ABAP Select data from SAP table ROIUX5_OKGP_ASCII_DOWNLOAD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ROIUX5_OKGP_ASCII_DOWNLOAD table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to ROIUX5_OKGP_ASCII_DOWNLOAD. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the ROIUX5_OKGP_ASCII_DOWNLOAD table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_ROIUX5_OKGP_ASCII_DOWNLOAD TYPE STANDARD TABLE OF ROIUX5_OKGP_ASCII_DOWNLOAD,
      WA_ROIUX5_OKGP_ASCII_DOWNLOAD TYPE ROIUX5_OKGP_ASCII_DOWNLOAD,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <ROIUX5_OKGP_ASCII_DOWNLOAD> TYPE ROIUX5_OKGP_ASCII_DOWNLOAD.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ROIUX5_OKGP_ASCII_DOWNLOAD.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ROIUX5_OKGP_ASCII_DOWNLOAD
  INTO TABLE IT_ROIUX5_OKGP_ASCII_DOWNLOAD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIUX5_OKGP_ASCII_DOWNLOAD
*  INTO TABLE @DATA(IT_ROIUX5_OKGP_ASCII_DOWNLOAD2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_ROIUX5_OKGP_ASCII_DOWNLOAD INDEX 1 INTO DATA(WA_ROIUX5_OKGP_ASCII_DOWNLOAD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ROIUX5_OKGP_ASCII_DOWNLOAD ASSIGNING <ROIUX5_OKGP_ASCII_DOWNLOAD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIUX5_OKGP_ASCII_DOWNLOAD>-RPT_COMP = 1.
<ROIUX5_OKGP_ASCII_DOWNLOAD>-SSN = 1.
<ROIUX5_OKGP_ASCII_DOWNLOAD>-TAXPAYER_TYPE = 1.
<ROIUX5_OKGP_ASCII_DOWNLOAD>-COUNTY_NAME = 1.
<ROIUX5_OKGP_ASCII_DOWNLOAD>-PROD_CODE = 1.

ENDLOOP.

LOOP AT IT_ROIUX5_OKGP_ASCII_DOWNLOAD INTO WA_ROIUX5_OKGP_ASCII_DOWNLOAD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIUX5_OKGP_ASCII_DOWNLOAD-RPT_MM, sy-vline,
  WA_ROIUX5_OKGP_ASCII_DOWNLOAD-RPT_YY, sy-vline,
  WA_ROIUX5_OKGP_ASCII_DOWNLOAD-RPT_TYPE, sy-vline,
  WA_ROIUX5_OKGP_ASCII_DOWNLOAD-CONTRACT_NO, sy-vline,
  WA_ROIUX5_OKGP_ASCII_DOWNLOAD-PRODUNIT_NO, sy-vline,
  WA_ROIUX5_OKGP_ASCII_DOWNLOAD-OP_PU_NO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIUX5_OKGP_ASCII_DOWNLOAD you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_ROIUX5_OKGP_ASCII_DOWNLOAD TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_ROIUX5_OKGP_ASCII_DOWNLOAD INTO WA_ROIUX5_OKGP_ASCII_DOWNLOAD.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ROIUX5_OKGP_ASCII_DOWNLOAD_STR, 
RPT_COMP TYPE STRING,
SSN TYPE STRING,
TAXPAYER_TYPE TYPE STRING,
COUNTY_NAME TYPE STRING,
PROD_CODE TYPE STRING,
RPT_MM TYPE STRING,
RPT_YY TYPE STRING,
RPT_TYPE TYPE STRING,
CONTRACT_NO TYPE STRING,
PRODUNIT_NO TYPE STRING,
OP_PU_NO TYPE STRING,
GROSS_VOL TYPE STRING,
GROSS_VAL TYPE STRING,
DISPOSITION TYPE STRING,
BTU TYPE STRING,
NGPA_CD TYPE STRING,
NGPA_SFX TYPE STRING,
GAS_CODE TYPE STRING,
GRAVITY TYPE STRING,
OIL_TIER_CD TYPE STRING,
OIL_CL_CD TYPE STRING,
ADD_VALUE TYPE STRING,
TAX_REIMB TYPE STRING,
EXEMPT_CD TYPE STRING,
EXEMPT_DEC TYPE STRING,
EXEMPT_VOL TYPE STRING,
EXEMPT_VAL TYPE STRING,
NET_VOL TYPE STRING,
NET_VAL TYPE STRING,
GP_TAX TYPE STRING,
PE_TAX TYPE STRING,
FILLER TYPE STRING,
TRAILER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-RPT_COMP sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-SSN sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-TAXPAYER_TYPE sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-COUNTY_NAME sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-PROD_CODE sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-RPT_MM sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-RPT_YY sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-RPT_TYPE sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-CONTRACT_NO sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-PRODUNIT_NO sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-OP_PU_NO sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-GROSS_VOL sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-GROSS_VAL sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-DISPOSITION sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-BTU sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-NGPA_CD sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-NGPA_SFX sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-GAS_CODE sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-GRAVITY sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-OIL_TIER_CD sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-OIL_CL_CD sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-ADD_VALUE sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-TAX_REIMB sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-EXEMPT_CD sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-EXEMPT_DEC sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-EXEMPT_VOL sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-EXEMPT_VAL sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-NET_VOL sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-NET_VAL sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-GP_TAX sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-PE_TAX sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-FILLER sy-vline 
WA_ROIUX5_OKGP_ASCII_DOWNLOAD_STR-TRAILER sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.