ABAP Select data from SAP table U_25801 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP U_25801 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_25801. 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_25801 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_25801 TYPE STANDARD TABLE OF U_25801,
      WA_U_25801 TYPE U_25801,
      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_25801> TYPE U_25801.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_25801.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_25801
  INTO TABLE IT_U_25801.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_25801
*  INTO TABLE @DATA(IT_U_258012).
*--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_25801 INDEX 1 INTO DATA(WA_U_258012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_25801 ASSIGNING <U_25801>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_25801>-MANDT = 1.
<U_25801>-VBELN = 1.
<U_25801>-POSNR = 1.
<U_25801>-MATNR = 1.
<U_25801>-ARKTX = 1.

ENDLOOP.

LOOP AT IT_U_25801 INTO WA_U_25801.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_25801-PSTYV, sy-vline,
  WA_U_25801-ZIEME, sy-vline,
  WA_U_25801-UMZIZ, sy-vline,
  WA_U_25801-UMZIN, sy-vline,
  WA_U_25801-MEINS, sy-vline,
  WA_U_25801-WAERK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_25801 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_25801 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_25801 INTO WA_U_25801.


*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 VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_25801-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_25801-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_U_25801-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_25801-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ZIEME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_U_25801-ZIEME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_25801-ZIEME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_U_25801-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_25801-MEINS.
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_25801_STR, 
MANDT TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
MATNR TYPE STRING,
ARKTX TYPE STRING,
PSTYV TYPE STRING,
ZIEME TYPE STRING,
UMZIZ TYPE STRING,
UMZIN TYPE STRING,
MEINS TYPE STRING,
WAERK TYPE STRING,
ANTLF TYPE STRING,
KWMENG TYPE STRING,
KBMENG TYPE STRING,
KLMENG TYPE STRING,
WERKS TYPE STRING,
AWAHR TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
ERZET TYPE STRING,
SUMBD TYPE STRING,
AEDAT TYPE STRING,
SERNR TYPE STRING,
BEDAE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_25801_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_25801_STR-MANDT sy-vline 
WA_U_25801_STR-VBELN sy-vline 
WA_U_25801_STR-POSNR sy-vline 
WA_U_25801_STR-MATNR sy-vline 
WA_U_25801_STR-ARKTX sy-vline 
WA_U_25801_STR-PSTYV sy-vline 
WA_U_25801_STR-ZIEME sy-vline 
WA_U_25801_STR-UMZIZ sy-vline 
WA_U_25801_STR-UMZIN sy-vline 
WA_U_25801_STR-MEINS sy-vline 
WA_U_25801_STR-WAERK sy-vline 
WA_U_25801_STR-ANTLF sy-vline 
WA_U_25801_STR-KWMENG sy-vline 
WA_U_25801_STR-KBMENG sy-vline 
WA_U_25801_STR-KLMENG sy-vline 
WA_U_25801_STR-WERKS sy-vline 
WA_U_25801_STR-AWAHR sy-vline 
WA_U_25801_STR-ERDAT sy-vline 
WA_U_25801_STR-ERNAM sy-vline 
WA_U_25801_STR-ERZET sy-vline 
WA_U_25801_STR-SUMBD sy-vline 
WA_U_25801_STR-AEDAT sy-vline 
WA_U_25801_STR-SERNR sy-vline 
WA_U_25801_STR-BEDAE sy-vline      INTO ld_text SEPARATED BY SPACE.

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