ABAP Select data from SAP table IEBILLGITM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IEBILLGITM
*  INTO TABLE @DATA(IT_IEBILLGITM2).
*--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_IEBILLGITM INDEX 1 INTO DATA(WA_IEBILLGITM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IEBILLGITM>-MANDT = 1.
<IEBILLGITM>-UTILITIESBILLINGDOCUMENT = 1.
<IEBILLGITM>-UTILITIESBILLINGDOCLINEITEM = 1.
<IEBILLGITM>-UTILSLINEITMISPOSTGRELEVANT = 1.
<IEBILLGITM>-UTILSLINEITMISBDGTBILLGAMTRLVT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IEBILLGITM-UTILSBILLGQUANTITYPREDECIMALS, sy-vline,
  WA_IEBILLGITM-UTILSBILLGQUANTITYDECIMALS, sy-vline,
  WA_IEBILLGITM-UTILSBILLGDOCLINEITEMSTARTDATE, sy-vline,
  WA_IEBILLGITM-UTILSBILLGDOCLINEITEMENDDATE, sy-vline,
  WA_IEBILLGITM-UTILSBILLGDOCLINEITEMTYPE, sy-vline,
  WA_IEBILLGITM-BILLINGMEASUREMENTUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IEBILLGITM 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_IEBILLGITM 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_IEBILLGITM INTO WA_IEBILLGITM.


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

*Conversion exit CUNIT, internal->external for field BILLINGMEASUREMENTUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IEBILLGITM-BILLINGMEASUREMENTUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IEBILLGITM-BILLINGMEASUREMENTUNIT.
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_IEBILLGITM_STR, 
MANDT TYPE STRING,
UTILITIESBILLINGDOCUMENT TYPE STRING,
UTILITIESBILLINGDOCLINEITEM TYPE STRING,
UTILSLINEITMISPOSTGRELEVANT TYPE STRING,
UTILSLINEITMISBDGTBILLGAMTRLVT TYPE STRING,
UTILSBILLGQUANTITYPREDECIMALS TYPE STRING,
UTILSBILLGQUANTITYDECIMALS TYPE STRING,
UTILSBILLGDOCLINEITEMSTARTDATE TYPE STRING,
UTILSBILLGDOCLINEITEMENDDATE TYPE STRING,
UTILSBILLGDOCLINEITEMTYPE TYPE STRING,
BILLINGMEASUREMENTUNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IEBILLGITM_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_IEBILLGITM_STR-MANDT sy-vline 
WA_IEBILLGITM_STR-UTILITIESBILLINGDOCUMENT sy-vline 
WA_IEBILLGITM_STR-UTILITIESBILLINGDOCLINEITEM sy-vline 
WA_IEBILLGITM_STR-UTILSLINEITMISPOSTGRELEVANT sy-vline 
WA_IEBILLGITM_STR-UTILSLINEITMISBDGTBILLGAMTRLVT sy-vline 
WA_IEBILLGITM_STR-UTILSBILLGQUANTITYPREDECIMALS sy-vline 
WA_IEBILLGITM_STR-UTILSBILLGQUANTITYDECIMALS sy-vline 
WA_IEBILLGITM_STR-UTILSBILLGDOCLINEITEMSTARTDATE sy-vline 
WA_IEBILLGITM_STR-UTILSBILLGDOCLINEITEMENDDATE sy-vline 
WA_IEBILLGITM_STR-UTILSBILLGDOCLINEITEMTYPE sy-vline 
WA_IEBILLGITM_STR-BILLINGMEASUREMENTUNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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