ABAP Select data from SAP table U_27427 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP U_27427 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 U_27427. 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 U_27427 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_U_27427 TYPE STANDARD TABLE OF U_27427,
      WA_U_27427 TYPE U_27427,
      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: <U_27427> TYPE U_27427.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_27427.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_27427
  INTO TABLE IT_U_27427.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_27427
*  INTO TABLE @DATA(IT_U_274272).
*--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_U_27427 INDEX 1 INTO DATA(WA_U_274272).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_27427 ASSIGNING <U_27427>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_27427>-MANDT = 1.
<U_27427>-CAREA = 1.
<U_27427>-MATRIX = 1.
<U_27427>-ENDDA = 1.
<U_27427>-CURCY = 1.

ENDLOOP.

LOOP AT IT_U_27427 INTO WA_U_27427.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_27427-UNIT, sy-vline,
  WA_U_27427-DAMTI, sy-vline,
  WA_U_27427-LAMTI, sy-vline,
  WA_U_27427-HAMTI, sy-vline,
  WA_U_27427-EAMTI, sy-vline,
  WA_U_27427-DPRCI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_27427 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_U_27427 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_U_27427 INTO WA_U_27427.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_U_27427-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_27427-LANGU.
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_U_27427_STR, 
MANDT TYPE STRING,
CAREA TYPE STRING,
MATRIX TYPE STRING,
ENDDA TYPE STRING,
CURCY TYPE STRING,
UNIT TYPE STRING,
DAMTI TYPE STRING,
LAMTI TYPE STRING,
HAMTI TYPE STRING,
EAMTI TYPE STRING,
DPRCI TYPE STRING,
LPRCI TYPE STRING,
HPRCI TYPE STRING,
EPRCI TYPE STRING,
DNUMI TYPE STRING,
LNUMI TYPE STRING,
HNUMI TYPE STRING,
ENUMI TYPE STRING,
LANGU TYPE STRING,
STEXT TYPE STRING,
LTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_27427_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_U_27427_STR-MANDT sy-vline 
WA_U_27427_STR-CAREA sy-vline 
WA_U_27427_STR-MATRIX sy-vline 
WA_U_27427_STR-ENDDA sy-vline 
WA_U_27427_STR-CURCY sy-vline 
WA_U_27427_STR-UNIT sy-vline 
WA_U_27427_STR-DAMTI sy-vline 
WA_U_27427_STR-LAMTI sy-vline 
WA_U_27427_STR-HAMTI sy-vline 
WA_U_27427_STR-EAMTI sy-vline 
WA_U_27427_STR-DPRCI sy-vline 
WA_U_27427_STR-LPRCI sy-vline 
WA_U_27427_STR-HPRCI sy-vline 
WA_U_27427_STR-EPRCI sy-vline 
WA_U_27427_STR-DNUMI sy-vline 
WA_U_27427_STR-LNUMI sy-vline 
WA_U_27427_STR-HNUMI sy-vline 
WA_U_27427_STR-ENUMI sy-vline 
WA_U_27427_STR-LANGU sy-vline 
WA_U_27427_STR-STEXT sy-vline 
WA_U_27427_STR-LTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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