ABAP Select data from SAP table BAPIBUS20001_BILLING_DIS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BAPIBUS20001_BILLING_DIS 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 BAPIBUS20001_BILLING_DIS. 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 BAPIBUS20001_BILLING_DIS 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_BAPIBUS20001_BILLING_DIS TYPE STANDARD TABLE OF BAPIBUS20001_BILLING_DIS,
      WA_BAPIBUS20001_BILLING_DIS TYPE BAPIBUS20001_BILLING_DIS,
      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: <BAPIBUS20001_BILLING_DIS> TYPE BAPIBUS20001_BILLING_DIS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BAPIBUS20001_BILLING_DIS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BAPIBUS20001_BILLING_DIS
  INTO TABLE IT_BAPIBUS20001_BILLING_DIS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPIBUS20001_BILLING_DIS
*  INTO TABLE @DATA(IT_BAPIBUS20001_BILLING_DIS2).
*--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_BAPIBUS20001_BILLING_DIS INDEX 1 INTO DATA(WA_BAPIBUS20001_BILLING_DIS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BAPIBUS20001_BILLING_DIS ASSIGNING <BAPIBUS20001_BILLING_DIS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPIBUS20001_BILLING_DIS>-REF_GUID = 1.
<BAPIBUS20001_BILLING_DIS>-REF_KIND = 1.
<BAPIBUS20001_BILLING_DIS>-GUID = 1.
<BAPIBUS20001_BILLING_DIS>-PERIOD_DATE = 1.
<BAPIBUS20001_BILLING_DIS>-RULE_PERIOD_DATE = 1.

ENDLOOP.

LOOP AT IT_BAPIBUS20001_BILLING_DIS INTO WA_BAPIBUS20001_BILLING_DIS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPIBUS20001_BILLING_DIS-SETTL_FROM, sy-vline,
  WA_BAPIBUS20001_BILLING_DIS-RULE_SETTL_FROM, sy-vline,
  WA_BAPIBUS20001_BILLING_DIS-SETTL_TO, sy-vline,
  WA_BAPIBUS20001_BILLING_DIS-RULE_SETTL_TO, sy-vline,
  WA_BAPIBUS20001_BILLING_DIS-BILL_DATE, sy-vline,
  WA_BAPIBUS20001_BILLING_DIS-RULE_BILL_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPIBUS20001_BILLING_DIS 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_BAPIBUS20001_BILLING_DIS 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_BAPIBUS20001_BILLING_DIS INTO WA_BAPIBUS20001_BILLING_DIS.


*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 TSTPS, internal->external for field PERIOD_DATE
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_BAPIBUS20001_BILLING_DIS-PERIOD_DATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIBUS20001_BILLING_DIS-PERIOD_DATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field SETTL_FROM
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_BAPIBUS20001_BILLING_DIS-SETTL_FROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIBUS20001_BILLING_DIS-SETTL_FROM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field SETTL_TO
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_BAPIBUS20001_BILLING_DIS-SETTL_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIBUS20001_BILLING_DIS-SETTL_TO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field BILL_DATE
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_BAPIBUS20001_BILLING_DIS-BILL_DATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIBUS20001_BILLING_DIS-BILL_DATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field INVCR_DATE
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_BAPIBUS20001_BILLING_DIS-INVCR_DATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIBUS20001_BILLING_DIS-INVCR_DATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field SETTL_FIMA
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_BAPIBUS20001_BILLING_DIS-SETTL_FIMA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIBUS20001_BILLING_DIS-SETTL_FIMA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BUAG_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPIBUS20001_BILLING_DIS-BUAG_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIBUS20001_BILLING_DIS-BUAG_ID.
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_BAPIBUS20001_BILLING_DIS_STR, 
REF_GUID TYPE STRING,
REF_KIND TYPE STRING,
GUID TYPE STRING,
PERIOD_DATE TYPE STRING,
RULE_PERIOD_DATE TYPE STRING,
SETTL_FROM TYPE STRING,
RULE_SETTL_FROM TYPE STRING,
SETTL_TO TYPE STRING,
RULE_SETTL_TO TYPE STRING,
BILL_DATE TYPE STRING,
RULE_BILL_DATE TYPE STRING,
INVCR_DATE TYPE STRING,
RULE_INVCR_DATE TYPE STRING,
BILLING_TIMEZONE TYPE STRING,
SETTL_FIMA TYPE STRING,
BILLING_BLOCK TYPE STRING,
PARENT_GUID TYPE STRING,
KIND_PERIOD_DATE TYPE STRING,
KIND_SETTL_FROM TYPE STRING,
KIND_SETTL_TO TYPE STRING,
KIND_BILL_DATE TYPE STRING,
KIND_INVCR_DATE TYPE STRING,
BILLING_MODE TYPE STRING,
SETTL_FROM_TZTF TYPE STRING,
SETTL_TO_TZTF TYPE STRING,
INVCR_DATE_TZTF TYPE STRING,
BUAG_GUID TYPE STRING,
BUAG_ID TYPE STRING,
MANDATE_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPIBUS20001_BILLING_DIS_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_BAPIBUS20001_BILLING_DIS_STR-REF_GUID sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-REF_KIND sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-GUID sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-PERIOD_DATE sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-RULE_PERIOD_DATE sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-SETTL_FROM sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-RULE_SETTL_FROM sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-SETTL_TO sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-RULE_SETTL_TO sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-BILL_DATE sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-RULE_BILL_DATE sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-INVCR_DATE sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-RULE_INVCR_DATE sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-BILLING_TIMEZONE sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-SETTL_FIMA sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-BILLING_BLOCK sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-PARENT_GUID sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-KIND_PERIOD_DATE sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-KIND_SETTL_FROM sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-KIND_SETTL_TO sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-KIND_BILL_DATE sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-KIND_INVCR_DATE sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-BILLING_MODE sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-SETTL_FROM_TZTF sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-SETTL_TO_TZTF sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-INVCR_DATE_TZTF sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-BUAG_GUID sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-BUAG_ID sy-vline 
WA_BAPIBUS20001_BILLING_DIS_STR-MANDATE_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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