ABAP Select data from SAP table DFKKORDER_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKORDER_S
*  INTO TABLE @DATA(IT_DFKKORDER_S2).
*--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_DFKKORDER_S INDEX 1 INTO DATA(WA_DFKKORDER_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKORDER_S>-MANDT = 1.
<DFKKORDER_S>-ORDNR = 1.
<DFKKORDER_S>-ORDCLS = 1.
<DFKKORDER_S>-ORDTYP = 1.
<DFKKORDER_S>-FIKEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKORDER_S-APPLK, sy-vline,
  WA_DFKKORDER_S-DOC_DATE, sy-vline,
  WA_DFKKORDER_S-OPBEL, sy-vline,
  WA_DFKKORDER_S-POST_DATE, sy-vline,
  WA_DFKKORDER_S-BLART, sy-vline,
  WA_DFKKORDER_S-APPROVED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKORDER_S 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_DFKKORDER_S 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_DFKKORDER_S INTO WA_DFKKORDER_S.


*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 ALPHA, internal->external for field ORDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKORDER_S-ORDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKORDER_S-ORDNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field FILENUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKORDER_S-FILENUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKORDER_S-FILENUMBER.
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_DFKKORDER_S_STR, 
MANDT TYPE STRING,
ORDNR TYPE STRING,
ORDCLS TYPE STRING,
ORDTYP TYPE STRING,
FIKEY TYPE STRING,
APPLK TYPE STRING,
DOC_DATE TYPE STRING,
OPBEL TYPE STRING,
POST_DATE TYPE STRING,
BLART TYPE STRING,
APPROVED TYPE STRING,
CURRENCY TYPE STRING,
TRANS_DATE TYPE STRING,
REVID TYPE STRING,
REVERSEDNR TYPE STRING,
REVERSALNR TYPE STRING,
ERNAM TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
REFDOCNR TYPE STRING,
AWTYP TYPE STRING,
AWKEY TYPE STRING,
AWSYS TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
HEADERTXT TYPE STRING,
FILENUMBER TYPE STRING,
VATDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKORDER_S_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_DFKKORDER_S_STR-MANDT sy-vline 
WA_DFKKORDER_S_STR-ORDNR sy-vline 
WA_DFKKORDER_S_STR-ORDCLS sy-vline 
WA_DFKKORDER_S_STR-ORDTYP sy-vline 
WA_DFKKORDER_S_STR-FIKEY sy-vline 
WA_DFKKORDER_S_STR-APPLK sy-vline 
WA_DFKKORDER_S_STR-DOC_DATE sy-vline 
WA_DFKKORDER_S_STR-OPBEL sy-vline 
WA_DFKKORDER_S_STR-POST_DATE sy-vline 
WA_DFKKORDER_S_STR-BLART sy-vline 
WA_DFKKORDER_S_STR-APPROVED sy-vline 
WA_DFKKORDER_S_STR-CURRENCY sy-vline 
WA_DFKKORDER_S_STR-TRANS_DATE sy-vline 
WA_DFKKORDER_S_STR-REVID sy-vline 
WA_DFKKORDER_S_STR-REVERSEDNR sy-vline 
WA_DFKKORDER_S_STR-REVERSALNR sy-vline 
WA_DFKKORDER_S_STR-ERNAM sy-vline 
WA_DFKKORDER_S_STR-CPUDT sy-vline 
WA_DFKKORDER_S_STR-CPUTM sy-vline 
WA_DFKKORDER_S_STR-REFDOCNR sy-vline 
WA_DFKKORDER_S_STR-AWTYP sy-vline 
WA_DFKKORDER_S_STR-AWKEY sy-vline 
WA_DFKKORDER_S_STR-AWSYS sy-vline 
WA_DFKKORDER_S_STR-AENAM sy-vline 
WA_DFKKORDER_S_STR-AEDAT sy-vline 
WA_DFKKORDER_S_STR-AETIM sy-vline 
WA_DFKKORDER_S_STR-HEADERTXT sy-vline 
WA_DFKKORDER_S_STR-FILENUMBER sy-vline 
WA_DFKKORDER_S_STR-VATDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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