ABAP Select data from SAP table BAPINEXTEVENT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPINEXTEVENT
*  INTO TABLE @DATA(IT_BAPINEXTEVENT2).
*--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_BAPINEXTEVENT INDEX 1 INTO DATA(WA_BAPINEXTEVENT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPINEXTEVENT>-EVTCNT = 1.
<BAPINEXTEVENT>-LOCCOD = 1.
<BAPINEXTEVENT>-LOCID1 = 1.
<BAPINEXTEVENT>-LOCID2 = 1.
<BAPINEXTEVENT>-LOCNAM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPINEXTEVENT-LOCZON, sy-vline,
  WA_BAPINEXTEVENT-PARROL, sy-vline,
  WA_BAPINEXTEVENT-PARCOD, sy-vline,
  WA_BAPINEXTEVENT-PARID, sy-vline,
  WA_BAPINEXTEVENT-PARNAM, sy-vline,
  WA_BAPINEXTEVENT-NSTNUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPINEXTEVENT 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_BAPINEXTEVENT 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_BAPINEXTEVENT INTO WA_BAPINEXTEVENT.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_BAPINEXTEVENT_STR, 
EVTCNT TYPE STRING,
LOCCOD TYPE STRING,
LOCID1 TYPE STRING,
LOCID2 TYPE STRING,
LOCNAM TYPE STRING,
LOCZON TYPE STRING,
PARROL TYPE STRING,
PARCOD TYPE STRING,
PARID TYPE STRING,
PARNAM TYPE STRING,
NSTNUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPINEXTEVENT_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_BAPINEXTEVENT_STR-EVTCNT sy-vline 
WA_BAPINEXTEVENT_STR-LOCCOD sy-vline 
WA_BAPINEXTEVENT_STR-LOCID1 sy-vline 
WA_BAPINEXTEVENT_STR-LOCID2 sy-vline 
WA_BAPINEXTEVENT_STR-LOCNAM sy-vline 
WA_BAPINEXTEVENT_STR-LOCZON sy-vline 
WA_BAPINEXTEVENT_STR-PARROL sy-vline 
WA_BAPINEXTEVENT_STR-PARCOD sy-vline 
WA_BAPINEXTEVENT_STR-PARID sy-vline 
WA_BAPINEXTEVENT_STR-PARNAM sy-vline 
WA_BAPINEXTEVENT_STR-NSTNUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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