ABAP Select data from SAP table UCML000 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP UCML000 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 UCML000. 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 UCML000 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_UCML000 TYPE STANDARD TABLE OF UCML000,
      WA_UCML000 TYPE UCML000,
      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: <UCML000> TYPE UCML000.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_UCML000.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM UCML000
  INTO TABLE IT_UCML000.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UCML000
*  INTO TABLE @DATA(IT_UCML0002).
*--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_UCML000 INDEX 1 INTO DATA(WA_UCML0002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_UCML000 ASSIGNING <UCML000>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UCML000>-MANDT = 1.
<UCML000>-AREA = 1.
<UCML000>-UNAME = 1.
<UCML000>-MLAYOUT = 1.
<UCML000>-FIELDNAME_ROW = 1.

ENDLOOP.

LOOP AT IT_UCML000 INTO WA_UCML000.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UCML000-FIELDNAME_COL, sy-vline,
  WA_UCML000-FOCUS_NID, sy-vline,
  WA_UCML000-FOCUS_FLDNM_SID, sy-vline,
  WA_UCML000-FOCUS_VAL_SID, sy-vline,
  WA_UCML000-TEXT_FOR_ICONS, sy-vline,
  WA_UCML000-TEXT_HIDDEN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UCML000 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_UCML000 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_UCML000 INTO WA_UCML000.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_UCML000_STR, 
MANDT TYPE STRING,
AREA TYPE STRING,
UNAME TYPE STRING,
MLAYOUT TYPE STRING,
FIELDNAME_ROW TYPE STRING,
FIELDNAME_COL TYPE STRING,
FOCUS_NID TYPE STRING,
FOCUS_FLDNM_SID TYPE STRING,
FOCUS_VAL_SID TYPE STRING,
TEXT_FOR_ICONS TYPE STRING,
TEXT_HIDDEN TYPE STRING,
TEXT_WIDTH TYPE STRING,
HRY_WIDTH TYPE STRING,
TECN_FOR_TASK TYPE STRING,
TECN_FOR_UNIT TYPE STRING,
COLUMN_ALIGN TYPE STRING,
NAV_MODE TYPE STRING,
WD_MAX_ROWS TYPE STRING,
WD_MAX_COLS TYPE STRING,
WD_COL_OPTIMIZED TYPE STRING,
WD_COL_INCR TYPE STRING,
WD_GRID_LINES TYPE STRING,
WD_TEXT_TYPE TYPE STRING,
GWC_HIDDEN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UCML000_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_UCML000_STR-MANDT sy-vline 
WA_UCML000_STR-AREA sy-vline 
WA_UCML000_STR-UNAME sy-vline 
WA_UCML000_STR-MLAYOUT sy-vline 
WA_UCML000_STR-FIELDNAME_ROW sy-vline 
WA_UCML000_STR-FIELDNAME_COL sy-vline 
WA_UCML000_STR-FOCUS_NID sy-vline 
WA_UCML000_STR-FOCUS_FLDNM_SID sy-vline 
WA_UCML000_STR-FOCUS_VAL_SID sy-vline 
WA_UCML000_STR-TEXT_FOR_ICONS sy-vline 
WA_UCML000_STR-TEXT_HIDDEN sy-vline 
WA_UCML000_STR-TEXT_WIDTH sy-vline 
WA_UCML000_STR-HRY_WIDTH sy-vline 
WA_UCML000_STR-TECN_FOR_TASK sy-vline 
WA_UCML000_STR-TECN_FOR_UNIT sy-vline 
WA_UCML000_STR-COLUMN_ALIGN sy-vline 
WA_UCML000_STR-NAV_MODE sy-vline 
WA_UCML000_STR-WD_MAX_ROWS sy-vline 
WA_UCML000_STR-WD_MAX_COLS sy-vline 
WA_UCML000_STR-WD_COL_OPTIMIZED sy-vline 
WA_UCML000_STR-WD_COL_INCR sy-vline 
WA_UCML000_STR-WD_GRID_LINES sy-vline 
WA_UCML000_STR-WD_TEXT_TYPE sy-vline 
WA_UCML000_STR-GWC_HIDDEN sy-vline      INTO ld_text SEPARATED BY SPACE.

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