ABAP Select data from SAP table ARRANG_ALV_GRID_PUR_LIST_STY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ARRANG_ALV_GRID_PUR_LIST_STY
*  INTO TABLE @DATA(IT_ARRANG_ALV_GRID_PUR_LIST_STY2).
*--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_ARRANG_ALV_GRID_PUR_LIST_STY INDEX 1 INTO DATA(WA_ARRANG_ALV_GRID_PUR_LIST_STY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ARRANG_ALV_GRID_PUR_LIST_STY>-COUNTER_ITEM = 1.
<ARRANG_ALV_GRID_PUR_LIST_STY>-KNUMA = 1.
<ARRANG_ALV_GRID_PUR_LIST_STY>-LINE_TYPE = 1.
<ARRANG_ALV_GRID_PUR_LIST_STY>-DESCRIPTION_LINE = 1.
<ARRANG_ALV_GRID_PUR_LIST_STY>-NO_DATA_EXIST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ARRANG_ALV_GRID_PUR_LIST_STY-ADDITIONAL_TEXT, sy-vline,
  WA_ARRANG_ALV_GRID_PUR_LIST_STY-POSNR, sy-vline,
  WA_ARRANG_ALV_GRID_PUR_LIST_STY-KNUMH, sy-vline,
  WA_ARRANG_ALV_GRID_PUR_LIST_STY-KOPOS, sy-vline,
  WA_ARRANG_ALV_GRID_PUR_LIST_STY-KAPPL, sy-vline,
  WA_ARRANG_ALV_GRID_PUR_LIST_STY-KOTABNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ARRANG_ALV_GRID_PUR_LIST_STY 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_ARRANG_ALV_GRID_PUR_LIST_STY 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_ARRANG_ALV_GRID_PUR_LIST_STY INTO WA_ARRANG_ALV_GRID_PUR_LIST_STY.


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

*Conversion exit KOTAB, internal->external for field KOTABNR
CALL FUNCTION 'CONVERSION_EXIT_KOTAB_OUTPUT'
  EXPORTING
    input =                      WA_ARRANG_ALV_GRID_PUR_LIST_STY-KOTABNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ARRANG_ALV_GRID_PUR_LIST_STY-KOTABNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ARRANG_ALV_GRID_PUR_LIST_STY-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ARRANG_ALV_GRID_PUR_LIST_STY-EBELN.
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_ARRANG_ALV_GRID_PUR_LIST_STY_STR, 
COUNTER_ITEM TYPE STRING,
KNUMA TYPE STRING,
LINE_TYPE TYPE STRING,
DESCRIPTION_LINE TYPE STRING,
NO_DATA_EXIST TYPE STRING,
ADDITIONAL_TEXT TYPE STRING,
POSNR TYPE STRING,
KNUMH TYPE STRING,
KOPOS TYPE STRING,
KAPPL TYPE STRING,
KOTABNR TYPE STRING,
KSCHL TYPE STRING,
KSCHL_VTEXT TYPE STRING,
VAKEY_HEADER TYPE STRING,
CR_DATAB TYPE STRING,
CR_DATBI TYPE STRING,
KNUMH_VB TYPE STRING,
ELIKZ TYPE STRING,
PURCH_EBELN TYPE STRING,
PURCH_EBELP TYPE STRING,
PURCH_MATNR TYPE STRING,
PURCH_BSTMG TYPE STRING,
PURCH_WEMNG TYPE STRING,
PURCH_OWEMG TYPE STRING,
PURCH_WE_MEINS TYPE STRING,
PURCH_OWEPZ TYPE STRING,
PURCH_WE_KONWA TYPE STRING,
PURCH_REMNG TYPE STRING,
PURCH_OREMG TYPE STRING,
PURCH_RE_MEINS TYPE STRING,
PURCH_OREPZ TYPE STRING,
PURCH_RE_KONWA TYPE STRING,
KRECH TYPE STRING,
KZBZG TYPE STRING,
BOSTA TYPE STRING,
LOEVM_KO TYPE STRING,
BOVER TYPE STRING,
STFKZ TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ARRANG_ALV_GRID_PUR_LIST_STY_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_ARRANG_ALV_GRID_PUR_LIST_STY_STR-COUNTER_ITEM sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-KNUMA sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-LINE_TYPE sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-DESCRIPTION_LINE sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-NO_DATA_EXIST sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-ADDITIONAL_TEXT sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-POSNR sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-KNUMH sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-KOPOS sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-KAPPL sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-KOTABNR sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-KSCHL sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-KSCHL_VTEXT sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-VAKEY_HEADER sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-CR_DATAB sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-CR_DATBI sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-KNUMH_VB sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-ELIKZ sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-PURCH_EBELN sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-PURCH_EBELP sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-PURCH_MATNR sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-PURCH_BSTMG sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-PURCH_WEMNG sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-PURCH_OWEMG sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-PURCH_WE_MEINS sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-PURCH_OWEPZ sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-PURCH_WE_KONWA sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-PURCH_REMNG sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-PURCH_OREMG sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-PURCH_RE_MEINS sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-PURCH_OREPZ sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-PURCH_RE_KONWA sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-KRECH sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-KZBZG sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-BOSTA sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-LOEVM_KO sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-BOVER sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-STFKZ sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-EBELN sy-vline 
WA_ARRANG_ALV_GRID_PUR_LIST_STY_STR-EBELP sy-vline      INTO ld_text SEPARATED BY SPACE.

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