ABAP Select data from SAP table IAPPSTLDATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IAPPSTLDATA
*  INTO TABLE @DATA(IT_IAPPSTLDATA2).
*--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_IAPPSTLDATA INDEX 1 INTO DATA(WA_IAPPSTLDATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IAPPSTLDATA>-MANDT = 1.
<IAPPSTLDATA>-CONTRACTAPPLICATIONUUID = 1.
<IAPPSTLDATA>-CONTRACTAPPLICATIONVERSION = 1.
<IAPPSTLDATA>-CONTRACTNUM = 1.
<IAPPSTLDATA>-CONTRACTITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IAPPSTLDATA-CONTRACTCOMMODITYITEM, sy-vline,
  WA_IAPPSTLDATA-REFERENCEAPPLICATIONDOCUMENT, sy-vline,
  WA_IAPPSTLDATA-REFERENCEAPPLICATIONITEM, sy-vline,
  WA_IAPPSTLDATA-PROVISIONALSETTLEDQUANTITY, sy-vline,
  WA_IAPPSTLDATA-FINALSETTLEDQUANTITY, sy-vline,
  WA_IAPPSTLDATA-ACMTRDGCONTRRETURNSETTLEDQTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IAPPSTLDATA 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_IAPPSTLDATA 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_IAPPSTLDATA INTO WA_IAPPSTLDATA.


*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 CONTRACTNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IAPPSTLDATA-CONTRACTNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IAPPSTLDATA-CONTRACTNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field TRDGCONTRACTAPPLUNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IAPPSTLDATA-TRDGCONTRACTAPPLUNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IAPPSTLDATA-TRDGCONTRACTAPPLUNITOFMEASURE.
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_IAPPSTLDATA_STR, 
MANDT TYPE STRING,
CONTRACTAPPLICATIONUUID TYPE STRING,
CONTRACTAPPLICATIONVERSION TYPE STRING,
CONTRACTNUM TYPE STRING,
CONTRACTITEM TYPE STRING,
CONTRACTCOMMODITYITEM TYPE STRING,
REFERENCEAPPLICATIONDOCUMENT TYPE STRING,
REFERENCEAPPLICATIONITEM TYPE STRING,
PROVISIONALSETTLEDQUANTITY TYPE STRING,
FINALSETTLEDQUANTITY TYPE STRING,
ACMTRDGCONTRRETURNSETTLEDQTY TYPE STRING,
UNDERFILLQUANTITY TYPE STRING,
PROVISIONALUNDERFILLQUANTITY TYPE STRING,
OVERFILLQUANTITY TYPE STRING,
PROVISIONALOVERFILLQUANTITY TYPE STRING,
TRDGCONTRACTAPPLUNITOFMEASURE TYPE STRING,
SETTLMTCAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IAPPSTLDATA_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_IAPPSTLDATA_STR-MANDT sy-vline 
WA_IAPPSTLDATA_STR-CONTRACTAPPLICATIONUUID sy-vline 
WA_IAPPSTLDATA_STR-CONTRACTAPPLICATIONVERSION sy-vline 
WA_IAPPSTLDATA_STR-CONTRACTNUM sy-vline 
WA_IAPPSTLDATA_STR-CONTRACTITEM sy-vline 
WA_IAPPSTLDATA_STR-CONTRACTCOMMODITYITEM sy-vline 
WA_IAPPSTLDATA_STR-REFERENCEAPPLICATIONDOCUMENT sy-vline 
WA_IAPPSTLDATA_STR-REFERENCEAPPLICATIONITEM sy-vline 
WA_IAPPSTLDATA_STR-PROVISIONALSETTLEDQUANTITY sy-vline 
WA_IAPPSTLDATA_STR-FINALSETTLEDQUANTITY sy-vline 
WA_IAPPSTLDATA_STR-ACMTRDGCONTRRETURNSETTLEDQTY sy-vline 
WA_IAPPSTLDATA_STR-UNDERFILLQUANTITY sy-vline 
WA_IAPPSTLDATA_STR-PROVISIONALUNDERFILLQUANTITY sy-vline 
WA_IAPPSTLDATA_STR-OVERFILLQUANTITY sy-vline 
WA_IAPPSTLDATA_STR-PROVISIONALOVERFILLQUANTITY sy-vline 
WA_IAPPSTLDATA_STR-TRDGCONTRACTAPPLUNITOFMEASURE sy-vline 
WA_IAPPSTLDATA_STR-SETTLMTCAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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