ABAP Select data from SAP table U_27341 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP U_27341 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_27341. 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_27341 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_27341 TYPE STANDARD TABLE OF U_27341,
      WA_U_27341 TYPE U_27341,
      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_27341> TYPE U_27341.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_27341.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_27341
  INTO TABLE IT_U_27341.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_27341
*  INTO TABLE @DATA(IT_U_273412).
*--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_27341 INDEX 1 INTO DATA(WA_U_273412).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_27341 ASSIGNING <U_27341>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_27341>-MANDT = 1.
<U_27341>-PDSNR = 1.
<U_27341>-PERNR = 1.
<U_27341>-INFTY = 1.
<U_27341>-SUBTY = 1.

ENDLOOP.

LOOP AT IT_U_27341 INTO WA_U_27341.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_27341-OBJPS, sy-vline,
  WA_U_27341-SPRPS, sy-vline,
  WA_U_27341-ENDDA, sy-vline,
  WA_U_27341-BEGDA, sy-vline,
  WA_U_27341-SEQNR, sy-vline,
  WA_U_27341-BUKRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_27341 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_27341 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_27341 INTO WA_U_27341.


*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 KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_27341-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_27341-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_27341-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_27341-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field POSNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_U_27341-POSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_27341-POSNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NPLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_27341-NPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_27341-NPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_U_27341-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_27341-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_27341-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_27341-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRZNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_27341-PRZNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_27341-PRZNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SKOST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_U_27341-SKOST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_27341-SKOST.
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_27341_STR, 
MANDT TYPE STRING,
PDSNR TYPE STRING,
PERNR TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
SPRPS TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SEQNR TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
KSTRG TYPE STRING,
POSNR TYPE STRING,
NPLNR TYPE STRING,
VORNR TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PAOBJNR TYPE STRING,
PRZNR TYPE STRING,
SBUKR TYPE STRING,
SGSBR TYPE STRING,
SKOST TYPE STRING,
LSTAR TYPE STRING,
SGTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_27341_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_27341_STR-MANDT sy-vline 
WA_U_27341_STR-PDSNR sy-vline 
WA_U_27341_STR-PERNR sy-vline 
WA_U_27341_STR-INFTY sy-vline 
WA_U_27341_STR-SUBTY sy-vline 
WA_U_27341_STR-OBJPS sy-vline 
WA_U_27341_STR-SPRPS sy-vline 
WA_U_27341_STR-ENDDA sy-vline 
WA_U_27341_STR-BEGDA sy-vline 
WA_U_27341_STR-SEQNR sy-vline 
WA_U_27341_STR-BUKRS sy-vline 
WA_U_27341_STR-GSBER sy-vline 
WA_U_27341_STR-KOKRS sy-vline 
WA_U_27341_STR-KOSTL sy-vline 
WA_U_27341_STR-AUFNR sy-vline 
WA_U_27341_STR-KSTRG sy-vline 
WA_U_27341_STR-POSNR sy-vline 
WA_U_27341_STR-NPLNR sy-vline 
WA_U_27341_STR-VORNR sy-vline 
WA_U_27341_STR-KDAUF sy-vline 
WA_U_27341_STR-KDPOS sy-vline 
WA_U_27341_STR-PAOBJNR sy-vline 
WA_U_27341_STR-PRZNR sy-vline 
WA_U_27341_STR-SBUKR sy-vline 
WA_U_27341_STR-SGSBR sy-vline 
WA_U_27341_STR-SKOST sy-vline 
WA_U_27341_STR-LSTAR sy-vline 
WA_U_27341_STR-SGTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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