ABAP Select data from SAP table ISIVGLITEMTASKUI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISIVGLITEMTASKUI
*  INTO TABLE @DATA(IT_ISIVGLITEMTASKUI2).
*--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_ISIVGLITEMTASKUI INDEX 1 INTO DATA(WA_ISIVGLITEMTASKUI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISIVGLITEMTASKUI>-MANDT = 1.
<ISIVGLITEMTASKUI>-SUPPLIERINVOICE = 1.
<ISIVGLITEMTASKUI>-FISCALYEAR = 1.
<ISIVGLITEMTASKUI>-SUPLRINVCITEMACCOUNTASSIGNMENT = 1.
<ISIVGLITEMTASKUI>-COMPANYCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISIVGLITEMTASKUI-WBSELEMENTINTERNALID, sy-vline,
  WA_ISIVGLITEMTASKUI-COSTCENTER, sy-vline,
  WA_ISIVGLITEMTASKUI-CONTROLLINGAREA, sy-vline,
  WA_ISIVGLITEMTASKUI-PROFITCENTER, sy-vline,
  WA_ISIVGLITEMTASKUI-VALIDITYDATE, sy-vline,
  WA_ISIVGLITEMTASKUI-SUPLRINVCACCOUNTASSIGNMENTDESC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISIVGLITEMTASKUI 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_ISIVGLITEMTASKUI 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_ISIVGLITEMTASKUI INTO WA_ISIVGLITEMTASKUI.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field GLACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISIVGLITEMTASKUI-GLACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISIVGLITEMTASKUI-GLACCOUNT.
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_ISIVGLITEMTASKUI_STR, 
MANDT TYPE STRING,
SUPPLIERINVOICE TYPE STRING,
FISCALYEAR TYPE STRING,
SUPLRINVCITEMACCOUNTASSIGNMENT TYPE STRING,
COMPANYCODE TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
COSTCENTER TYPE STRING,
CONTROLLINGAREA TYPE STRING,
PROFITCENTER TYPE STRING,
VALIDITYDATE TYPE STRING,
SUPLRINVCACCOUNTASSIGNMENTDESC TYPE STRING,
ACCOUNTASSIGNMENTTYPE TYPE STRING,
SUPPLIERINVOICEITEMTEXT TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
SUPPLIERINVOICEITEMAMOUNT TYPE STRING,
GLACCOUNT TYPE STRING,
TAXCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISIVGLITEMTASKUI_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_ISIVGLITEMTASKUI_STR-MANDT sy-vline 
WA_ISIVGLITEMTASKUI_STR-SUPPLIERINVOICE sy-vline 
WA_ISIVGLITEMTASKUI_STR-FISCALYEAR sy-vline 
WA_ISIVGLITEMTASKUI_STR-SUPLRINVCITEMACCOUNTASSIGNMENT sy-vline 
WA_ISIVGLITEMTASKUI_STR-COMPANYCODE sy-vline 
WA_ISIVGLITEMTASKUI_STR-WBSELEMENTINTERNALID sy-vline 
WA_ISIVGLITEMTASKUI_STR-COSTCENTER sy-vline 
WA_ISIVGLITEMTASKUI_STR-CONTROLLINGAREA sy-vline 
WA_ISIVGLITEMTASKUI_STR-PROFITCENTER sy-vline 
WA_ISIVGLITEMTASKUI_STR-VALIDITYDATE sy-vline 
WA_ISIVGLITEMTASKUI_STR-SUPLRINVCACCOUNTASSIGNMENTDESC sy-vline 
WA_ISIVGLITEMTASKUI_STR-ACCOUNTASSIGNMENTTYPE sy-vline 
WA_ISIVGLITEMTASKUI_STR-SUPPLIERINVOICEITEMTEXT sy-vline 
WA_ISIVGLITEMTASKUI_STR-DOCUMENTCURRENCY sy-vline 
WA_ISIVGLITEMTASKUI_STR-SUPPLIERINVOICEITEMAMOUNT sy-vline 
WA_ISIVGLITEMTASKUI_STR-GLACCOUNT sy-vline 
WA_ISIVGLITEMTASKUI_STR-TAXCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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