ABAP Select data from SAP table USMDA_S_BDCBDCSEL_ATTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM USMDA_S_BDCBDCSEL_ATTR
*  INTO TABLE @DATA(IT_USMDA_S_BDCBDCSEL_ATTR2).
*--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_USMDA_S_BDCBDCSEL_ATTR INDEX 1 INTO DATA(WA_USMDA_S_BDCBDCSEL_ATTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<USMDA_S_BDCBDCSEL_ATTR>-SUBASSIGN = 1.
<USMDA_S_BDCBDCSEL_ATTR>-BDC = 1.
<USMDA_S_BDCBDCSEL_ATTR>-CCOA = 1.
<USMDA_S_BDCBDCSEL_ATTR>-DATETO = 1.
<USMDA_S_BDCBDCSEL_ATTR>-DATEFROM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_USMDA_S_BDCBDCSEL_ATTR-USMD_EDITION, sy-vline,
  WA_USMDA_S_BDCBDCSEL_ATTR-USMD_RELEASED_AT, sy-vline,
  WA_USMDA_S_BDCBDCSEL_ATTR-SETBDCDEF, sy-vline,
  WA_USMDA_S_BDCBDCSEL_ATTR-SETBDCMAX, sy-vline,
  WA_USMDA_S_BDCBDCSEL_ATTR-SUBBDTYPE, sy-vline,
  WA_USMDA_S_BDCBDCSEL_ATTR-SUBFIXVAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_USMDA_S_BDCBDCSEL_ATTR 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_USMDA_S_BDCBDCSEL_ATTR 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_USMDA_S_BDCBDCSEL_ATTR INTO WA_USMDA_S_BDCBDCSEL_ATTR.


*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 SUBASSIGN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_USMDA_S_BDCBDCSEL_ATTR-SUBASSIGN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USMDA_S_BDCBDCSEL_ATTR-SUBASSIGN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BDC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_USMDA_S_BDCBDCSEL_ATTR-BDC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USMDA_S_BDCBDCSEL_ATTR-BDC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field USMD_EDITION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_USMDA_S_BDCBDCSEL_ATTR-USMD_EDITION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USMDA_S_BDCBDCSEL_ATTR-USMD_EDITION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SETBDCDEF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_USMDA_S_BDCBDCSEL_ATTR-SETBDCDEF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USMDA_S_BDCBDCSEL_ATTR-SETBDCDEF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SETBDCMAX
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_USMDA_S_BDCBDCSEL_ATTR-SETBDCMAX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_USMDA_S_BDCBDCSEL_ATTR-SETBDCMAX.
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_USMDA_S_BDCBDCSEL_ATTR_STR, 
SUBASSIGN TYPE STRING,
BDC TYPE STRING,
CCOA TYPE STRING,
DATETO TYPE STRING,
DATEFROM TYPE STRING,
USMD_EDITION TYPE STRING,
USMD_RELEASED_AT TYPE STRING,
SETBDCDEF TYPE STRING,
SETBDCMAX TYPE STRING,
SUBBDTYPE TYPE STRING,
SUBFIXVAL TYPE STRING,
COA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_USMDA_S_BDCBDCSEL_ATTR_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_USMDA_S_BDCBDCSEL_ATTR_STR-SUBASSIGN sy-vline 
WA_USMDA_S_BDCBDCSEL_ATTR_STR-BDC sy-vline 
WA_USMDA_S_BDCBDCSEL_ATTR_STR-CCOA sy-vline 
WA_USMDA_S_BDCBDCSEL_ATTR_STR-DATETO sy-vline 
WA_USMDA_S_BDCBDCSEL_ATTR_STR-DATEFROM sy-vline 
WA_USMDA_S_BDCBDCSEL_ATTR_STR-USMD_EDITION sy-vline 
WA_USMDA_S_BDCBDCSEL_ATTR_STR-USMD_RELEASED_AT sy-vline 
WA_USMDA_S_BDCBDCSEL_ATTR_STR-SETBDCDEF sy-vline 
WA_USMDA_S_BDCBDCSEL_ATTR_STR-SETBDCMAX sy-vline 
WA_USMDA_S_BDCBDCSEL_ATTR_STR-SUBBDTYPE sy-vline 
WA_USMDA_S_BDCBDCSEL_ATTR_STR-SUBFIXVAL sy-vline 
WA_USMDA_S_BDCBDCSEL_ATTR_STR-COA sy-vline      INTO ld_text SEPARATED BY SPACE.

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