ABAP Select data from SAP table IDFIVATS_ALV_LIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDFIVATS_ALV_LIST
*  INTO TABLE @DATA(IT_IDFIVATS_ALV_LIST2).
*--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_IDFIVATS_ALV_LIST INDEX 1 INTO DATA(WA_IDFIVATS_ALV_LIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDFIVATS_ALV_LIST>-BUKRS = 1.
<IDFIVATS_ALV_LIST>-BELNR = 1.
<IDFIVATS_ALV_LIST>-GJAHR = 1.
<IDFIVATS_ALV_LIST>-MWSKZ = 1.
<IDFIVATS_ALV_LIST>-KTOSL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDFIVATS_ALV_LIST-BLART, sy-vline,
  WA_IDFIVATS_ALV_LIST-SHKZG, sy-vline,
  WA_IDFIVATS_ALV_LIST-BSCHL, sy-vline,
  WA_IDFIVATS_ALV_LIST-AWKEY, sy-vline,
  WA_IDFIVATS_ALV_LIST-BLDAT, sy-vline,
  WA_IDFIVATS_ALV_LIST-BUDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDFIVATS_ALV_LIST 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_IDFIVATS_ALV_LIST 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_IDFIVATS_ALV_LIST INTO WA_IDFIVATS_ALV_LIST.


*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_IDFIVATS_ALV_LIST-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDFIVATS_ALV_LIST-BELNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit AC152, internal->external for field BASE_AMT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDFIVATS_ALV_LIST-BASE_AMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDFIVATS_ALV_LIST-BASE_AMT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field TAX_AMT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDFIVATS_ALV_LIST-TAX_AMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDFIVATS_ALV_LIST-TAX_AMT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field TAX_DEDUCT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDFIVATS_ALV_LIST-TAX_DEDUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDFIVATS_ALV_LIST-TAX_DEDUCT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit AC152, internal->external for field USERFIELDNUM1
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDFIVATS_ALV_LIST-USERFIELDNUM1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDFIVATS_ALV_LIST-USERFIELDNUM1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field USERFIELDNUM2
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDFIVATS_ALV_LIST-USERFIELDNUM2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDFIVATS_ALV_LIST-USERFIELDNUM2.
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_IDFIVATS_ALV_LIST_STR, 
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
MWSKZ TYPE STRING,
KTOSL TYPE STRING,
BLART TYPE STRING,
SHKZG TYPE STRING,
BSCHL TYPE STRING,
AWKEY TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
VATDATE TYPE STRING,
REINDAT TYPE STRING,
BKTXT TYPE STRING,
TAXRATE TYPE STRING,
BASE_AMT TYPE STRING,
TAX_AMT TYPE STRING,
TAX_DEDUCT TYPE STRING,
ORIG_CURR TYPE STRING,
STCEG TYPE STRING,
INVNUMBER TYPE STRING,
REFNUMBER TYPE STRING,
VATSECTION TYPE STRING,
NUMMR TYPE STRING,
XREVERSAL TYPE STRING,
DP_TYPE TYPE STRING,
TEXT TYPE STRING,
USER_FIELD_1 TYPE STRING,
USER_FIELD_2 TYPE STRING,
USER_FIELD_3 TYPE STRING,
USER_FIELD_4 TYPE STRING,
USERFIELDNUM1 TYPE STRING,
USERFIELDNUM2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDFIVATS_ALV_LIST_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_IDFIVATS_ALV_LIST_STR-BUKRS sy-vline 
WA_IDFIVATS_ALV_LIST_STR-BELNR sy-vline 
WA_IDFIVATS_ALV_LIST_STR-GJAHR sy-vline 
WA_IDFIVATS_ALV_LIST_STR-MWSKZ sy-vline 
WA_IDFIVATS_ALV_LIST_STR-KTOSL sy-vline 
WA_IDFIVATS_ALV_LIST_STR-BLART sy-vline 
WA_IDFIVATS_ALV_LIST_STR-SHKZG sy-vline 
WA_IDFIVATS_ALV_LIST_STR-BSCHL sy-vline 
WA_IDFIVATS_ALV_LIST_STR-AWKEY sy-vline 
WA_IDFIVATS_ALV_LIST_STR-BLDAT sy-vline 
WA_IDFIVATS_ALV_LIST_STR-BUDAT sy-vline 
WA_IDFIVATS_ALV_LIST_STR-VATDATE sy-vline 
WA_IDFIVATS_ALV_LIST_STR-REINDAT sy-vline 
WA_IDFIVATS_ALV_LIST_STR-BKTXT sy-vline 
WA_IDFIVATS_ALV_LIST_STR-TAXRATE sy-vline 
WA_IDFIVATS_ALV_LIST_STR-BASE_AMT sy-vline 
WA_IDFIVATS_ALV_LIST_STR-TAX_AMT sy-vline 
WA_IDFIVATS_ALV_LIST_STR-TAX_DEDUCT sy-vline 
WA_IDFIVATS_ALV_LIST_STR-ORIG_CURR sy-vline 
WA_IDFIVATS_ALV_LIST_STR-STCEG sy-vline 
WA_IDFIVATS_ALV_LIST_STR-INVNUMBER sy-vline 
WA_IDFIVATS_ALV_LIST_STR-REFNUMBER sy-vline 
WA_IDFIVATS_ALV_LIST_STR-VATSECTION sy-vline 
WA_IDFIVATS_ALV_LIST_STR-NUMMR sy-vline 
WA_IDFIVATS_ALV_LIST_STR-XREVERSAL sy-vline 
WA_IDFIVATS_ALV_LIST_STR-DP_TYPE sy-vline 
WA_IDFIVATS_ALV_LIST_STR-TEXT sy-vline 
WA_IDFIVATS_ALV_LIST_STR-USER_FIELD_1 sy-vline 
WA_IDFIVATS_ALV_LIST_STR-USER_FIELD_2 sy-vline 
WA_IDFIVATS_ALV_LIST_STR-USER_FIELD_3 sy-vline 
WA_IDFIVATS_ALV_LIST_STR-USER_FIELD_4 sy-vline 
WA_IDFIVATS_ALV_LIST_STR-USERFIELDNUM1 sy-vline 
WA_IDFIVATS_ALV_LIST_STR-USERFIELDNUM2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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