ABAP Select data from SAP table WLF_HILIST_TM_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLF_HILIST_TM_ITEM
*  INTO TABLE @DATA(IT_WLF_HILIST_TM_ITEM2).
*--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_WLF_HILIST_TM_ITEM INDEX 1 INTO DATA(WA_WLF_HILIST_TM_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLF_HILIST_TM_ITEM>-POSNR = 1.
<WLF_HILIST_TM_ITEM>-NETWR = 1.
<WLF_HILIST_TM_ITEM>-MATNR = 1.
<WLF_HILIST_TM_ITEM>-ARKTX = 1.
<WLF_HILIST_TM_ITEM>-MATKL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLF_HILIST_TM_ITEM-WERKS, sy-vline,
  WA_WLF_HILIST_TM_ITEM-MENGE, sy-vline,
  WA_WLF_HILIST_TM_ITEM-WFKME, sy-vline,
  WA_WLF_HILIST_TM_ITEM-CHARG, sy-vline,
  WA_WLF_HILIST_TM_ITEM-NETPR, sy-vline,
  WA_WLF_HILIST_TM_ITEM-PEINH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLF_HILIST_TM_ITEM 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_WLF_HILIST_TM_ITEM 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_WLF_HILIST_TM_ITEM INTO WA_WLF_HILIST_TM_ITEM.


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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field SAKTO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WLF_HILIST_TM_ITEM-SAKTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLF_HILIST_TM_ITEM-SAKTO.
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_WLF_HILIST_TM_ITEM_STR, 
POSNR TYPE STRING,
NETWR TYPE STRING,
MATNR TYPE STRING,
ARKTX TYPE STRING,
MATKL TYPE STRING,
WERKS TYPE STRING,
MENGE TYPE STRING,
WFKME TYPE STRING,
CHARG TYPE STRING,
NETPR TYPE STRING,
PEINH TYPE STRING,
FPRME TYPE STRING,
LFTYPV TYPE STRING,
WBELNV TYPE STRING,
POSNRV TYPE STRING,
GJAHRV TYPE STRING,
FTYPV_V TYPE STRING,
WBELN_V TYPE STRING,
POSNR_V TYPE STRING,
REF_TYPE TYPE STRING,
REF_NUMBER TYPE STRING,
REF_ITEM_NUMBER TYPE STRING,
REF_TYPE_2 TYPE STRING,
REF_NUMBER_2 TYPE STRING,
REF_ITEM_NUM_2 TYPE STRING,
CONTRACT_TYPE TYPE STRING,
CONTRACT TYPE STRING,
CONTRACT_ITEM TYPE STRING,
GSBER TYPE STRING,
KOSTL TYPE STRING,
PRCTR TYPE STRING,
KOKRS TYPE STRING,
AUFNR TYPE STRING,
PS_PSP_PNR TYPE STRING,
SAKTO TYPE STRING,
KOWRR TYPE STRING,
ITEM_CANCELED TYPE STRING,
ITEMCAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLF_HILIST_TM_ITEM_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_WLF_HILIST_TM_ITEM_STR-POSNR sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-NETWR sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-MATNR sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-ARKTX sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-MATKL sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-WERKS sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-MENGE sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-WFKME sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-CHARG sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-NETPR sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-PEINH sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-FPRME sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-LFTYPV sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-WBELNV sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-POSNRV sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-GJAHRV sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-FTYPV_V sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-WBELN_V sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-POSNR_V sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-REF_TYPE sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-REF_NUMBER sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-REF_ITEM_NUMBER sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-REF_TYPE_2 sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-REF_NUMBER_2 sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-REF_ITEM_NUM_2 sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-CONTRACT_TYPE sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-CONTRACT sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-CONTRACT_ITEM sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-GSBER sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-KOSTL sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-PRCTR sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-KOKRS sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-AUFNR sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-PS_PSP_PNR sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-SAKTO sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-KOWRR sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-ITEM_CANCELED sy-vline 
WA_WLF_HILIST_TM_ITEM_STR-ITEMCAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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