ABAP Select data from SAP table ATP_R4D_SURPLUS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ATP_R4D_SURPLUS 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_R4D_SURPLUS. 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_R4D_SURPLUS 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_R4D_SURPLUS TYPE STANDARD TABLE OF ATP_R4D_SURPLUS,
      WA_ATP_R4D_SURPLUS TYPE ATP_R4D_SURPLUS,
      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_R4D_SURPLUS> TYPE ATP_R4D_SURPLUS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ATP_R4D_SURPLUS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ATP_R4D_SURPLUS
  INTO TABLE IT_ATP_R4D_SURPLUS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ATP_R4D_SURPLUS
*  INTO TABLE @DATA(IT_ATP_R4D_SURPLUS2).
*--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_R4D_SURPLUS INDEX 1 INTO DATA(WA_ATP_R4D_SURPLUS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ATP_R4D_SURPLUS ASSIGNING <ATP_R4D_SURPLUS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ATP_R4D_SURPLUS>-MANDT = 1.
<ATP_R4D_SURPLUS>-RFDYSURPLUSBUCKETUUID = 1.
<ATP_R4D_SURPLUS>-RFDYMATERIALUUID = 1.
<ATP_R4D_SURPLUS>-SUPPLYINGSTORAGELOCATION = 1.
<ATP_R4D_SURPLUS>-BATCH = 1.

ENDLOOP.

LOOP AT IT_ATP_R4D_SURPLUS INTO WA_ATP_R4D_SURPLUS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ATP_R4D_SURPLUS-PERIODSTARTUTCDATETIME, sy-vline,
  WA_ATP_R4D_SURPLUS-PERIODSTARTTIMEZONE, sy-vline,
  WA_ATP_R4D_SURPLUS-SURPLUSQUANTITYINBASEUNIT, sy-vline,
  WA_ATP_R4D_SURPLUS-UNCONSIDEREDQUANTITYINBASEUNIT, sy-vline,
  WA_ATP_R4D_SURPLUS-BASEUNIT, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_ATP_R4D_SURPLUS 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_R4D_SURPLUS 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_R4D_SURPLUS INTO WA_ATP_R4D_SURPLUS.


*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 CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ATP_R4D_SURPLUS-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_R4D_SURPLUS-BASEUNIT.
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_R4D_SURPLUS_STR, 
MANDT TYPE STRING,
RFDYSURPLUSBUCKETUUID TYPE STRING,
RFDYMATERIALUUID TYPE STRING,
SUPPLYINGSTORAGELOCATION TYPE STRING,
BATCH TYPE STRING,
PERIODSTARTUTCDATETIME TYPE STRING,
PERIODSTARTTIMEZONE TYPE STRING,
SURPLUSQUANTITYINBASEUNIT TYPE STRING,
UNCONSIDEREDQUANTITYINBASEUNIT TYPE STRING,
BASEUNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ATP_R4D_SURPLUS_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_R4D_SURPLUS_STR-MANDT sy-vline 
WA_ATP_R4D_SURPLUS_STR-RFDYSURPLUSBUCKETUUID sy-vline 
WA_ATP_R4D_SURPLUS_STR-RFDYMATERIALUUID sy-vline 
WA_ATP_R4D_SURPLUS_STR-SUPPLYINGSTORAGELOCATION sy-vline 
WA_ATP_R4D_SURPLUS_STR-BATCH sy-vline 
WA_ATP_R4D_SURPLUS_STR-PERIODSTARTUTCDATETIME sy-vline 
WA_ATP_R4D_SURPLUS_STR-PERIODSTARTTIMEZONE sy-vline 
WA_ATP_R4D_SURPLUS_STR-SURPLUSQUANTITYINBASEUNIT sy-vline 
WA_ATP_R4D_SURPLUS_STR-UNCONSIDEREDQUANTITYINBASEUNIT sy-vline 
WA_ATP_R4D_SURPLUS_STR-BASEUNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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