error = 7
bad_data_format = 8
header_not_allowed = 9
separator_not_allowed = 10
header_too_long = 11
unknown_dp_error = 12
access_denied = 13
dp_out_of_memory = 14
disk_full = 15
dp_timeout = 16
OTHERS = 17

Hope this will help you.

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