ABAP Select data from SAP table LEMOBBUTTON into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LEMOBBUTTON
*  INTO TABLE @DATA(IT_LEMOBBUTTON2).
*--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_LEMOBBUTTON INDEX 1 INTO DATA(WA_LEMOBBUTTON2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LEMOBBUTTON>-RPOST = 1.
<LEMOBBUTTON>-RGTO = 1.
<LEMOBBUTTON>-RDELIT = 1.
<LEMOBBUTTON>-RSHIP = 1.
<LEMOBBUTTON>-RDIFF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LEMOBBUTTON-RSPLIT, sy-vline,
  WA_LEMOBBUTTON-RSEL, sy-vline,
  WA_LEMOBBUTTON-RCHECK, sy-vline,
  WA_LEMOBBUTTON-RPACK, sy-vline,
  WA_LEMOBBUTTON-RPICK, sy-vline,
  WA_LEMOBBUTTON-RMORE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LEMOBBUTTON 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_LEMOBBUTTON 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_LEMOBBUTTON INTO WA_LEMOBBUTTON.


*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_LEMOBBUTTON_STR, 
RPOST TYPE STRING,
RGTO TYPE STRING,
RDELIT TYPE STRING,
RSHIP TYPE STRING,
RDIFF TYPE STRING,
RSPLIT TYPE STRING,
RSEL TYPE STRING,
RCHECK TYPE STRING,
RPACK TYPE STRING,
RPICK TYPE STRING,
RMORE TYPE STRING,
RUNPACK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LEMOBBUTTON_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_LEMOBBUTTON_STR-RPOST sy-vline 
WA_LEMOBBUTTON_STR-RGTO sy-vline 
WA_LEMOBBUTTON_STR-RDELIT sy-vline 
WA_LEMOBBUTTON_STR-RSHIP sy-vline 
WA_LEMOBBUTTON_STR-RDIFF sy-vline 
WA_LEMOBBUTTON_STR-RSPLIT sy-vline 
WA_LEMOBBUTTON_STR-RSEL sy-vline 
WA_LEMOBBUTTON_STR-RCHECK sy-vline 
WA_LEMOBBUTTON_STR-RPACK sy-vline 
WA_LEMOBBUTTON_STR-RPICK sy-vline 
WA_LEMOBBUTTON_STR-RMORE sy-vline 
WA_LEMOBBUTTON_STR-RUNPACK sy-vline      INTO ld_text SEPARATED BY SPACE.

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