ABAP Select data from SAP table PMEN2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PMEN2 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 PMEN2. 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 PMEN2 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_PMEN2 TYPE STANDARD TABLE OF PMEN2,
      WA_PMEN2 TYPE PMEN2,
      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: <PMEN2> TYPE PMEN2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PMEN2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PMEN2
  INTO TABLE IT_PMEN2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMEN2
*  INTO TABLE @DATA(IT_PMEN22).
*--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_PMEN2 INDEX 1 INTO DATA(WA_PMEN22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PMEN2 ASSIGNING <PMEN2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMEN2>-DATUM = 1.
<PMEN2>-BUKRS = 1.
<PMEN2>-WERKS = 1.
<PMEN2>-BTRTL = 1.
<PMEN2>-PERSG = 1.

ENDLOOP.

LOOP AT IT_PMEN2 INTO WA_PMEN2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMEN2-PERSK, sy-vline,
  WA_PMEN2-JUPER, sy-vline,
  WA_PMEN2-VDSK1, sy-vline,
  WA_PMEN2-GSBER, sy-vline,
  WA_PMEN2-ABKRS, sy-vline,
  WA_PMEN2-ANSVH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMEN2 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_PMEN2 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_PMEN2 INTO WA_PMEN2.


*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 KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PMEN2-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMEN2-KOSTL.
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_PMEN2_STR, 
DATUM TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
JUPER TYPE STRING,
VDSK1 TYPE STRING,
GSBER TYPE STRING,
ABKRS TYPE STRING,
ANSVH TYPE STRING,
KOSTL TYPE STRING,
ORGEH TYPE STRING,
PLANS TYPE STRING,
STELL TYPE STRING,
MSTBR TYPE STRING,
SACHA TYPE STRING,
SACHP TYPE STRING,
SACHZ TYPE STRING,
SBMOD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMEN2_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_PMEN2_STR-DATUM sy-vline 
WA_PMEN2_STR-BUKRS sy-vline 
WA_PMEN2_STR-WERKS sy-vline 
WA_PMEN2_STR-BTRTL sy-vline 
WA_PMEN2_STR-PERSG sy-vline 
WA_PMEN2_STR-PERSK sy-vline 
WA_PMEN2_STR-JUPER sy-vline 
WA_PMEN2_STR-VDSK1 sy-vline 
WA_PMEN2_STR-GSBER sy-vline 
WA_PMEN2_STR-ABKRS sy-vline 
WA_PMEN2_STR-ANSVH sy-vline 
WA_PMEN2_STR-KOSTL sy-vline 
WA_PMEN2_STR-ORGEH sy-vline 
WA_PMEN2_STR-PLANS sy-vline 
WA_PMEN2_STR-STELL sy-vline 
WA_PMEN2_STR-MSTBR sy-vline 
WA_PMEN2_STR-SACHA sy-vline 
WA_PMEN2_STR-SACHP sy-vline 
WA_PMEN2_STR-SACHZ sy-vline 
WA_PMEN2_STR-SBMOD sy-vline      INTO ld_text SEPARATED BY SPACE.

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