ABAP Select data from SAP table LSBAPIEVDAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LSBAPIEVDAT
*  INTO TABLE @DATA(IT_LSBAPIEVDAT2).
*--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_LSBAPIEVDAT INDEX 1 INTO DATA(WA_LSBAPIEVDAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LSBAPIEVDAT>-PLVAR = 1.
<LSBAPIEVDAT>-EVEID = 1.
<LSBAPIEVDAT>-EVSHT = 1.
<LSBAPIEVDAT>-EVSTX = 1.
<LSBAPIEVDAT>-EVBEG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LSBAPIEVDAT-EVEND, sy-vline,
  WA_LSBAPIEVDAT-ETYID, sy-vline,
  WA_LSBAPIEVDAT-EVLNG, sy-vline,
  WA_LSBAPIEVDAT-KAPZ1, sy-vline,
  WA_LSBAPIEVDAT-KAPZ2, sy-vline,
  WA_LSBAPIEVDAT-KAPZ3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LSBAPIEVDAT 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_LSBAPIEVDAT 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_LSBAPIEVDAT INTO WA_LSBAPIEVDAT.


*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 ISOLA, internal->external for field EVLNG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_LSBAPIEVDAT-EVLNG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LSBAPIEVDAT-EVLNG.
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_LSBAPIEVDAT_STR, 
PLVAR TYPE STRING,
EVEID TYPE STRING,
EVSHT TYPE STRING,
EVSTX TYPE STRING,
EVBEG TYPE STRING,
EVEND TYPE STRING,
ETYID TYPE STRING,
EVLNG TYPE STRING,
KAPZ1 TYPE STRING,
KAPZ2 TYPE STRING,
KAPZ3 TYPE STRING,
FCONT TYPE STRING,
BCONT TYPE STRING,
WCONT TYPE STRING,
LOCID TYPE STRING,
EVLOC TYPE STRING,
ISTAT TYPE STRING,
EVEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LSBAPIEVDAT_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_LSBAPIEVDAT_STR-PLVAR sy-vline 
WA_LSBAPIEVDAT_STR-EVEID sy-vline 
WA_LSBAPIEVDAT_STR-EVSHT sy-vline 
WA_LSBAPIEVDAT_STR-EVSTX sy-vline 
WA_LSBAPIEVDAT_STR-EVBEG sy-vline 
WA_LSBAPIEVDAT_STR-EVEND sy-vline 
WA_LSBAPIEVDAT_STR-ETYID sy-vline 
WA_LSBAPIEVDAT_STR-EVLNG sy-vline 
WA_LSBAPIEVDAT_STR-KAPZ1 sy-vline 
WA_LSBAPIEVDAT_STR-KAPZ2 sy-vline 
WA_LSBAPIEVDAT_STR-KAPZ3 sy-vline 
WA_LSBAPIEVDAT_STR-FCONT sy-vline 
WA_LSBAPIEVDAT_STR-BCONT sy-vline 
WA_LSBAPIEVDAT_STR-WCONT sy-vline 
WA_LSBAPIEVDAT_STR-LOCID sy-vline 
WA_LSBAPIEVDAT_STR-EVLOC sy-vline 
WA_LSBAPIEVDAT_STR-ISTAT sy-vline 
WA_LSBAPIEVDAT_STR-EVEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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