ABAP Select data from SAP table IMPUNBILLREVN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMPUNBILLREVN
*  INTO TABLE @DATA(IT_IMPUNBILLREVN2).
*--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_IMPUNBILLREVN INDEX 1 INTO DATA(WA_IMPUNBILLREVN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMPUNBILLREVN>-MANDT = 1.
<IMPUNBILLREVN>-MASTERPROJECT = 1.
<IMPUNBILLREVN>-MASTERPROJECTUUID = 1.
<IMPUNBILLREVN>-MASTERPROJECTTYPE = 1.
<IMPUNBILLREVN>-MASTERPROJECTORGANIZATION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMPUNBILLREVN-MASTERPROJECTISCONFIDENTIAL, sy-vline,
  WA_IMPUNBILLREVN-CONTROLLINGAREACURRENCY, sy-vline,
  WA_IMPUNBILLREVN-UNITOFMEASURE, sy-vline,
  WA_IMPUNBILLREVN-UNBILLEDREVNINCTRLARCRCY, sy-vline,
  WA_IMPUNBILLREVN-TRANSACCRCYWIPAMOUNT, sy-vline,
  WA_IMPUNBILLREVN-OBJECTCRCYWIPAMOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMPUNBILLREVN 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_IMPUNBILLREVN 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_IMPUNBILLREVN INTO WA_IMPUNBILLREVN.


*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 UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IMPUNBILLREVN-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMPUNBILLREVN-UNITOFMEASURE.
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_IMPUNBILLREVN_STR, 
MANDT TYPE STRING,
MASTERPROJECT TYPE STRING,
MASTERPROJECTUUID TYPE STRING,
MASTERPROJECTTYPE TYPE STRING,
MASTERPROJECTORGANIZATION TYPE STRING,
MASTERPROJECTISCONFIDENTIAL TYPE STRING,
CONTROLLINGAREACURRENCY TYPE STRING,
UNITOFMEASURE TYPE STRING,
UNBILLEDREVNINCTRLARCRCY TYPE STRING,
TRANSACCRCYWIPAMOUNT TYPE STRING,
OBJECTCRCYWIPAMOUNT TYPE STRING,
CTRLGAREACRCYWIPAMOUNT TYPE STRING,
WIPQUANTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMPUNBILLREVN_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_IMPUNBILLREVN_STR-MANDT sy-vline 
WA_IMPUNBILLREVN_STR-MASTERPROJECT sy-vline 
WA_IMPUNBILLREVN_STR-MASTERPROJECTUUID sy-vline 
WA_IMPUNBILLREVN_STR-MASTERPROJECTTYPE sy-vline 
WA_IMPUNBILLREVN_STR-MASTERPROJECTORGANIZATION sy-vline 
WA_IMPUNBILLREVN_STR-MASTERPROJECTISCONFIDENTIAL sy-vline 
WA_IMPUNBILLREVN_STR-CONTROLLINGAREACURRENCY sy-vline 
WA_IMPUNBILLREVN_STR-UNITOFMEASURE sy-vline 
WA_IMPUNBILLREVN_STR-UNBILLEDREVNINCTRLARCRCY sy-vline 
WA_IMPUNBILLREVN_STR-TRANSACCRCYWIPAMOUNT sy-vline 
WA_IMPUNBILLREVN_STR-OBJECTCRCYWIPAMOUNT sy-vline 
WA_IMPUNBILLREVN_STR-CTRLGAREACRCYWIPAMOUNT sy-vline 
WA_IMPUNBILLREVN_STR-WIPQUANTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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