ABAP Select data from SAP table J_1UF_INV_REF_L into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_1UF_INV_REF_L 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 J_1UF_INV_REF_L. 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 J_1UF_INV_REF_L 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_J_1UF_INV_REF_L TYPE STANDARD TABLE OF J_1UF_INV_REF_L,
      WA_J_1UF_INV_REF_L TYPE J_1UF_INV_REF_L,
      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: <J_1UF_INV_REF_L> TYPE J_1UF_INV_REF_L.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_1UF_INV_REF_L.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_1UF_INV_REF_L
  INTO TABLE IT_J_1UF_INV_REF_L.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_1UF_INV_REF_L
*  INTO TABLE @DATA(IT_J_1UF_INV_REF_L2).
*--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_J_1UF_INV_REF_L INDEX 1 INTO DATA(WA_J_1UF_INV_REF_L2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_1UF_INV_REF_L ASSIGNING <J_1UF_INV_REF_L>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_1UF_INV_REF_L>-MANDT = 1.
<J_1UF_INV_REF_L>-REF_BUKRS = 1.
<J_1UF_INV_REF_L>-REF_BELNR = 1.
<J_1UF_INV_REF_L>-REF_GJAHR = 1.
<J_1UF_INV_REF_L>-INV_BELNR = 1.

ENDLOOP.

LOOP AT IT_J_1UF_INV_REF_L INTO WA_J_1UF_INV_REF_L.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_1UF_INV_REF_L-INV_GJAHR, sy-vline,
  WA_J_1UF_INV_REF_L-INV_BUZEI_LONG, sy-vline,
  WA_J_1UF_INV_REF_L-FL_ORIGINAL, sy-vline,
  WA_J_1UF_INV_REF_L-MATNR, sy-vline,
  WA_J_1UF_INV_REF_L-MEINS, sy-vline,
  WA_J_1UF_INV_REF_L-MENGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_1UF_INV_REF_L 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_J_1UF_INV_REF_L 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_J_1UF_INV_REF_L INTO WA_J_1UF_INV_REF_L.


*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 REF_BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_INV_REF_L-REF_BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_INV_REF_L-REF_BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field REF_GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_INV_REF_L-REF_GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_INV_REF_L-REF_GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INV_BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_INV_REF_L-INV_BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_INV_REF_L-INV_BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field INV_GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_INV_REF_L-INV_GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_INV_REF_L-INV_GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_INV_REF_L-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_INV_REF_L-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_INV_REF_L-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_INV_REF_L-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATWA
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_INV_REF_L-MATWA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_INV_REF_L-MATWA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORDNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_INV_REF_L-ORDNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_INV_REF_L-ORDNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_INV_REF_L-DMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_INV_REF_L-DMBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field MWSTS
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_INV_REF_L-MWSTS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_INV_REF_L-MWSTS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_INV_REF_L-WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_INV_REF_L-WRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WMWST
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_1UF_INV_REF_L-WMWST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1UF_INV_REF_L-WMWST.
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_J_1UF_INV_REF_L_STR, 
MANDT TYPE STRING,
REF_BUKRS TYPE STRING,
REF_BELNR TYPE STRING,
REF_GJAHR TYPE STRING,
INV_BELNR TYPE STRING,
INV_GJAHR TYPE STRING,
INV_BUZEI_LONG TYPE STRING,
FL_ORIGINAL TYPE STRING,
MATNR TYPE STRING,
MEINS TYPE STRING,
MENGE TYPE STRING,
NPREI TYPE STRING,
MATWA TYPE STRING,
MWSKZ TYPE STRING,
ZMWSK TYPE STRING,
CMWSK TYPE STRING,
KBETR TYPE STRING,
SGTXT TYPE STRING,
XREF1 TYPE STRING,
XREF2 TYPE STRING,
ORDNUM TYPE STRING,
ORDPOS TYPE STRING,
DMBTR TYPE STRING,
MWSTS TYPE STRING,
HWAER TYPE STRING,
WRBTR TYPE STRING,
WMWST TYPE STRING,
WAERS TYPE STRING,
SHKZG_ORIGINAL TYPE STRING,
MENGE_LONG TYPE STRING,
NPREI_LONG TYPE STRING,
MENGE_LONG_FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_1UF_INV_REF_L_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_J_1UF_INV_REF_L_STR-MANDT sy-vline 
WA_J_1UF_INV_REF_L_STR-REF_BUKRS sy-vline 
WA_J_1UF_INV_REF_L_STR-REF_BELNR sy-vline 
WA_J_1UF_INV_REF_L_STR-REF_GJAHR sy-vline 
WA_J_1UF_INV_REF_L_STR-INV_BELNR sy-vline 
WA_J_1UF_INV_REF_L_STR-INV_GJAHR sy-vline 
WA_J_1UF_INV_REF_L_STR-INV_BUZEI_LONG sy-vline 
WA_J_1UF_INV_REF_L_STR-FL_ORIGINAL sy-vline 
WA_J_1UF_INV_REF_L_STR-MATNR sy-vline 
WA_J_1UF_INV_REF_L_STR-MEINS sy-vline 
WA_J_1UF_INV_REF_L_STR-MENGE sy-vline 
WA_J_1UF_INV_REF_L_STR-NPREI sy-vline 
WA_J_1UF_INV_REF_L_STR-MATWA sy-vline 
WA_J_1UF_INV_REF_L_STR-MWSKZ sy-vline 
WA_J_1UF_INV_REF_L_STR-ZMWSK sy-vline 
WA_J_1UF_INV_REF_L_STR-CMWSK sy-vline 
WA_J_1UF_INV_REF_L_STR-KBETR sy-vline 
WA_J_1UF_INV_REF_L_STR-SGTXT sy-vline 
WA_J_1UF_INV_REF_L_STR-XREF1 sy-vline 
WA_J_1UF_INV_REF_L_STR-XREF2 sy-vline 
WA_J_1UF_INV_REF_L_STR-ORDNUM sy-vline 
WA_J_1UF_INV_REF_L_STR-ORDPOS sy-vline 
WA_J_1UF_INV_REF_L_STR-DMBTR sy-vline 
WA_J_1UF_INV_REF_L_STR-MWSTS sy-vline 
WA_J_1UF_INV_REF_L_STR-HWAER sy-vline 
WA_J_1UF_INV_REF_L_STR-WRBTR sy-vline 
WA_J_1UF_INV_REF_L_STR-WMWST sy-vline 
WA_J_1UF_INV_REF_L_STR-WAERS sy-vline 
WA_J_1UF_INV_REF_L_STR-SHKZG_ORIGINAL sy-vline 
WA_J_1UF_INV_REF_L_STR-MENGE_LONG sy-vline 
WA_J_1UF_INV_REF_L_STR-NPREI_LONG sy-vline 
WA_J_1UF_INV_REF_L_STR-MENGE_LONG_FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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