ABAP Select data from SAP table PPE_STRUCT_PACMP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPE_STRUCT_PACMP
*  INTO TABLE @DATA(IT_PPE_STRUCT_PACMP2).
*--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_PPE_STRUCT_PACMP INDEX 1 INTO DATA(WA_PPE_STRUCT_PACMP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPE_STRUCT_PACMP>-ICON = 1.
<PPE_STRUCT_PACMP>-LEVEL = 1.
<PPE_STRUCT_PACMP>-PNGUID = 1.
<PPE_STRUCT_PACMP>-PNAME = 1.
<PPE_STRUCT_PACMP>-PAGUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPE_STRUCT_PACMP-ALTNUM, sy-vline,
  WA_PPE_STRUCT_PACMP-PATEXT, sy-vline,
  WA_PPE_STRUCT_PACMP-CLINT, sy-vline,
  WA_PPE_STRUCT_PACMP-CLASS, sy-vline,
  WA_PPE_STRUCT_PACMP-KLART, sy-vline,
  WA_PPE_STRUCT_PACMP-DOCALT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPE_STRUCT_PACMP 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_PPE_STRUCT_PACMP 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_PPE_STRUCT_PACMP INTO WA_PPE_STRUCT_PACMP.


*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 ALTNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPE_STRUCT_PACMP-ALTNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPE_STRUCT_PACMP-ALTNUM.
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_PPE_STRUCT_PACMP_STR, 
ICON TYPE STRING,
LEVEL TYPE STRING,
PNGUID TYPE STRING,
PNAME TYPE STRING,
PAGUID TYPE STRING,
ALTNUM TYPE STRING,
PATEXT TYPE STRING,
CLINT TYPE STRING,
CLASS TYPE STRING,
KLART TYPE STRING,
DOCALT TYPE STRING,
OTYPE TYPE STRING,
PGUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPE_STRUCT_PACMP_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_PPE_STRUCT_PACMP_STR-ICON sy-vline 
WA_PPE_STRUCT_PACMP_STR-LEVEL sy-vline 
WA_PPE_STRUCT_PACMP_STR-PNGUID sy-vline 
WA_PPE_STRUCT_PACMP_STR-PNAME sy-vline 
WA_PPE_STRUCT_PACMP_STR-PAGUID sy-vline 
WA_PPE_STRUCT_PACMP_STR-ALTNUM sy-vline 
WA_PPE_STRUCT_PACMP_STR-PATEXT sy-vline 
WA_PPE_STRUCT_PACMP_STR-CLINT sy-vline 
WA_PPE_STRUCT_PACMP_STR-CLASS sy-vline 
WA_PPE_STRUCT_PACMP_STR-KLART sy-vline 
WA_PPE_STRUCT_PACMP_STR-DOCALT sy-vline 
WA_PPE_STRUCT_PACMP_STR-OTYPE sy-vline 
WA_PPE_STRUCT_PACMP_STR-PGUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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