ABAP Select data from SAP table SMEINH_WSUEB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SMEINH_WSUEB
*  INTO TABLE @DATA(IT_SMEINH_WSUEB2).
*--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_SMEINH_WSUEB INDEX 1 INTO DATA(WA_SMEINH_WSUEB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SMEINH_WSUEB>-WSMEI = 1.
<SMEINH_WSUEB>-ATNAM = 1.
<SMEINH_WSUEB>-ATWRT = 1.
<SMEINH_WSUEB>-XFHDW = 1.
<SMEINH_WSUEB>-XBEWW = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SMEINH_WSUEB-MESRT, sy-vline,
  WA_SMEINH_WSUEB-PCBUT, sy-vline,
  WA_SMEINH_WSUEB-WSSFN, sy-vline,
  WA_SMEINH_WSUEB-UMREZ, sy-vline,
  WA_SMEINH_WSUEB-UMREN, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_SMEINH_WSUEB 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_SMEINH_WSUEB 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_SMEINH_WSUEB INTO WA_SMEINH_WSUEB.


*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 WSMEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_SMEINH_WSUEB-WSMEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SMEINH_WSUEB-WSMEI.
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_SMEINH_WSUEB_STR, 
WSMEI TYPE STRING,
ATNAM TYPE STRING,
ATWRT TYPE STRING,
XFHDW TYPE STRING,
XBEWW TYPE STRING,
MESRT TYPE STRING,
PCBUT TYPE STRING,
WSSFN TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SMEINH_WSUEB_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_SMEINH_WSUEB_STR-WSMEI sy-vline 
WA_SMEINH_WSUEB_STR-ATNAM sy-vline 
WA_SMEINH_WSUEB_STR-ATWRT sy-vline 
WA_SMEINH_WSUEB_STR-XFHDW sy-vline 
WA_SMEINH_WSUEB_STR-XBEWW sy-vline 
WA_SMEINH_WSUEB_STR-MESRT sy-vline 
WA_SMEINH_WSUEB_STR-PCBUT sy-vline 
WA_SMEINH_WSUEB_STR-WSSFN sy-vline 
WA_SMEINH_WSUEB_STR-UMREZ sy-vline 
WA_SMEINH_WSUEB_STR-UMREN sy-vline      INTO ld_text SEPARATED BY SPACE.

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