ABAP Select data from SAP table ATP_PLPW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ATP_PLPW
*  INTO TABLE @DATA(IT_ATP_PLPW2).
*--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_ATP_PLPW INDEX 1 INTO DATA(WA_ATP_PLPW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ATP_PLPW>-MANDT = 1.
<ATP_PLPW>-MATNR = 1.
<ATP_PLPW>-PWWRK = 1.
<ATP_PLPW>-PLNUM = 1.
<ATP_PLPW>-BESKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ATP_PLPW-SOBES, sy-vline,
  WA_ATP_PLPW-GSMNG, sy-vline,
  WA_ATP_PLPW-AVMNG, sy-vline,
  WA_ATP_PLPW-PSTTR, sy-vline,
  WA_ATP_PLPW-LGORT, sy-vline,
  WA_ATP_PLPW-KDAUF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ATP_PLPW 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_ATP_PLPW 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_ATP_PLPW INTO WA_ATP_PLPW.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ATP_PLPW-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_PLPW-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ATP_PLPW-PLNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_PLPW-PLNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ATP_PLPW-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_PLPW-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPEL
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_ATP_PLPW-PSPEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_PLPW-PSPEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ATP_PLPW-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_PLPW-MEINS.
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_ATP_PLPW_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
PWWRK TYPE STRING,
PLNUM TYPE STRING,
BESKZ TYPE STRING,
SOBES TYPE STRING,
GSMNG TYPE STRING,
AVMNG TYPE STRING,
PSTTR TYPE STRING,
LGORT TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
SOBKZ TYPE STRING,
PSPEL TYPE STRING,
MEINS TYPE STRING,
PLWRK TYPE STRING,
BERID TYPE STRING,
PEDTR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ATP_PLPW_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_ATP_PLPW_STR-MANDT sy-vline 
WA_ATP_PLPW_STR-MATNR sy-vline 
WA_ATP_PLPW_STR-PWWRK sy-vline 
WA_ATP_PLPW_STR-PLNUM sy-vline 
WA_ATP_PLPW_STR-BESKZ sy-vline 
WA_ATP_PLPW_STR-SOBES sy-vline 
WA_ATP_PLPW_STR-GSMNG sy-vline 
WA_ATP_PLPW_STR-AVMNG sy-vline 
WA_ATP_PLPW_STR-PSTTR sy-vline 
WA_ATP_PLPW_STR-LGORT sy-vline 
WA_ATP_PLPW_STR-KDAUF sy-vline 
WA_ATP_PLPW_STR-KDPOS sy-vline 
WA_ATP_PLPW_STR-SOBKZ sy-vline 
WA_ATP_PLPW_STR-PSPEL sy-vline 
WA_ATP_PLPW_STR-MEINS sy-vline 
WA_ATP_PLPW_STR-PLWRK sy-vline 
WA_ATP_PLPW_STR-BERID sy-vline 
WA_ATP_PLPW_STR-PEDTR sy-vline      INTO ld_text SEPARATED BY SPACE.

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