ABAP Select data from SAP table PPE51_4020 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PPE51_4020 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 PPE51_4020. 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 PPE51_4020 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_PPE51_4020 TYPE STANDARD TABLE OF PPE51_4020,
      WA_PPE51_4020 TYPE PPE51_4020,
      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: <PPE51_4020> TYPE PPE51_4020.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PPE51_4020.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PPE51_4020
  INTO TABLE IT_PPE51_4020.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPE51_4020
*  INTO TABLE @DATA(IT_PPE51_40202).
*--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_PPE51_4020 INDEX 1 INTO DATA(WA_PPE51_40202).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PPE51_4020 ASSIGNING <PPE51_4020>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPE51_4020>-MOLGA = 1.
<PPE51_4020>-CLASS = 1.
<PPE51_4020>-PTYPE = 1.
<PPE51_4020>-PT_TEXT = 1.
<PPE51_4020>-D_VALUE = 1.

ENDLOOP.

LOOP AT IT_PPE51_4020 INTO WA_PPE51_4020.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPE51_4020-D_TEXT, sy-vline,
  WA_PPE51_4020-TXTMOD, sy-vline,
  WA_PPE51_4020-TXTMOD_NR, sy-vline,
  WA_PPE51_4020-TXTMODTEXT, sy-vline,
  WA_PPE51_4020-TABLE_FLD, sy-vline,
  WA_PPE51_4020-TABLENAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPE51_4020 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_PPE51_4020 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_PPE51_4020 INTO WA_PPE51_4020.


*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_PPE51_4020_STR, 
MOLGA TYPE STRING,
CLASS TYPE STRING,
PTYPE TYPE STRING,
PT_TEXT TYPE STRING,
D_VALUE TYPE STRING,
D_TEXT TYPE STRING,
TXTMOD TYPE STRING,
TXTMOD_NR TYPE STRING,
TXTMODTEXT TYPE STRING,
TABLE_FLD TYPE STRING,
TABLENAME TYPE STRING,
TABLETEXT TYPE STRING,
FIELDNAME TYPE STRING,
FIELDTEXT TYPE STRING,
LINNO TYPE STRING,
FCOLS TYPE STRING,
LGART TYPE STRING,
LGARTTEXT TYPE STRING,
LGARTKZTXT TYPE STRING,
SLART TYPE STRING,
FLENG TYPE STRING,
ALTFLENG TYPE STRING,
ALTFCONV_X TYPE STRING,
ALTFCONV TYPE STRING,
AFCONVTEXT TYPE STRING,
FCONV_X TYPE STRING,
FCONV TYPE STRING,
FCONVTEXT TYPE STRING,
REGEL TYPE STRING,
OFFLD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPE51_4020_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_PPE51_4020_STR-MOLGA sy-vline 
WA_PPE51_4020_STR-CLASS sy-vline 
WA_PPE51_4020_STR-PTYPE sy-vline 
WA_PPE51_4020_STR-PT_TEXT sy-vline 
WA_PPE51_4020_STR-D_VALUE sy-vline 
WA_PPE51_4020_STR-D_TEXT sy-vline 
WA_PPE51_4020_STR-TXTMOD sy-vline 
WA_PPE51_4020_STR-TXTMOD_NR sy-vline 
WA_PPE51_4020_STR-TXTMODTEXT sy-vline 
WA_PPE51_4020_STR-TABLE_FLD sy-vline 
WA_PPE51_4020_STR-TABLENAME sy-vline 
WA_PPE51_4020_STR-TABLETEXT sy-vline 
WA_PPE51_4020_STR-FIELDNAME sy-vline 
WA_PPE51_4020_STR-FIELDTEXT sy-vline 
WA_PPE51_4020_STR-LINNO sy-vline 
WA_PPE51_4020_STR-FCOLS sy-vline 
WA_PPE51_4020_STR-LGART sy-vline 
WA_PPE51_4020_STR-LGARTTEXT sy-vline 
WA_PPE51_4020_STR-LGARTKZTXT sy-vline 
WA_PPE51_4020_STR-SLART sy-vline 
WA_PPE51_4020_STR-FLENG sy-vline 
WA_PPE51_4020_STR-ALTFLENG sy-vline 
WA_PPE51_4020_STR-ALTFCONV_X sy-vline 
WA_PPE51_4020_STR-ALTFCONV sy-vline 
WA_PPE51_4020_STR-AFCONVTEXT sy-vline 
WA_PPE51_4020_STR-FCONV_X sy-vline 
WA_PPE51_4020_STR-FCONV sy-vline 
WA_PPE51_4020_STR-FCONVTEXT sy-vline 
WA_PPE51_4020_STR-REGEL sy-vline 
WA_PPE51_4020_STR-OFFLD sy-vline      INTO ld_text SEPARATED BY SPACE.

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