ABAP Select data from SAP table WCUS_TERM_RS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCUS_TERM_RS
*  INTO TABLE @DATA(IT_WCUS_TERM_RS2).
*--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_WCUS_TERM_RS INDEX 1 INTO DATA(WA_WCUS_TERM_RS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCUS_TERM_RS>-LSCH = 1.
<WCUS_TERM_RS>-SCHLU = 1.
<WCUS_TERM_RS>-ALLGVB = 1.
<WCUS_TERM_RS>-BEZEI = 1.
<WCUS_TERM_RS>-AVD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WCUS_TERM_RS-STEUG, sy-vline,
  WA_WCUS_TERM_RS-BEWART, sy-vline,
  WA_WCUS_TERM_RS-STWE, sy-vline,
  WA_WCUS_TERM_RS-STEU, sy-vline,
  WA_WCUS_TERM_RS-REG, sy-vline,
  WA_WCUS_TERM_RS-VGLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WCUS_TERM_RS 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_WCUS_TERM_RS 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_WCUS_TERM_RS INTO WA_WCUS_TERM_RS.


*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_WCUS_TERM_RS_STR, 
LSCH TYPE STRING,
SCHLU TYPE STRING,
ALLGVB TYPE STRING,
BEZEI TYPE STRING,
AVD TYPE STRING,
STEUG TYPE STRING,
BEWART TYPE STRING,
STWE TYPE STRING,
STEU TYPE STRING,
REG TYPE STRING,
VGLE TYPE STRING,
VGLD TYPE STRING,
VGLK TYPE STRING,
STEU_DIA TYPE STRING,
STEU_MDE TYPE STRING,
AUS_BEST TYPE STRING,
ZFELD TYPE STRING,
STEU_MDE_ZUS TYPE STRING,
STEUEW TYPE STRING,
STEUEK TYPE STRING,
SELEKTION TYPE STRING,
DATAUFB TYPE STRING,
ZUS TYPE STRING,
BEZEI_2 TYPE STRING,
PREIS_INFO TYPE STRING,
ANZEIG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WCUS_TERM_RS_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_WCUS_TERM_RS_STR-LSCH sy-vline 
WA_WCUS_TERM_RS_STR-SCHLU sy-vline 
WA_WCUS_TERM_RS_STR-ALLGVB sy-vline 
WA_WCUS_TERM_RS_STR-BEZEI sy-vline 
WA_WCUS_TERM_RS_STR-AVD sy-vline 
WA_WCUS_TERM_RS_STR-STEUG sy-vline 
WA_WCUS_TERM_RS_STR-BEWART sy-vline 
WA_WCUS_TERM_RS_STR-STWE sy-vline 
WA_WCUS_TERM_RS_STR-STEU sy-vline 
WA_WCUS_TERM_RS_STR-REG sy-vline 
WA_WCUS_TERM_RS_STR-VGLE sy-vline 
WA_WCUS_TERM_RS_STR-VGLD sy-vline 
WA_WCUS_TERM_RS_STR-VGLK sy-vline 
WA_WCUS_TERM_RS_STR-STEU_DIA sy-vline 
WA_WCUS_TERM_RS_STR-STEU_MDE sy-vline 
WA_WCUS_TERM_RS_STR-AUS_BEST sy-vline 
WA_WCUS_TERM_RS_STR-ZFELD sy-vline 
WA_WCUS_TERM_RS_STR-STEU_MDE_ZUS sy-vline 
WA_WCUS_TERM_RS_STR-STEUEW sy-vline 
WA_WCUS_TERM_RS_STR-STEUEK sy-vline 
WA_WCUS_TERM_RS_STR-SELEKTION sy-vline 
WA_WCUS_TERM_RS_STR-DATAUFB sy-vline 
WA_WCUS_TERM_RS_STR-ZUS sy-vline 
WA_WCUS_TERM_RS_STR-BEZEI_2 sy-vline 
WA_WCUS_TERM_RS_STR-PREIS_INFO sy-vline 
WA_WCUS_TERM_RS_STR-ANZEIG sy-vline      INTO ld_text SEPARATED BY SPACE.

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