ABAP Select data from SAP table P02F_EMZ_SELECTION into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P02F_EMZ_SELECTION 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 P02F_EMZ_SELECTION. 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 P02F_EMZ_SELECTION 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_P02F_EMZ_SELECTION TYPE STANDARD TABLE OF P02F_EMZ_SELECTION,
      WA_P02F_EMZ_SELECTION TYPE P02F_EMZ_SELECTION,
      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: <P02F_EMZ_SELECTION> TYPE P02F_EMZ_SELECTION.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P02F_EMZ_SELECTION.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P02F_EMZ_SELECTION
  INTO TABLE IT_P02F_EMZ_SELECTION.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P02F_EMZ_SELECTION
*  INTO TABLE @DATA(IT_P02F_EMZ_SELECTION2).
*--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_P02F_EMZ_SELECTION INDEX 1 INTO DATA(WA_P02F_EMZ_SELECTION2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P02F_EMZ_SELECTION ASSIGNING <P02F_EMZ_SELECTION>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P02F_EMZ_SELECTION>-MOLGA = 1.
<P02F_EMZ_SELECTION>-APPLI = 1.
<P02F_EMZ_SELECTION>-PPLAN = 1.
<P02F_EMZ_SELECTION>-SPRSL = 1.
<P02F_EMZ_SELECTION>-EMZPROP = 1.

ENDLOOP.

LOOP AT IT_P02F_EMZ_SELECTION INTO WA_P02F_EMZ_SELECTION.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P02F_EMZ_SELECTION-DTAPROP, sy-vline,
  WA_P02F_EMZ_SELECTION-EMZVALTY, sy-vline,
  WA_P02F_EMZ_SELECTION-DTAVALTY, sy-vline,
  WA_P02F_EMZ_SELECTION-QSTVALTY, sy-vline,
  WA_P02F_EMZ_SELECTION-VTLTXT, sy-vline,
  WA_P02F_EMZ_SELECTION-KASSE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P02F_EMZ_SELECTION 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_P02F_EMZ_SELECTION 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_P02F_EMZ_SELECTION INTO WA_P02F_EMZ_SELECTION.


*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 ISOLA, internal->external for field SPRSL
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_P02F_EMZ_SELECTION-SPRSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P02F_EMZ_SELECTION-SPRSL.
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_P02F_EMZ_SELECTION_STR, 
MOLGA TYPE STRING,
APPLI TYPE STRING,
PPLAN TYPE STRING,
SPRSL TYPE STRING,
EMZPROP TYPE STRING,
DTAPROP TYPE STRING,
EMZVALTY TYPE STRING,
DTAVALTY TYPE STRING,
QSTVALTY TYPE STRING,
VTLTXT TYPE STRING,
KASSE TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P02F_EMZ_SELECTION_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_P02F_EMZ_SELECTION_STR-MOLGA sy-vline 
WA_P02F_EMZ_SELECTION_STR-APPLI sy-vline 
WA_P02F_EMZ_SELECTION_STR-PPLAN sy-vline 
WA_P02F_EMZ_SELECTION_STR-SPRSL sy-vline 
WA_P02F_EMZ_SELECTION_STR-EMZPROP sy-vline 
WA_P02F_EMZ_SELECTION_STR-DTAPROP sy-vline 
WA_P02F_EMZ_SELECTION_STR-EMZVALTY sy-vline 
WA_P02F_EMZ_SELECTION_STR-DTAVALTY sy-vline 
WA_P02F_EMZ_SELECTION_STR-QSTVALTY sy-vline 
WA_P02F_EMZ_SELECTION_STR-VTLTXT sy-vline 
WA_P02F_EMZ_SELECTION_STR-KASSE sy-vline 
WA_P02F_EMZ_SELECTION_STR-BEGDA sy-vline 
WA_P02F_EMZ_SELECTION_STR-ENDDA sy-vline      INTO ld_text SEPARATED BY SPACE.

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