ABAP Select data from SAP table /TDAG/CPC_EXFO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /TDAG/CPC_EXFO 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 /TDAG/CPC_EXFO. 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 /TDAG/CPC_EXFO 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_/TDAG/CPC_EXFO TYPE STANDARD TABLE OF /TDAG/CPC_EXFO,
      WA_/TDAG/CPC_EXFO TYPE /TDAG/CPC_EXFO,
      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: </TDAG/CPC_EXFO> TYPE /TDAG/CPC_EXFO.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /TDAG/CPC_EXFO
  INTO TABLE IT_/TDAG/CPC_EXFO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /TDAG/CPC_EXFO
*  INTO TABLE @DATA(IT_/TDAG/CPC_EXFO2).
*--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_/TDAG/CPC_EXFO INDEX 1 INTO DATA(WA_/TDAG/CPC_EXFO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/TDAG/CPC_EXFO ASSIGNING </TDAG/CPC_EXFO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</TDAG/CPC_EXFO>-MANDT = 1.
</TDAG/CPC_EXFO>-EXPTYP = 1.
</TDAG/CPC_EXFO>-SBGVID = 1.
</TDAG/CPC_EXFO>-DOKAR = 1.
</TDAG/CPC_EXFO>-DOKNR = 1.

ENDLOOP.

LOOP AT IT_/TDAG/CPC_EXFO INTO WA_/TDAG/CPC_EXFO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/TDAG/CPC_EXFO-DOKVR, sy-vline,
  WA_/TDAG/CPC_EXFO-DOKTL, sy-vline,
  WA_/TDAG/CPC_EXFO-DDOKAR, sy-vline,
  WA_/TDAG/CPC_EXFO-WWIAPPL, sy-vline,
  WA_/TDAG/CPC_EXFO-FILEEXT, sy-vline,
  WA_/TDAG/CPC_EXFO-DVSSAVE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/TDAG/CPC_EXFO 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_/TDAG/CPC_EXFO 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_/TDAG/CPC_EXFO INTO WA_/TDAG/CPC_EXFO.


*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.

*Conversion exit CHRID, internal->external for field SBGVID
CALL FUNCTION 'CONVERSION_EXIT_CHRID_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/CPC_EXFO-SBGVID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/CPC_EXFO-SBGVID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/TDAG/CPC_EXFO-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/TDAG/CPC_EXFO-DOKNR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_/TDAG/CPC_EXFO_STR, 
MANDT TYPE STRING,
EXPTYP TYPE STRING,
SBGVID TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
DDOKAR TYPE STRING,
WWIAPPL TYPE STRING,
FILEEXT TYPE STRING,
DVSSAVE TYPE STRING,
FINAL_REP_FUNC TYPE STRING,
PARAM_DET_FUNC TYPE STRING,
VIEWER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/TDAG/CPC_EXFO_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_/TDAG/CPC_EXFO_STR-MANDT sy-vline 
WA_/TDAG/CPC_EXFO_STR-EXPTYP sy-vline 
WA_/TDAG/CPC_EXFO_STR-SBGVID sy-vline 
WA_/TDAG/CPC_EXFO_STR-DOKAR sy-vline 
WA_/TDAG/CPC_EXFO_STR-DOKNR sy-vline 
WA_/TDAG/CPC_EXFO_STR-DOKVR sy-vline 
WA_/TDAG/CPC_EXFO_STR-DOKTL sy-vline 
WA_/TDAG/CPC_EXFO_STR-DDOKAR sy-vline 
WA_/TDAG/CPC_EXFO_STR-WWIAPPL sy-vline 
WA_/TDAG/CPC_EXFO_STR-FILEEXT sy-vline 
WA_/TDAG/CPC_EXFO_STR-DVSSAVE sy-vline 
WA_/TDAG/CPC_EXFO_STR-FINAL_REP_FUNC sy-vline 
WA_/TDAG/CPC_EXFO_STR-PARAM_DET_FUNC sy-vline 
WA_/TDAG/CPC_EXFO_STR-VIEWER sy-vline      INTO ld_text SEPARATED BY SPACE.

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