ABAP Select data from SAP table BAPIBUS20001_APPOINTMENT_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_APPOINTMENT_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_APPOINTMENT_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_APPOINTMENT_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_APPOINTMENT_DIS TYPE STANDARD TABLE OF BAPIBUS20001_APPOINTMENT_DIS,
      WA_BAPIBUS20001_APPOINTMENT_DIS TYPE BAPIBUS20001_APPOINTMENT_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_APPOINTMENT_DIS> TYPE BAPIBUS20001_APPOINTMENT_DIS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BAPIBUS20001_APPOINTMENT_DIS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BAPIBUS20001_APPOINTMENT_DIS
  INTO TABLE IT_BAPIBUS20001_APPOINTMENT_DIS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPIBUS20001_APPOINTMENT_DIS
*  INTO TABLE @DATA(IT_BAPIBUS20001_APPOINTMENT_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_APPOINTMENT_DIS INDEX 1 INTO DATA(WA_BAPIBUS20001_APPOINTMENT_DIS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BAPIBUS20001_APPOINTMENT_DIS ASSIGNING <BAPIBUS20001_APPOINTMENT_DIS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPIBUS20001_APPOINTMENT_DIS>-REF_GUID = 1.
<BAPIBUS20001_APPOINTMENT_DIS>-REF_KIND = 1.
<BAPIBUS20001_APPOINTMENT_DIS>-SET_GUID = 1.
<BAPIBUS20001_APPOINTMENT_DIS>-APPT_GUID = 1.
<BAPIBUS20001_APPOINTMENT_DIS>-APPT_TYPE = 1.

ENDLOOP.

LOOP AT IT_BAPIBUS20001_APPOINTMENT_DIS INTO WA_BAPIBUS20001_APPOINTMENT_DIS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPIBUS20001_APPOINTMENT_DIS-TIMESTAMP_FROM, sy-vline,
  WA_BAPIBUS20001_APPOINTMENT_DIS-TIMEZONE_FROM, sy-vline,
  WA_BAPIBUS20001_APPOINTMENT_DIS-TIMESTAMP_TO, sy-vline,
  WA_BAPIBUS20001_APPOINTMENT_DIS-TIMEZONE_TO, sy-vline,
  WA_BAPIBUS20001_APPOINTMENT_DIS-DATE_FROM, sy-vline,
  WA_BAPIBUS20001_APPOINTMENT_DIS-DATE_TO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPIBUS20001_APPOINTMENT_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_APPOINTMENT_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_APPOINTMENT_DIS INTO WA_BAPIBUS20001_APPOINTMENT_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 TIMESTAMP_FROM
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_BAPIBUS20001_APPOINTMENT_DIS-TIMESTAMP_FROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIBUS20001_APPOINTMENT_DIS-TIMESTAMP_FROM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field TIMESTAMP_TO
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_BAPIBUS20001_APPOINTMENT_DIS-TIMESTAMP_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIBUS20001_APPOINTMENT_DIS-TIMESTAMP_TO.
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_APPOINTMENT_DIS_STR, 
REF_GUID TYPE STRING,
REF_KIND TYPE STRING,
SET_GUID TYPE STRING,
APPT_GUID TYPE STRING,
APPT_TYPE TYPE STRING,
TIMESTAMP_FROM TYPE STRING,
TIMEZONE_FROM TYPE STRING,
TIMESTAMP_TO TYPE STRING,
TIMEZONE_TO TYPE STRING,
DATE_FROM TYPE STRING,
DATE_TO TYPE STRING,
TIME_FROM TYPE STRING,
TIME_TO TYPE STRING,
SHOW_LOCAL TYPE STRING,
DOMINANT TYPE STRING,
RULE_ID TYPE STRING,
RULE_GUID TYPE STRING,
RULE_NAME TYPE STRING,
DURATION TYPE STRING,
TIME_UNIT TYPE STRING,
IS_DURATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPIBUS20001_APPOINTMENT_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_APPOINTMENT_DIS_STR-REF_GUID sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-REF_KIND sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-SET_GUID sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-APPT_GUID sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-APPT_TYPE sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-TIMESTAMP_FROM sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-TIMEZONE_FROM sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-TIMESTAMP_TO sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-TIMEZONE_TO sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-DATE_FROM sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-DATE_TO sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-TIME_FROM sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-TIME_TO sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-SHOW_LOCAL sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-DOMINANT sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-RULE_ID sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-RULE_GUID sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-RULE_NAME sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-DURATION sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-TIME_UNIT sy-vline 
WA_BAPIBUS20001_APPOINTMENT_DIS_STR-IS_DURATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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