ABAP Select data from SAP table WISP_KEYS_SAP_M02 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WISP_KEYS_SAP_M02 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 WISP_KEYS_SAP_M02. 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 WISP_KEYS_SAP_M02 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_WISP_KEYS_SAP_M02 TYPE STANDARD TABLE OF WISP_KEYS_SAP_M02,
      WA_WISP_KEYS_SAP_M02 TYPE WISP_KEYS_SAP_M02,
      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: <WISP_KEYS_SAP_M02> TYPE WISP_KEYS_SAP_M02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WISP_KEYS_SAP_M02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WISP_KEYS_SAP_M02
  INTO TABLE IT_WISP_KEYS_SAP_M02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WISP_KEYS_SAP_M02
*  INTO TABLE @DATA(IT_WISP_KEYS_SAP_M022).
*--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_WISP_KEYS_SAP_M02 INDEX 1 INTO DATA(WA_WISP_KEYS_SAP_M022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WISP_KEYS_SAP_M02 ASSIGNING <WISP_KEYS_SAP_M02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WISP_KEYS_SAP_M02>-BOLIF = 1.
<WISP_KEYS_SAP_M02>-KNUMA = 1.
<WISP_KEYS_SAP_M02>-DATBI = 1.
<WISP_KEYS_SAP_M02>-WAERS = 1.
<WISP_KEYS_SAP_M02>-LMEIN = 1.

ENDLOOP.

LOOP AT IT_WISP_KEYS_SAP_M02 INTO WA_WISP_KEYS_SAP_M02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WISP_KEYS_SAP_M02-LNRZB, sy-vline,
  WA_WISP_KEYS_SAP_M02-MWSKZ, sy-vline,
  WA_WISP_KEYS_SAP_M02-LANDL, sy-vline,
  WA_WISP_KEYS_SAP_M02-LFTYP, sy-vline,
  WA_WISP_KEYS_SAP_M02-NPLNR, sy-vline,
  WA_WISP_KEYS_SAP_M02-SAKTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WISP_KEYS_SAP_M02 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_WISP_KEYS_SAP_M02 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_WISP_KEYS_SAP_M02 INTO WA_WISP_KEYS_SAP_M02.


*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 BOLIF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WISP_KEYS_SAP_M02-BOLIF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_KEYS_SAP_M02-BOLIF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KNUMA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WISP_KEYS_SAP_M02-KNUMA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_KEYS_SAP_M02-KNUMA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WISP_KEYS_SAP_M02-LMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_KEYS_SAP_M02-LMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LNRZB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WISP_KEYS_SAP_M02-LNRZB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_KEYS_SAP_M02-LNRZB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NPLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WISP_KEYS_SAP_M02-NPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_KEYS_SAP_M02-NPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAKTO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WISP_KEYS_SAP_M02-SAKTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_KEYS_SAP_M02-SAKTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit KOTAB, internal->external for field KOTABNR
CALL FUNCTION 'CONVERSION_EXIT_KOTAB_OUTPUT'
  EXPORTING
    input =                      WA_WISP_KEYS_SAP_M02-KOTABNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_KEYS_SAP_M02-KOTABNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VGBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WISP_KEYS_SAP_M02-VGBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_KEYS_SAP_M02-VGBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LLIEF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WISP_KEYS_SAP_M02-LLIEF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_KEYS_SAP_M02-LLIEF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WISP_KEYS_SAP_M02-LIFRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_KEYS_SAP_M02-LIFRE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WISP_KEYS_SAP_M02-INFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_KEYS_SAP_M02-INFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WISP_KEYS_SAP_M02-KUNRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_KEYS_SAP_M02-KUNRE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WISP_KEYS_SAP_M02-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_KEYS_SAP_M02-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SRVPOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WISP_KEYS_SAP_M02-SRVPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WISP_KEYS_SAP_M02-SRVPOS.
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_WISP_KEYS_SAP_M02_STR, 
BOLIF TYPE STRING,
KNUMA TYPE STRING,
DATBI TYPE STRING,
WAERS TYPE STRING,
LMEIN TYPE STRING,
LNRZB TYPE STRING,
MWSKZ TYPE STRING,
LANDL TYPE STRING,
LFTYP TYPE STRING,
NPLNR TYPE STRING,
SAKTO TYPE STRING,
KAPPL TYPE STRING,
DATUM TYPE STRING,
KOTABNR TYPE STRING,
VARKEY TYPE STRING,
KVEWE TYPE STRING,
BLTYP TYPE STRING,
LIFEX TYPE STRING,
LGTOR TYPE STRING,
TRATY TYPE STRING,
TRAID TYPE STRING,
BOLNR TYPE STRING,
MFRGR TYPE STRING,
VGBEL TYPE STRING,
KONZS TYPE STRING,
LLIEF TYPE STRING,
RESWK TYPE STRING,
LIFRE TYPE STRING,
INFNR TYPE STRING,
KUNRE TYPE STRING,
MWSK2 TYPE STRING,
EBELN TYPE STRING,
SUBMI TYPE STRING,
ESOKZ TYPE STRING,
PSTYP TYPE STRING,
EBELP TYPE STRING,
SRVPOS TYPE STRING,
LBNUM TYPE STRING,
AUSGB TYPE STRING,
STLVPOS TYPE STRING,
ASTYP TYPE STRING,
PERNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WISP_KEYS_SAP_M02_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_WISP_KEYS_SAP_M02_STR-BOLIF sy-vline 
WA_WISP_KEYS_SAP_M02_STR-KNUMA sy-vline 
WA_WISP_KEYS_SAP_M02_STR-DATBI sy-vline 
WA_WISP_KEYS_SAP_M02_STR-WAERS sy-vline 
WA_WISP_KEYS_SAP_M02_STR-LMEIN sy-vline 
WA_WISP_KEYS_SAP_M02_STR-LNRZB sy-vline 
WA_WISP_KEYS_SAP_M02_STR-MWSKZ sy-vline 
WA_WISP_KEYS_SAP_M02_STR-LANDL sy-vline 
WA_WISP_KEYS_SAP_M02_STR-LFTYP sy-vline 
WA_WISP_KEYS_SAP_M02_STR-NPLNR sy-vline 
WA_WISP_KEYS_SAP_M02_STR-SAKTO sy-vline 
WA_WISP_KEYS_SAP_M02_STR-KAPPL sy-vline 
WA_WISP_KEYS_SAP_M02_STR-DATUM sy-vline 
WA_WISP_KEYS_SAP_M02_STR-KOTABNR sy-vline 
WA_WISP_KEYS_SAP_M02_STR-VARKEY sy-vline 
WA_WISP_KEYS_SAP_M02_STR-KVEWE sy-vline 
WA_WISP_KEYS_SAP_M02_STR-BLTYP sy-vline 
WA_WISP_KEYS_SAP_M02_STR-LIFEX sy-vline 
WA_WISP_KEYS_SAP_M02_STR-LGTOR sy-vline 
WA_WISP_KEYS_SAP_M02_STR-TRATY sy-vline 
WA_WISP_KEYS_SAP_M02_STR-TRAID sy-vline 
WA_WISP_KEYS_SAP_M02_STR-BOLNR sy-vline 
WA_WISP_KEYS_SAP_M02_STR-MFRGR sy-vline 
WA_WISP_KEYS_SAP_M02_STR-VGBEL sy-vline 
WA_WISP_KEYS_SAP_M02_STR-KONZS sy-vline 
WA_WISP_KEYS_SAP_M02_STR-LLIEF sy-vline 
WA_WISP_KEYS_SAP_M02_STR-RESWK sy-vline 
WA_WISP_KEYS_SAP_M02_STR-LIFRE sy-vline 
WA_WISP_KEYS_SAP_M02_STR-INFNR sy-vline 
WA_WISP_KEYS_SAP_M02_STR-KUNRE sy-vline 
WA_WISP_KEYS_SAP_M02_STR-MWSK2 sy-vline 
WA_WISP_KEYS_SAP_M02_STR-EBELN sy-vline 
WA_WISP_KEYS_SAP_M02_STR-SUBMI sy-vline 
WA_WISP_KEYS_SAP_M02_STR-ESOKZ sy-vline 
WA_WISP_KEYS_SAP_M02_STR-PSTYP sy-vline 
WA_WISP_KEYS_SAP_M02_STR-EBELP sy-vline 
WA_WISP_KEYS_SAP_M02_STR-SRVPOS sy-vline 
WA_WISP_KEYS_SAP_M02_STR-LBNUM sy-vline 
WA_WISP_KEYS_SAP_M02_STR-AUSGB sy-vline 
WA_WISP_KEYS_SAP_M02_STR-STLVPOS sy-vline 
WA_WISP_KEYS_SAP_M02_STR-ASTYP sy-vline 
WA_WISP_KEYS_SAP_M02_STR-PERNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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