ABAP Select data from SAP table P0124 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P0124 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 P0124. 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 P0124 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_P0124 TYPE STANDARD TABLE OF P0124,
      WA_P0124 TYPE P0124,
      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: <P0124> TYPE P0124.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P0124.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P0124
  INTO TABLE IT_P0124.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P0124
*  INTO TABLE @DATA(IT_P01242).
*--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_P0124 INDEX 1 INTO DATA(WA_P01242).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P0124 ASSIGNING <P0124>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P0124>-PERNR = 1.
<P0124>-INFTY = 1.
<P0124>-SUBTY = 1.
<P0124>-OBJPS = 1.
<P0124>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_P0124 INTO WA_P0124.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P0124-ENDDA, sy-vline,
  WA_P0124-BEGDA, sy-vline,
  WA_P0124-SEQNR, sy-vline,
  WA_P0124-AEDTM, sy-vline,
  WA_P0124-UNAME, sy-vline,
  WA_P0124-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P0124 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_P0124 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_P0124 INTO WA_P0124.


*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.
ENDFORM. 

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

TYPES: BEGIN OF T_P0124_STR, 
PERNR TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
SPRPS TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
HISTO TYPE STRING,
ITXEX TYPE STRING,
REFEX TYPE STRING,
ORDEX TYPE STRING,
ITBLD TYPE STRING,
PREAS TYPE STRING,
FLAG1 TYPE STRING,
FLAG2 TYPE STRING,
FLAG3 TYPE STRING,
FLAG4 TYPE STRING,
RESE1 TYPE STRING,
RESE2 TYPE STRING,
GRPVL TYPE STRING,
WGSCH TYPE STRING,
KVBTR TYPE STRING,
RVBTR TYPE STRING,
AVBTR TYPE STRING,
PVBTR TYPE STRING,
KVWAJ TYPE STRING,
RVWAJ TYPE STRING,
AVWAJ TYPE STRING,
PVWAJ TYPE STRING,
KVWVJ TYPE STRING,
RVWVJ TYPE STRING,
AVWVJ TYPE STRING,
PVWVJ TYPE STRING,
KVKNZ TYPE STRING,
RVKNZ TYPE STRING,
AVKNZ TYPE STRING,
PVKNZ TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
DATUM TYPE STRING,
MASCH TYPE STRING,
STBTR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P0124_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_P0124_STR-PERNR sy-vline 
WA_P0124_STR-INFTY sy-vline 
WA_P0124_STR-SUBTY sy-vline 
WA_P0124_STR-OBJPS sy-vline 
WA_P0124_STR-SPRPS sy-vline 
WA_P0124_STR-ENDDA sy-vline 
WA_P0124_STR-BEGDA sy-vline 
WA_P0124_STR-SEQNR sy-vline 
WA_P0124_STR-AEDTM sy-vline 
WA_P0124_STR-UNAME sy-vline 
WA_P0124_STR-HISTO sy-vline 
WA_P0124_STR-ITXEX sy-vline 
WA_P0124_STR-REFEX sy-vline 
WA_P0124_STR-ORDEX sy-vline 
WA_P0124_STR-ITBLD sy-vline 
WA_P0124_STR-PREAS sy-vline 
WA_P0124_STR-FLAG1 sy-vline 
WA_P0124_STR-FLAG2 sy-vline 
WA_P0124_STR-FLAG3 sy-vline 
WA_P0124_STR-FLAG4 sy-vline 
WA_P0124_STR-RESE1 sy-vline 
WA_P0124_STR-RESE2 sy-vline 
WA_P0124_STR-GRPVL sy-vline 
WA_P0124_STR-WGSCH sy-vline 
WA_P0124_STR-KVBTR sy-vline 
WA_P0124_STR-RVBTR sy-vline 
WA_P0124_STR-AVBTR sy-vline 
WA_P0124_STR-PVBTR sy-vline 
WA_P0124_STR-KVWAJ sy-vline 
WA_P0124_STR-RVWAJ sy-vline 
WA_P0124_STR-AVWAJ sy-vline 
WA_P0124_STR-PVWAJ sy-vline 
WA_P0124_STR-KVWVJ sy-vline 
WA_P0124_STR-RVWVJ sy-vline 
WA_P0124_STR-AVWVJ sy-vline 
WA_P0124_STR-PVWVJ sy-vline 
WA_P0124_STR-KVKNZ sy-vline 
WA_P0124_STR-RVKNZ sy-vline 
WA_P0124_STR-AVKNZ sy-vline 
WA_P0124_STR-PVKNZ sy-vline 
WA_P0124_STR-WERKS sy-vline 
WA_P0124_STR-BTRTL sy-vline 
WA_P0124_STR-DATUM sy-vline 
WA_P0124_STR-MASCH sy-vline 
WA_P0124_STR-STBTR sy-vline      INTO ld_text SEPARATED BY SPACE.

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