ABAP Select data from SAP table UGMD2150 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP UGMD2150 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 UGMD2150. 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 UGMD2150 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_UGMD2150 TYPE STANDARD TABLE OF UGMD2150,
      WA_UGMD2150 TYPE UGMD2150,
      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: <UGMD2150> TYPE UGMD2150.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_UGMD2150.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM UGMD2150
  INTO TABLE IT_UGMD2150.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UGMD2150
*  INTO TABLE @DATA(IT_UGMD21502).
*--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_UGMD2150 INDEX 1 INTO DATA(WA_UGMD21502).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_UGMD2150 ASSIGNING <UGMD2150>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UGMD2150>-MANDT = 1.
<UGMD2150>-FIELDNAME = 1.
<UGMD2150>-TIMESTMP = 1.
<UGMD2150>-TYPE = 1.
<UGMD2150>-BASE_FLD = 1.

ENDLOOP.

LOOP AT IT_UGMD2150 INTO WA_UGMD2150.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UGMD2150-UNIT_FNAME, sy-vline,
  WA_UGMD2150-HAS_TEXTTABLE, sy-vline,
  WA_UGMD2150-HAS_CHECKTABLE, sy-vline,
  WA_UGMD2150-HAS_FIXVAL, sy-vline,
  WA_UGMD2150-HAS_HIERARCHY, sy-vline,
  WA_UGMD2150-INTLEN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UGMD2150 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_UGMD2150 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_UGMD2150 INTO WA_UGMD2150.


*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 DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_UGMD2150-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UGMD2150-DATATYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field FIXUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_UGMD2150-FIXUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UGMD2150-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_UGMD2150_STR, 
MANDT TYPE STRING,
FIELDNAME TYPE STRING,
TIMESTMP TYPE STRING,
TYPE TYPE STRING,
BASE_FLD TYPE STRING,
UNIT_FNAME TYPE STRING,
HAS_TEXTTABLE TYPE STRING,
HAS_CHECKTABLE TYPE STRING,
HAS_FIXVAL TYPE STRING,
HAS_HIERARCHY TYPE STRING,
INTLEN TYPE STRING,
INTTYPE TYPE STRING,
DECIMALS TYPE STRING,
DATATYPE TYPE STRING,
LENG TYPE STRING,
ROLLNAME TYPE STRING,
OUTPUTLEN TYPE STRING,
ORIGIN TYPE STRING,
ATRONLYFL TYPE STRING,
CONVEXIT TYPE STRING,
HAS_TXTSH TYPE STRING,
HAS_TXTMI TYPE STRING,
HAS_TXTLG TYPE STRING,
TIMDEPFL TYPE STRING,
HAS_TEXTTAB TYPE STRING,
HAS_CHECKTAB TYPE STRING,
CHNTAB TYPE STRING,
CHTTAB TYPE STRING,
TXTTAB TYPE STRING,
TEXT_TIMEDEP TYPE STRING,
LOWERCASE TYPE STRING,
NOLANGU TYPE STRING,
FIXCUKY TYPE STRING,
FIXUNIT TYPE STRING,
AGGRGEN TYPE STRING,
AGGREXC TYPE STRING,
AGGRCHA TYPE STRING,
KYFTP TYPE STRING,
UNIQUE_INDEPFLD TYPE STRING,
ONLY_ONE_HRYNAME TYPE STRING,
ONLY_ONE_ROOT TYPE STRING,
DEPENDENT_HRYNM TYPE STRING,
EDGE_VERSION_DEP TYPE STRING,
EDGE_TIME_DEP TYPE STRING,
LINKED_FIELD TYPE STRING,
IMPLEDGE_ATTR TYPE STRING,
IS_DOC_ATTR TYPE STRING,
CHATP TYPE STRING,
TIMESTAMP TYPE STRING,
UNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UGMD2150_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_UGMD2150_STR-MANDT sy-vline 
WA_UGMD2150_STR-FIELDNAME sy-vline 
WA_UGMD2150_STR-TIMESTMP sy-vline 
WA_UGMD2150_STR-TYPE sy-vline 
WA_UGMD2150_STR-BASE_FLD sy-vline 
WA_UGMD2150_STR-UNIT_FNAME sy-vline 
WA_UGMD2150_STR-HAS_TEXTTABLE sy-vline 
WA_UGMD2150_STR-HAS_CHECKTABLE sy-vline 
WA_UGMD2150_STR-HAS_FIXVAL sy-vline 
WA_UGMD2150_STR-HAS_HIERARCHY sy-vline 
WA_UGMD2150_STR-INTLEN sy-vline 
WA_UGMD2150_STR-INTTYPE sy-vline 
WA_UGMD2150_STR-DECIMALS sy-vline 
WA_UGMD2150_STR-DATATYPE sy-vline 
WA_UGMD2150_STR-LENG sy-vline 
WA_UGMD2150_STR-ROLLNAME sy-vline 
WA_UGMD2150_STR-OUTPUTLEN sy-vline 
WA_UGMD2150_STR-ORIGIN sy-vline 
WA_UGMD2150_STR-ATRONLYFL sy-vline 
WA_UGMD2150_STR-CONVEXIT sy-vline 
WA_UGMD2150_STR-HAS_TXTSH sy-vline 
WA_UGMD2150_STR-HAS_TXTMI sy-vline 
WA_UGMD2150_STR-HAS_TXTLG sy-vline 
WA_UGMD2150_STR-TIMDEPFL sy-vline 
WA_UGMD2150_STR-HAS_TEXTTAB sy-vline 
WA_UGMD2150_STR-HAS_CHECKTAB sy-vline 
WA_UGMD2150_STR-CHNTAB sy-vline 
WA_UGMD2150_STR-CHTTAB sy-vline 
WA_UGMD2150_STR-TXTTAB sy-vline 
WA_UGMD2150_STR-TEXT_TIMEDEP sy-vline 
WA_UGMD2150_STR-LOWERCASE sy-vline 
WA_UGMD2150_STR-NOLANGU sy-vline 
WA_UGMD2150_STR-FIXCUKY sy-vline 
WA_UGMD2150_STR-FIXUNIT sy-vline 
WA_UGMD2150_STR-AGGRGEN sy-vline 
WA_UGMD2150_STR-AGGREXC sy-vline 
WA_UGMD2150_STR-AGGRCHA sy-vline 
WA_UGMD2150_STR-KYFTP sy-vline 
WA_UGMD2150_STR-UNIQUE_INDEPFLD sy-vline 
WA_UGMD2150_STR-ONLY_ONE_HRYNAME sy-vline 
WA_UGMD2150_STR-ONLY_ONE_ROOT sy-vline 
WA_UGMD2150_STR-DEPENDENT_HRYNM sy-vline 
WA_UGMD2150_STR-EDGE_VERSION_DEP sy-vline 
WA_UGMD2150_STR-EDGE_TIME_DEP sy-vline 
WA_UGMD2150_STR-LINKED_FIELD sy-vline 
WA_UGMD2150_STR-IMPLEDGE_ATTR sy-vline 
WA_UGMD2150_STR-IS_DOC_ATTR sy-vline 
WA_UGMD2150_STR-CHATP sy-vline 
WA_UGMD2150_STR-TIMESTAMP sy-vline 
WA_UGMD2150_STR-UNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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