ABAP Select data from SAP table PMEF4 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PMEF4 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 PMEF4. 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 PMEF4 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_PMEF4 TYPE STANDARD TABLE OF PMEF4,
      WA_PMEF4 TYPE PMEF4,
      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: <PMEF4> TYPE PMEF4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PMEF4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PMEF4
  INTO TABLE IT_PMEF4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMEF4
*  INTO TABLE @DATA(IT_PMEF42).
*--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_PMEF4 INDEX 1 INTO DATA(WA_PMEF42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PMEF4 ASSIGNING <PMEF4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMEF4>-BUKRS = 1.
<PMEF4>-WERKS = 1.
<PMEF4>-BTRTL = 1.
<PMEF4>-PERSG = 1.
<PMEF4>-PERSK = 1.

ENDLOOP.

LOOP AT IT_PMEF4 INTO WA_PMEF4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMEF4-ANSVH, sy-vline,
  WA_PMEF4-TRFAR, sy-vline,
  WA_PMEF4-TRFGB, sy-vline,
  WA_PMEF4-TRFGR, sy-vline,
  WA_PMEF4-TRFST, sy-vline,
  WA_PMEF4-CTTYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMEF4 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_PMEF4 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_PMEF4 INTO WA_PMEF4.


*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_PMEF4_STR, 
BUKRS TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
ANSVH TYPE STRING,
TRFAR TYPE STRING,
TRFGB TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
CTTYP TYPE STRING,
ORGAN TYPE STRING,
COTIS TYPE STRING,
PERNR TYPE STRING,
CTMOD TYPE STRING,
BTRTG TYPE STRING,
WERKG TYPE STRING,
SCHKZ TYPE STRING,
MSTBR TYPE STRING,
KZTIM TYPE STRING,
COUMQ TYPE STRING,
PCS TYPE STRING,
REGRT TYPE STRING,
REGNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMEF4_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_PMEF4_STR-BUKRS sy-vline 
WA_PMEF4_STR-WERKS sy-vline 
WA_PMEF4_STR-BTRTL sy-vline 
WA_PMEF4_STR-PERSG sy-vline 
WA_PMEF4_STR-PERSK sy-vline 
WA_PMEF4_STR-ANSVH sy-vline 
WA_PMEF4_STR-TRFAR sy-vline 
WA_PMEF4_STR-TRFGB sy-vline 
WA_PMEF4_STR-TRFGR sy-vline 
WA_PMEF4_STR-TRFST sy-vline 
WA_PMEF4_STR-CTTYP sy-vline 
WA_PMEF4_STR-ORGAN sy-vline 
WA_PMEF4_STR-COTIS sy-vline 
WA_PMEF4_STR-PERNR sy-vline 
WA_PMEF4_STR-CTMOD sy-vline 
WA_PMEF4_STR-BTRTG sy-vline 
WA_PMEF4_STR-WERKG sy-vline 
WA_PMEF4_STR-SCHKZ sy-vline 
WA_PMEF4_STR-MSTBR sy-vline 
WA_PMEF4_STR-KZTIM sy-vline 
WA_PMEF4_STR-COUMQ sy-vline 
WA_PMEF4_STR-PCS sy-vline 
WA_PMEF4_STR-REGRT sy-vline 
WA_PMEF4_STR-REGNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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