ABAP Select data from SAP table U_15444 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP U_15444 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_15444. 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_15444 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_15444 TYPE STANDARD TABLE OF U_15444,
      WA_U_15444 TYPE U_15444,
      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_15444> TYPE U_15444.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_15444.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_15444
  INTO TABLE IT_U_15444.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_15444
*  INTO TABLE @DATA(IT_U_154442).
*--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_15444 INDEX 1 INTO DATA(WA_U_154442).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_15444 ASSIGNING <U_15444>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_15444>-MANDT = 1.
<U_15444>-LGNUM = 1.
<U_15444>-BWLVS = 1.
<U_15444>-SPRAS = 1.
<U_15444>-TRART = 1.

ENDLOOP.

LOOP AT IT_U_15444 INTO WA_U_15444.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_15444-VLTYP, sy-vline,
  WA_U_15444-VLPLA, sy-vline,
  WA_U_15444-NLTYP, sy-vline,
  WA_U_15444-NLPLA, sy-vline,
  WA_U_15444-RLTYP, sy-vline,
  WA_U_15444-RLPLA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_15444 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_15444 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_15444 INTO WA_U_15444.


*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 SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_U_15444-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_15444-SPRAS.
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_15444_STR, 
MANDT TYPE STRING,
LGNUM TYPE STRING,
BWLVS TYPE STRING,
SPRAS TYPE STRING,
TRART TYPE STRING,
VLTYP TYPE STRING,
VLPLA TYPE STRING,
NLTYP TYPE STRING,
NLPLA TYPE STRING,
RLTYP TYPE STRING,
RLPLA TYPE STRING,
BETYP TYPE STRING,
TBOBL TYPE STRING,
DRUKZ TYPE STRING,
SQUIT TYPE STRING,
TBMAN TYPE STRING,
DUNKL TYPE STRING,
VQUIT TYPE STRING,
TBPRI TYPE STRING,
WEDAT TYPE STRING,
LPMAN TYPE STRING,
VKDYN TYPE STRING,
NKDYN TYPE STRING,
ABILD TYPE STRING,
FEHLT TYPE STRING,
VFIXP TYPE STRING,
NFIXP TYPE STRING,
KZUAP TYPE STRING,
BWREF TYPE STRING,
UELIE TYPE STRING,
AUTTA TYPE STRING,
ZUSTE TYPE STRING,
CHSWM TYPE STRING,
LBWAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_15444_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_15444_STR-MANDT sy-vline 
WA_U_15444_STR-LGNUM sy-vline 
WA_U_15444_STR-BWLVS sy-vline 
WA_U_15444_STR-SPRAS sy-vline 
WA_U_15444_STR-TRART sy-vline 
WA_U_15444_STR-VLTYP sy-vline 
WA_U_15444_STR-VLPLA sy-vline 
WA_U_15444_STR-NLTYP sy-vline 
WA_U_15444_STR-NLPLA sy-vline 
WA_U_15444_STR-RLTYP sy-vline 
WA_U_15444_STR-RLPLA sy-vline 
WA_U_15444_STR-BETYP sy-vline 
WA_U_15444_STR-TBOBL sy-vline 
WA_U_15444_STR-DRUKZ sy-vline 
WA_U_15444_STR-SQUIT sy-vline 
WA_U_15444_STR-TBMAN sy-vline 
WA_U_15444_STR-DUNKL sy-vline 
WA_U_15444_STR-VQUIT sy-vline 
WA_U_15444_STR-TBPRI sy-vline 
WA_U_15444_STR-WEDAT sy-vline 
WA_U_15444_STR-LPMAN sy-vline 
WA_U_15444_STR-VKDYN sy-vline 
WA_U_15444_STR-NKDYN sy-vline 
WA_U_15444_STR-ABILD sy-vline 
WA_U_15444_STR-FEHLT sy-vline 
WA_U_15444_STR-VFIXP sy-vline 
WA_U_15444_STR-NFIXP sy-vline 
WA_U_15444_STR-KZUAP sy-vline 
WA_U_15444_STR-BWREF sy-vline 
WA_U_15444_STR-UELIE sy-vline 
WA_U_15444_STR-AUTTA sy-vline 
WA_U_15444_STR-ZUSTE sy-vline 
WA_U_15444_STR-CHSWM sy-vline 
WA_U_15444_STR-LBWAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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