ABAP Select data from SAP table /SAPTRX/FI_CL_INVOICE_ITEMS_2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPTRX/FI_CL_INVOICE_ITEMS_2 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 /SAPTRX/FI_CL_INVOICE_ITEMS_2. 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 /SAPTRX/FI_CL_INVOICE_ITEMS_2 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_/SAPTRX/FI_CL_INVOICE_ITEMS_2 TYPE STANDARD TABLE OF /SAPTRX/FI_CL_INVOICE_ITEMS_2,
      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2 TYPE /SAPTRX/FI_CL_INVOICE_ITEMS_2,
      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: </SAPTRX/FI_CL_INVOICE_ITEMS_2> TYPE /SAPTRX/FI_CL_INVOICE_ITEMS_2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SAPTRX/FI_CL_INVOICE_ITEMS_2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPTRX/FI_CL_INVOICE_ITEMS_2
  INTO TABLE IT_/SAPTRX/FI_CL_INVOICE_ITEMS_2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPTRX/FI_CL_INVOICE_ITEMS_2
*  INTO TABLE @DATA(IT_/SAPTRX/FI_CL_INVOICE_ITEMS_22).
*--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_/SAPTRX/FI_CL_INVOICE_ITEMS_2 INDEX 1 INTO DATA(WA_/SAPTRX/FI_CL_INVOICE_ITEMS_22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPTRX/FI_CL_INVOICE_ITEMS_2 ASSIGNING </SAPTRX/FI_CL_INVOICE_ITEMS_2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPTRX/FI_CL_INVOICE_ITEMS_2>-BUKRS = 1.
</SAPTRX/FI_CL_INVOICE_ITEMS_2>-BELNR = 1.
</SAPTRX/FI_CL_INVOICE_ITEMS_2>-GJAHR = 1.
</SAPTRX/FI_CL_INVOICE_ITEMS_2>-BUZEI = 1.
</SAPTRX/FI_CL_INVOICE_ITEMS_2>-AGZEI = 1.

ENDLOOP.

LOOP AT IT_/SAPTRX/FI_CL_INVOICE_ITEMS_2 INTO WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-WAERS, sy-vline,
  WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-CLRIN, sy-vline,
  WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-SHKZG, sy-vline,
  WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DMBTR, sy-vline,
  WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DMBE2, sy-vline,
  WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DMBE3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2 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_/SAPTRX/FI_CL_INVOICE_ITEMS_2 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_/SAPTRX/FI_CL_INVOICE_ITEMS_2 INTO WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DMBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBE2
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DMBE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DMBE2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBE3
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DMBE3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DMBE3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-WRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DIFHW
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DIFHW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DIFHW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DIFH2
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DIFH2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DIFH2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DIFH3
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DIFH3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DIFH3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field DIFFW
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DIFFW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-DIFFW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SKNTO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-SKNTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-SKNTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SKNT2
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-SKNT2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-SKNT2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SKNT3
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-SKNT3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-SKNT3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WSKTO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-WSKTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-WSKTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field BDIFF
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-BDIFF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-BDIFF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field BDIF2
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-BDIF2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-BDIF2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field BDIF3
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-BDIF3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-BDIF3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field RDIFF
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-RDIFF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-RDIFF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field RDIF2
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-RDIF2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-RDIF2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field RDIF3
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-RDIF3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2-RDIF3.
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_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR, 
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
AGZEI TYPE STRING,
WAERS TYPE STRING,
CLRIN TYPE STRING,
SHKZG TYPE STRING,
DMBTR TYPE STRING,
DMBE2 TYPE STRING,
DMBE3 TYPE STRING,
WRBTR TYPE STRING,
DIFHW TYPE STRING,
DIFH2 TYPE STRING,
DIFH3 TYPE STRING,
DIFFW TYPE STRING,
SKNTO TYPE STRING,
SKNT2 TYPE STRING,
SKNT3 TYPE STRING,
WSKTO TYPE STRING,
BDIFF TYPE STRING,
BDIF2 TYPE STRING,
BDIF3 TYPE STRING,
RDIFF TYPE STRING,
RDIF2 TYPE STRING,
RDIF3 TYPE STRING,
KOART TYPE STRING,
UMSKZ TYPE STRING,
AWTYP TYPE STRING,
AWKEY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_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_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-BUKRS sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-BELNR sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-GJAHR sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-BUZEI sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-AGZEI sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-WAERS sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-CLRIN sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-SHKZG sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-DMBTR sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-DMBE2 sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-DMBE3 sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-WRBTR sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-DIFHW sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-DIFH2 sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-DIFH3 sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-DIFFW sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-SKNTO sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-SKNT2 sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-SKNT3 sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-WSKTO sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-BDIFF sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-BDIF2 sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-BDIF3 sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-RDIFF sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-RDIF2 sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-RDIF3 sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-KOART sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-UMSKZ sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-AWTYP sy-vline 
WA_/SAPTRX/FI_CL_INVOICE_ITEMS_2_STR-AWKEY sy-vline      INTO ld_text SEPARATED BY SPACE.

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