ABAP Select data from SAP table UCM_S_MASSRVS_DOCUMENT_KEY into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UCM_S_MASSRVS_DOCUMENT_KEY
*  INTO TABLE @DATA(IT_UCM_S_MASSRVS_DOCUMENT_KEY2).
*--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_UCM_S_MASSRVS_DOCUMENT_KEY INDEX 1 INTO DATA(WA_UCM_S_MASSRVS_DOCUMENT_KEY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UCM_S_MASSRVS_DOCUMENT_KEY>-INCLUDE1 = 1.
<UCM_S_MASSRVS_DOCUMENT_KEY>-DUMMY = 1.
<UCM_S_MASSRVS_DOCUMENT_KEY>-INCLUDE2 = 1.
<UCM_S_MASSRVS_DOCUMENT_KEY>-DUMMY = 1.
<UCM_S_MASSRVS_DOCUMENT_KEY>-INCLUDE3 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UCM_S_MASSRVS_DOCUMENT_KEY-DUMMY, sy-vline,
  WA_UCM_S_MASSRVS_DOCUMENT_KEY-INCLUDE4, sy-vline,
  WA_UCM_S_MASSRVS_DOCUMENT_KEY-DUMMY, sy-vline,
  WA_UCM_S_MASSRVS_DOCUMENT_KEY-INCLUDE5, sy-vline,
  WA_UCM_S_MASSRVS_DOCUMENT_KEY-DUMMY, sy-vline,
  WA_UCM_S_MASSRVS_DOCUMENT_KEY-INCLUDE6, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UCM_S_MASSRVS_DOCUMENT_KEY 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_UCM_S_MASSRVS_DOCUMENT_KEY 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_UCM_S_MASSRVS_DOCUMENT_KEY INTO WA_UCM_S_MASSRVS_DOCUMENT_KEY.


*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 ALPHA, internal->external for field DOCNR_HS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_UCM_S_MASSRVS_DOCUMENT_KEY-DOCNR_HS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UCM_S_MASSRVS_DOCUMENT_KEY-DOCNR_HS.
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_UCM_S_MASSRVS_DOCUMENT_KEY_STR, 
INCLUDE1 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE2 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE3 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE4 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE5 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE6 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE7 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE8 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE9 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE10 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE11 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE12 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE13 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE14 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE15 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE16 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE17 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE18 TYPE STRING,
DUMMY TYPE STRING,
INCLUDE19 TYPE STRING,
DUMMY TYPE STRING,
DOCNR_HS TYPE STRING,
WARNG TYPE STRING,
ERROR TYPE STRING,
RVS_LOGIC TYPE STRING,
RVS_STATUS TYPE STRING,
RVS_PROCESSED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UCM_S_MASSRVS_DOCUMENT_KEY_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_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE1 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE2 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE3 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE4 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE5 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE6 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE7 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE8 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE9 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE10 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE11 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE12 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE13 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE14 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE15 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE16 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE17 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE18 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-INCLUDE19 sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DUMMY sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-DOCNR_HS sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-WARNG sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-ERROR sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-RVS_LOGIC sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-RVS_STATUS sy-vline 
WA_UCM_S_MASSRVS_DOCUMENT_KEY_STR-RVS_PROCESSED sy-vline      INTO ld_text SEPARATED BY SPACE.

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