ABAP Select data from SAP table FKK_MAD_PW1M into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FKK_MAD_PW1M 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 FKK_MAD_PW1M. 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 FKK_MAD_PW1M 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_FKK_MAD_PW1M TYPE STANDARD TABLE OF FKK_MAD_PW1M,
      WA_FKK_MAD_PW1M TYPE FKK_MAD_PW1M,
      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: <FKK_MAD_PW1M> TYPE FKK_MAD_PW1M.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FKK_MAD_PW1M.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FKK_MAD_PW1M
  INTO TABLE IT_FKK_MAD_PW1M.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_MAD_PW1M
*  INTO TABLE @DATA(IT_FKK_MAD_PW1M2).
*--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_FKK_MAD_PW1M INDEX 1 INTO DATA(WA_FKK_MAD_PW1M2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FKK_MAD_PW1M ASSIGNING <FKK_MAD_PW1M>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_MAD_PW1M>-BWVAR = 1.
<FKK_MAD_PW1M>-FIKEY = 1.
<FKK_MAD_PW1M>-LDGRP = 1.
<FKK_MAD_PW1M>-FIKEY_CANC = 1.
<FKK_MAD_PW1M>-BNEXT = 1.

ENDLOOP.

LOOP AT IT_FKK_MAD_PW1M INTO WA_FKK_MAD_PW1M.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_MAD_PW1M-BWDAT, sy-vline,
  WA_FKK_MAD_PW1M-RLDNR, sy-vline,
  WA_FKK_MAD_PW1M-BUDAT, sy-vline,
  WA_FKK_MAD_PW1M-BLDAT, sy-vline,
  WA_FKK_MAD_PW1M-STDAT, sy-vline,
  WA_FKK_MAD_PW1M-CMDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_MAD_PW1M 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_FKK_MAD_PW1M 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_FKK_MAD_PW1M INTO WA_FKK_MAD_PW1M.


*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 RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_MAD_PW1M-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_MAD_PW1M-RLDNR.
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_FKK_MAD_PW1M_STR, 
BWVAR TYPE STRING,
FIKEY TYPE STRING,
LDGRP TYPE STRING,
FIKEY_CANC TYPE STRING,
BNEXT TYPE STRING,
BWDAT TYPE STRING,
RLDNR TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
STDAT TYPE STRING,
CMDAT TYPE STRING,
OPBEL TYPE STRING,
HKONT TYPE STRING,
WAERS TYPE STRING,
NAUGLH TYPE STRING,
NOTRANSL TYPE STRING,
XCUCONV TYPE STRING,
XPOST_ONLY_1799 TYPE STRING,
R_VKONT TYPE STRING,
R_GPART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_MAD_PW1M_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_FKK_MAD_PW1M_STR-BWVAR sy-vline 
WA_FKK_MAD_PW1M_STR-FIKEY sy-vline 
WA_FKK_MAD_PW1M_STR-LDGRP sy-vline 
WA_FKK_MAD_PW1M_STR-FIKEY_CANC sy-vline 
WA_FKK_MAD_PW1M_STR-BNEXT sy-vline 
WA_FKK_MAD_PW1M_STR-BWDAT sy-vline 
WA_FKK_MAD_PW1M_STR-RLDNR sy-vline 
WA_FKK_MAD_PW1M_STR-BUDAT sy-vline 
WA_FKK_MAD_PW1M_STR-BLDAT sy-vline 
WA_FKK_MAD_PW1M_STR-STDAT sy-vline 
WA_FKK_MAD_PW1M_STR-CMDAT sy-vline 
WA_FKK_MAD_PW1M_STR-OPBEL sy-vline 
WA_FKK_MAD_PW1M_STR-HKONT sy-vline 
WA_FKK_MAD_PW1M_STR-WAERS sy-vline 
WA_FKK_MAD_PW1M_STR-NAUGLH sy-vline 
WA_FKK_MAD_PW1M_STR-NOTRANSL sy-vline 
WA_FKK_MAD_PW1M_STR-XCUCONV sy-vline 
WA_FKK_MAD_PW1M_STR-XPOST_ONLY_1799 sy-vline 
WA_FKK_MAD_PW1M_STR-R_VKONT sy-vline 
WA_FKK_MAD_PW1M_STR-R_GPART sy-vline      INTO ld_text SEPARATED BY SPACE.

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