ABAP Select data from SAP table PME13 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PME13 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 PME13. 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 PME13 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_PME13 TYPE STANDARD TABLE OF PME13,
      WA_PME13 TYPE PME13,
      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: <PME13> TYPE PME13.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PME13.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PME13
  INTO TABLE IT_PME13.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PME13
*  INTO TABLE @DATA(IT_PME132).
*--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_PME13 INDEX 1 INTO DATA(WA_PME132).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PME13 ASSIGNING <PME13>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PME13>-AKSTA = 1.
<PME13>-ANSTA = 1.
<PME13>-AUSTA = 1.
<PME13>-PATTR = 1.
<PME13>-ATT20 = 1.

ENDLOOP.

LOOP AT IT_PME13 INTO WA_PME13.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PME13-ATT21, sy-vline,
  WA_PME13-ATT22, sy-vline,
  WA_PME13-ATT23, sy-vline,
  WA_PME13-ATT24, sy-vline,
  WA_PME13-ATT25, sy-vline,
  WA_PME13-ATT26, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PME13 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_PME13 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_PME13 INTO WA_PME13.


*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_PME13_STR, 
AKSTA TYPE STRING,
ANSTA TYPE STRING,
AUSTA TYPE STRING,
PATTR TYPE STRING,
ATT20 TYPE STRING,
ATT21 TYPE STRING,
ATT22 TYPE STRING,
ATT23 TYPE STRING,
ATT24 TYPE STRING,
ATT25 TYPE STRING,
ATT26 TYPE STRING,
ATT27 TYPE STRING,
ATT28 TYPE STRING,
ATT29 TYPE STRING,
ATT30 TYPE STRING,
ATT31 TYPE STRING,
ATT32 TYPE STRING,
ATT33 TYPE STRING,
ATT34 TYPE STRING,
ATT35 TYPE STRING,
ATT36 TYPE STRING,
ATT37 TYPE STRING,
ATT38 TYPE STRING,
ATT39 TYPE STRING,
KVKZ1 TYPE STRING,
RVKZ1 TYPE STRING,
AVKZ1 TYPE STRING,
MITKA TYPE STRING,
ZUSKA TYPE STRING,
BKLAS TYPE STRING,
BETRG TYPE STRING,
SELKV TYPE STRING,
SELRV TYPE STRING,
KVBFG TYPE STRING,
RVBFG TYPE STRING,
AVBFG TYPE STRING,
MAXKV TYPE STRING,
MITNR TYPE STRING,
PVKZ1 TYPE STRING,
PVBKL TYPE STRING,
PVFBT TYPE STRING,
SELPV TYPE STRING,
PVBFG TYPE STRING,
MAXPV TYPE STRING,
ALTJJ TYPE STRING,
KVSCH TYPE STRING,
KVGST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PME13_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_PME13_STR-AKSTA sy-vline 
WA_PME13_STR-ANSTA sy-vline 
WA_PME13_STR-AUSTA sy-vline 
WA_PME13_STR-PATTR sy-vline 
WA_PME13_STR-ATT20 sy-vline 
WA_PME13_STR-ATT21 sy-vline 
WA_PME13_STR-ATT22 sy-vline 
WA_PME13_STR-ATT23 sy-vline 
WA_PME13_STR-ATT24 sy-vline 
WA_PME13_STR-ATT25 sy-vline 
WA_PME13_STR-ATT26 sy-vline 
WA_PME13_STR-ATT27 sy-vline 
WA_PME13_STR-ATT28 sy-vline 
WA_PME13_STR-ATT29 sy-vline 
WA_PME13_STR-ATT30 sy-vline 
WA_PME13_STR-ATT31 sy-vline 
WA_PME13_STR-ATT32 sy-vline 
WA_PME13_STR-ATT33 sy-vline 
WA_PME13_STR-ATT34 sy-vline 
WA_PME13_STR-ATT35 sy-vline 
WA_PME13_STR-ATT36 sy-vline 
WA_PME13_STR-ATT37 sy-vline 
WA_PME13_STR-ATT38 sy-vline 
WA_PME13_STR-ATT39 sy-vline 
WA_PME13_STR-KVKZ1 sy-vline 
WA_PME13_STR-RVKZ1 sy-vline 
WA_PME13_STR-AVKZ1 sy-vline 
WA_PME13_STR-MITKA sy-vline 
WA_PME13_STR-ZUSKA sy-vline 
WA_PME13_STR-BKLAS sy-vline 
WA_PME13_STR-BETRG sy-vline 
WA_PME13_STR-SELKV sy-vline 
WA_PME13_STR-SELRV sy-vline 
WA_PME13_STR-KVBFG sy-vline 
WA_PME13_STR-RVBFG sy-vline 
WA_PME13_STR-AVBFG sy-vline 
WA_PME13_STR-MAXKV sy-vline 
WA_PME13_STR-MITNR sy-vline 
WA_PME13_STR-PVKZ1 sy-vline 
WA_PME13_STR-PVBKL sy-vline 
WA_PME13_STR-PVFBT sy-vline 
WA_PME13_STR-SELPV sy-vline 
WA_PME13_STR-PVBFG sy-vline 
WA_PME13_STR-MAXPV sy-vline 
WA_PME13_STR-ALTJJ sy-vline 
WA_PME13_STR-KVSCH sy-vline 
WA_PME13_STR-KVGST sy-vline      INTO ld_text SEPARATED BY SPACE.

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