ABAP Select data from SAP table FC06_S_TF600_691_NKEY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FC06_S_TF600_691_NKEY 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 FC06_S_TF600_691_NKEY. 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 FC06_S_TF600_691_NKEY 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_FC06_S_TF600_691_NKEY TYPE STANDARD TABLE OF FC06_S_TF600_691_NKEY,
      WA_FC06_S_TF600_691_NKEY TYPE FC06_S_TF600_691_NKEY,
      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: <FC06_S_TF600_691_NKEY> TYPE FC06_S_TF600_691_NKEY.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FC06_S_TF600_691_NKEY.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FC06_S_TF600_691_NKEY
  INTO TABLE IT_FC06_S_TF600_691_NKEY.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FC06_S_TF600_691_NKEY
*  INTO TABLE @DATA(IT_FC06_S_TF600_691_NKEY2).
*--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_FC06_S_TF600_691_NKEY INDEX 1 INTO DATA(WA_FC06_S_TF600_691_NKEY2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FC06_S_TF600_691_NKEY ASSIGNING <FC06_S_TF600_691_NKEY>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FC06_S_TF600_691_NKEY>-NINVFLG = 1.
<FC06_S_TF600_691_NKEY>-NMINFLG = 1.
<FC06_S_TF600_691_NKEY>-HRREV = 1.
<FC06_S_TF600_691_NKEY>-HRSHA = 1.
<FC06_S_TF600_691_NKEY>-HRSITYP = 1.

ENDLOOP.

LOOP AT IT_FC06_S_TF600_691_NKEY INTO WA_FC06_S_TF600_691_NKEY.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FC06_S_TF600_691_NKEY-HRAQDSI, sy-vline,
  WA_FC06_S_TF600_691_NKEY-HRDPCSI, sy-vline,
  WA_FC06_S_TF600_691_NKEY-HRDPDSI, sy-vline,
  WA_FC06_S_TF600_691_NKEY-NHSITYP, sy-vline,
  WA_FC06_S_TF600_691_NKEY-NHAQCSI, sy-vline,
  WA_FC06_S_TF600_691_NKEY-NHDPDSI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FC06_S_TF600_691_NKEY 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_FC06_S_TF600_691_NKEY 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_FC06_S_TF600_691_NKEY INTO WA_FC06_S_TF600_691_NKEY.


*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 AC172, internal->external for field GWALVAL
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_FC06_S_TF600_691_NKEY-GWALVAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC06_S_TF600_691_NKEY-GWALVAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field GWRLVAL
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_FC06_S_TF600_691_NKEY-GWRLVAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC06_S_TF600_691_NKEY-GWRLVAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field NGALVAL
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_FC06_S_TF600_691_NKEY-NGALVAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC06_S_TF600_691_NKEY-NGALVAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field NGRLVAL
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_FC06_S_TF600_691_NKEY-NGRLVAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC06_S_TF600_691_NKEY-NGRLVAL.
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_FC06_S_TF600_691_NKEY_STR, 
NINVFLG TYPE STRING,
NMINFLG TYPE STRING,
HRREV TYPE STRING,
HRSHA TYPE STRING,
HRSITYP TYPE STRING,
HRAQDSI TYPE STRING,
HRDPCSI TYPE STRING,
HRDPDSI TYPE STRING,
NHSITYP TYPE STRING,
NHAQCSI TYPE STRING,
NHDPDSI TYPE STRING,
NHDPCSI TYPE STRING,
GWAYR TYPE STRING,
GWAPE TYPE STRING,
GWABG TYPE STRING,
GWARFLG TYPE STRING,
GWALFLG TYPE STRING,
GWALVAL TYPE STRING,
GWALCUR TYPE STRING,
GWAMETH TYPE STRING,
GWRYR TYPE STRING,
GWRPE TYPE STRING,
GWRBG TYPE STRING,
GWRRFLG TYPE STRING,
GWRLFLG TYPE STRING,
GWRLVAL TYPE STRING,
GWRLCUR TYPE STRING,
GWRMETH TYPE STRING,
NGAYR TYPE STRING,
NGAPE TYPE STRING,
NGABG TYPE STRING,
NGARFLG TYPE STRING,
NGALFLG TYPE STRING,
NGALVAL TYPE STRING,
NGALCUR TYPE STRING,
NGAMETH TYPE STRING,
NGRYR TYPE STRING,
NGRPE TYPE STRING,
NGRBG TYPE STRING,
NGRRFLG TYPE STRING,
NGRLFLG TYPE STRING,
NGRLVAL TYPE STRING,
NGRLCUR TYPE STRING,
NGRMETH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FC06_S_TF600_691_NKEY_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_FC06_S_TF600_691_NKEY_STR-NINVFLG sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NMINFLG sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-HRREV sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-HRSHA sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-HRSITYP sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-HRAQDSI sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-HRDPCSI sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-HRDPDSI sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NHSITYP sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NHAQCSI sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NHDPDSI sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NHDPCSI sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-GWAYR sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-GWAPE sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-GWABG sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-GWARFLG sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-GWALFLG sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-GWALVAL sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-GWALCUR sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-GWAMETH sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-GWRYR sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-GWRPE sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-GWRBG sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-GWRRFLG sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-GWRLFLG sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-GWRLVAL sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-GWRLCUR sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-GWRMETH sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NGAYR sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NGAPE sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NGABG sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NGARFLG sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NGALFLG sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NGALVAL sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NGALCUR sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NGAMETH sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NGRYR sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NGRPE sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NGRBG sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NGRRFLG sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NGRLFLG sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NGRLVAL sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NGRLCUR sy-vline 
WA_FC06_S_TF600_691_NKEY_STR-NGRMETH sy-vline      INTO ld_text SEPARATED BY SPACE.

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