ABAP Select data from SAP table UGMD2040 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP UGMD2040 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 UGMD2040. 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 UGMD2040 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_UGMD2040 TYPE STANDARD TABLE OF UGMD2040,
      WA_UGMD2040 TYPE UGMD2040,
      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: <UGMD2040> TYPE UGMD2040.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_UGMD2040.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM UGMD2040
  INTO TABLE IT_UGMD2040.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UGMD2040
*  INTO TABLE @DATA(IT_UGMD20402).
*--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_UGMD2040 INDEX 1 INTO DATA(WA_UGMD20402).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_UGMD2040 ASSIGNING <UGMD2040>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UGMD2040>-MANDT = 1.
<UGMD2040>-RFCDEST = 1.
<UGMD2040>-INFOOBJECT = 1.
<UGMD2040>-TIMESTMP = 1.
<UGMD2040>-TYPE = 1.

ENDLOOP.

LOOP AT IT_UGMD2040 INTO WA_UGMD2040.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UGMD2040-TEXTSHORT, sy-vline,
  WA_UGMD2040-TEXTLONG, sy-vline,
  WA_UGMD2040-CHABASNM, sy-vline,
  WA_UGMD2040-NOVALFL, sy-vline,
  WA_UGMD2040-TIMDEPFL, sy-vline,
  WA_UGMD2040-NOLANGU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UGMD2040 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_UGMD2040 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_UGMD2040 INTO WA_UGMD2040.


*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 DTYPE, internal->external for field DATATP
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_UGMD2040-DATATP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UGMD2040-DATATP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field FIXUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_UGMD2040-FIXUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UGMD2040-FIXUNIT.
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_UGMD2040_STR, 
MANDT TYPE STRING,
RFCDEST TYPE STRING,
INFOOBJECT TYPE STRING,
TIMESTMP TYPE STRING,
TYPE TYPE STRING,
TEXTSHORT TYPE STRING,
TEXTLONG TYPE STRING,
CHABASNM TYPE STRING,
NOVALFL TYPE STRING,
TIMDEPFL TYPE STRING,
NOLANGU TYPE STRING,
TXTSHFL TYPE STRING,
TXTMDFL TYPE STRING,
TXTLGFL TYPE STRING,
HIETABFL TYPE STRING,
HIEVERFL TYPE STRING,
HIENMTFL TYPE STRING,
HIENDTFL TYPE STRING,
DATATP TYPE STRING,
INTLEN TYPE STRING,
CONVEXIT TYPE STRING,
FVALEX TYPE STRING,
LOWERCASE TYPE STRING,
KYFTP TYPE STRING,
FIXCUKY TYPE STRING,
FIXUNIT TYPE STRING,
DECIMALS TYPE STRING,
UNINM TYPE STRING,
TXTTIMFL TYPE STRING,
TXTTABFL TYPE STRING,
OUTPUTLEN TYPE STRING,
ATRONLYFL TYPE STRING,
CHNTAB TYPE STRING,
CHTTAB TYPE STRING,
TXTTAB TYPE STRING,
AGGRGEN TYPE STRING,
AGGREXC TYPE STRING,
AGGRCHA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UGMD2040_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_UGMD2040_STR-MANDT sy-vline 
WA_UGMD2040_STR-RFCDEST sy-vline 
WA_UGMD2040_STR-INFOOBJECT sy-vline 
WA_UGMD2040_STR-TIMESTMP sy-vline 
WA_UGMD2040_STR-TYPE sy-vline 
WA_UGMD2040_STR-TEXTSHORT sy-vline 
WA_UGMD2040_STR-TEXTLONG sy-vline 
WA_UGMD2040_STR-CHABASNM sy-vline 
WA_UGMD2040_STR-NOVALFL sy-vline 
WA_UGMD2040_STR-TIMDEPFL sy-vline 
WA_UGMD2040_STR-NOLANGU sy-vline 
WA_UGMD2040_STR-TXTSHFL sy-vline 
WA_UGMD2040_STR-TXTMDFL sy-vline 
WA_UGMD2040_STR-TXTLGFL sy-vline 
WA_UGMD2040_STR-HIETABFL sy-vline 
WA_UGMD2040_STR-HIEVERFL sy-vline 
WA_UGMD2040_STR-HIENMTFL sy-vline 
WA_UGMD2040_STR-HIENDTFL sy-vline 
WA_UGMD2040_STR-DATATP sy-vline 
WA_UGMD2040_STR-INTLEN sy-vline 
WA_UGMD2040_STR-CONVEXIT sy-vline 
WA_UGMD2040_STR-FVALEX sy-vline 
WA_UGMD2040_STR-LOWERCASE sy-vline 
WA_UGMD2040_STR-KYFTP sy-vline 
WA_UGMD2040_STR-FIXCUKY sy-vline 
WA_UGMD2040_STR-FIXUNIT sy-vline 
WA_UGMD2040_STR-DECIMALS sy-vline 
WA_UGMD2040_STR-UNINM sy-vline 
WA_UGMD2040_STR-TXTTIMFL sy-vline 
WA_UGMD2040_STR-TXTTABFL sy-vline 
WA_UGMD2040_STR-OUTPUTLEN sy-vline 
WA_UGMD2040_STR-ATRONLYFL sy-vline 
WA_UGMD2040_STR-CHNTAB sy-vline 
WA_UGMD2040_STR-CHTTAB sy-vline 
WA_UGMD2040_STR-TXTTAB sy-vline 
WA_UGMD2040_STR-AGGRGEN sy-vline 
WA_UGMD2040_STR-AGGREXC sy-vline 
WA_UGMD2040_STR-AGGRCHA sy-vline      INTO ld_text SEPARATED BY SPACE.

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