ABAP Select data from SAP table UMM_BU101 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP UMM_BU101 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 UMM_BU101. 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 UMM_BU101 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_UMM_BU101 TYPE STANDARD TABLE OF UMM_BU101,
      WA_UMM_BU101 TYPE UMM_BU101,
      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: <UMM_BU101> TYPE UMM_BU101.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_UMM_BU101.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM UMM_BU101
  INTO TABLE IT_UMM_BU101.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UMM_BU101
*  INTO TABLE @DATA(IT_UMM_BU1012).
*--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_UMM_BU101 INDEX 1 INTO DATA(WA_UMM_BU1012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_UMM_BU101 ASSIGNING <UMM_BU101>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UMM_BU101>-MANDT = 1.
<UMM_BU101>-CONAME = 1.
<UMM_BU101>-CASENO = 1.
<UMM_BU101>-PERIOD = 1.
<UMM_BU101>-WANO = 1.

ENDLOOP.

LOOP AT IT_UMM_BU101 INTO WA_UMM_BU101.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UMM_BU101-LVNO, sy-vline,
  WA_UMM_BU101-FRNO, sy-vline,
  WA_UMM_BU101-SELVAR, sy-vline,
  WA_UMM_BU101-COUNTER, sy-vline,
  WA_UMM_BU101-TKFNM, sy-vline,
  WA_UMM_BU101-YTD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UMM_BU101 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_UMM_BU101 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_UMM_BU101 INTO WA_UMM_BU101.


*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 PERI7, internal->external for field PERIOD
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_UMM_BU101-PERIOD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UMM_BU101-PERIOD.
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_UMM_BU101_STR, 
MANDT TYPE STRING,
CONAME TYPE STRING,
CASENO TYPE STRING,
PERIOD TYPE STRING,
WANO TYPE STRING,
LVNO TYPE STRING,
FRNO TYPE STRING,
SELVAR TYPE STRING,
COUNTER TYPE STRING,
TKFNM TYPE STRING,
YTD TYPE STRING,
YTD_PERIODICITY TYPE STRING,
ORDINAL TYPE STRING,
VALUE TYPE STRING,
FORM_VALUE TYPE STRING,
UNIT TYPE STRING,
FORM_UNIT TYPE STRING,
BW_EXCEPTION TYPE STRING,
ERRIND TYPE STRING,
VALTYPE TYPE STRING,
MEASDEC TYPE STRING,
MEASSCALE TYPE STRING,
SIGNREV TYPE STRING,
TCHANM TYPE STRING,
TCHAVAL TYPE STRING,
TIMESTMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UMM_BU101_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_UMM_BU101_STR-MANDT sy-vline 
WA_UMM_BU101_STR-CONAME sy-vline 
WA_UMM_BU101_STR-CASENO sy-vline 
WA_UMM_BU101_STR-PERIOD sy-vline 
WA_UMM_BU101_STR-WANO sy-vline 
WA_UMM_BU101_STR-LVNO sy-vline 
WA_UMM_BU101_STR-FRNO sy-vline 
WA_UMM_BU101_STR-SELVAR sy-vline 
WA_UMM_BU101_STR-COUNTER sy-vline 
WA_UMM_BU101_STR-TKFNM sy-vline 
WA_UMM_BU101_STR-YTD sy-vline 
WA_UMM_BU101_STR-YTD_PERIODICITY sy-vline 
WA_UMM_BU101_STR-ORDINAL sy-vline 
WA_UMM_BU101_STR-VALUE sy-vline 
WA_UMM_BU101_STR-FORM_VALUE sy-vline 
WA_UMM_BU101_STR-UNIT sy-vline 
WA_UMM_BU101_STR-FORM_UNIT sy-vline 
WA_UMM_BU101_STR-BW_EXCEPTION sy-vline 
WA_UMM_BU101_STR-ERRIND sy-vline 
WA_UMM_BU101_STR-VALTYPE sy-vline 
WA_UMM_BU101_STR-MEASDEC sy-vline 
WA_UMM_BU101_STR-MEASSCALE sy-vline 
WA_UMM_BU101_STR-SIGNREV sy-vline 
WA_UMM_BU101_STR-TCHANM sy-vline 
WA_UMM_BU101_STR-TCHAVAL sy-vline 
WA_UMM_BU101_STR-TIMESTMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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