ABAP Select data from SAP table EINSTIEGLISTE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EINSTIEGLISTE
*  INTO TABLE @DATA(IT_EINSTIEGLISTE2).
*--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_EINSTIEGLISTE INDEX 1 INTO DATA(WA_EINSTIEGLISTE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EINSTIEGLISTE>-WERKS = 1.
<EINSTIEGLISTE>-MANDT = 1.
<EINSTIEGLISTE>-MRPPP = 1.
<EINSTIEGLISTE>-PRAST = 1.
<EINSTIEGLISTE>-DETLI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EINSTIEGLISTE-LKOPF, sy-vline,
  WA_EINSTIEGLISTE-EZPER, sy-vline,
  WA_EINSTIEGLISTE-MEINH, sy-vline,
  WA_EINSTIEGLISTE-INPER, sy-vline,
  WA_EINSTIEGLISTE-KDSRT, sy-vline,
  WA_EINSTIEGLISTE-WZFLG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EINSTIEGLISTE 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_EINSTIEGLISTE 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_EINSTIEGLISTE INTO WA_EINSTIEGLISTE.


*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 CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EINSTIEGLISTE-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EINSTIEGLISTE-MEINH.
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_EINSTIEGLISTE_STR, 
WERKS TYPE STRING,
MANDT TYPE STRING,
MRPPP TYPE STRING,
PRAST TYPE STRING,
DETLI TYPE STRING,
LKOPF TYPE STRING,
EZPER TYPE STRING,
MEINH TYPE STRING,
INPER TYPE STRING,
KDSRT TYPE STRING,
WZFLG TYPE STRING,
MTREE TYPE STRING,
ATREE TYPE STRING,
BEDVL TYPE STRING,
VRFWE TYPE STRING,
NAVPR TYPE STRING,
DFILT TYPE STRING,
ERGBZ TYPE STRING,
FILBZ TYPE STRING,
PRREG TYPE STRING,
PRRLT TYPE STRING,
SBZKZ TYPE STRING,
MEMFL TYPE STRING,
MTRPO TYPE STRING,
MTRSZ TYPE STRING,
MTOLD TYPE STRING,
ORDPR TYPE STRING,
MDATS TYPE STRING,
MDNVM TYPE STRING,
MDKUM TYPE STRING,
MDSEPDB TYPE STRING,
ADPIC_NO_AGGR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EINSTIEGLISTE_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_EINSTIEGLISTE_STR-WERKS sy-vline 
WA_EINSTIEGLISTE_STR-MANDT sy-vline 
WA_EINSTIEGLISTE_STR-MRPPP sy-vline 
WA_EINSTIEGLISTE_STR-PRAST sy-vline 
WA_EINSTIEGLISTE_STR-DETLI sy-vline 
WA_EINSTIEGLISTE_STR-LKOPF sy-vline 
WA_EINSTIEGLISTE_STR-EZPER sy-vline 
WA_EINSTIEGLISTE_STR-MEINH sy-vline 
WA_EINSTIEGLISTE_STR-INPER sy-vline 
WA_EINSTIEGLISTE_STR-KDSRT sy-vline 
WA_EINSTIEGLISTE_STR-WZFLG sy-vline 
WA_EINSTIEGLISTE_STR-MTREE sy-vline 
WA_EINSTIEGLISTE_STR-ATREE sy-vline 
WA_EINSTIEGLISTE_STR-BEDVL sy-vline 
WA_EINSTIEGLISTE_STR-VRFWE sy-vline 
WA_EINSTIEGLISTE_STR-NAVPR sy-vline 
WA_EINSTIEGLISTE_STR-DFILT sy-vline 
WA_EINSTIEGLISTE_STR-ERGBZ sy-vline 
WA_EINSTIEGLISTE_STR-FILBZ sy-vline 
WA_EINSTIEGLISTE_STR-PRREG sy-vline 
WA_EINSTIEGLISTE_STR-PRRLT sy-vline 
WA_EINSTIEGLISTE_STR-SBZKZ sy-vline 
WA_EINSTIEGLISTE_STR-MEMFL sy-vline 
WA_EINSTIEGLISTE_STR-MTRPO sy-vline 
WA_EINSTIEGLISTE_STR-MTRSZ sy-vline 
WA_EINSTIEGLISTE_STR-MTOLD sy-vline 
WA_EINSTIEGLISTE_STR-ORDPR sy-vline 
WA_EINSTIEGLISTE_STR-MDATS sy-vline 
WA_EINSTIEGLISTE_STR-MDNVM sy-vline 
WA_EINSTIEGLISTE_STR-MDKUM sy-vline 
WA_EINSTIEGLISTE_STR-MDSEPDB sy-vline 
WA_EINSTIEGLISTE_STR-ADPIC_NO_AGGR sy-vline      INTO ld_text SEPARATED BY SPACE.

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