ABAP Select data from SAP table WRF_ITEM_K003Z_STY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WRF_ITEM_K003Z_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 WRF_ITEM_K003Z_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 WRF_ITEM_K003Z_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_WRF_ITEM_K003Z_STY TYPE STANDARD TABLE OF WRF_ITEM_K003Z_STY,
      WA_WRF_ITEM_K003Z_STY TYPE WRF_ITEM_K003Z_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: <WRF_ITEM_K003Z_STY> TYPE WRF_ITEM_K003Z_STY.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WRF_ITEM_K003Z_STY.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WRF_ITEM_K003Z_STY
  INTO TABLE IT_WRF_ITEM_K003Z_STY.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRF_ITEM_K003Z_STY
*  INTO TABLE @DATA(IT_WRF_ITEM_K003Z_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_WRF_ITEM_K003Z_STY INDEX 1 INTO DATA(WA_WRF_ITEM_K003Z_STY2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WRF_ITEM_K003Z_STY ASSIGNING <WRF_ITEM_K003Z_STY>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRF_ITEM_K003Z_STY>-SIZE_DIM = 1.
<WRF_ITEM_K003Z_STY>-BASIC_MATL = 1.
<WRF_ITEM_K003Z_STY>-STD_DESCR = 1.
<WRF_ITEM_K003Z_STY>-DSN_OFFICE = 1.
<WRF_ITEM_K003Z_STY>-COMPETITOR = 1.

ENDLOOP.

LOOP AT IT_WRF_ITEM_K003Z_STY INTO WA_WRF_ITEM_K003Z_STY.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRF_ITEM_K003Z_STY-MANUFACTUR, sy-vline,
  WA_WRF_ITEM_K003Z_STY-GENETIC_INFO, sy-vline,
  WA_WRF_ITEM_K003Z_STY-ALCOHOL_PERC_VOL, sy-vline,
  WA_WRF_ITEM_K003Z_STY-FAT_CONTENT, sy-vline,
  WA_WRF_ITEM_K003Z_STY-KEEP_REFRIG, sy-vline,
  WA_WRF_ITEM_K003Z_STY-KEEP_FROZEN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRF_ITEM_K003Z_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_WRF_ITEM_K003Z_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_WRF_ITEM_K003Z_STY INTO WA_WRF_ITEM_K003Z_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 COMPETITOR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WRF_ITEM_K003Z_STY-COMPETITOR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF_ITEM_K003Z_STY-COMPETITOR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field FOLLOW_UP
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WRF_ITEM_K003Z_STY-FOLLOW_UP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF_ITEM_K003Z_STY-FOLLOW_UP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASE_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WRF_ITEM_K003Z_STY-BASE_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRF_ITEM_K003Z_STY-BASE_UOM.
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_WRF_ITEM_K003Z_STY_STR, 
SIZE_DIM TYPE STRING,
BASIC_MATL TYPE STRING,
STD_DESCR TYPE STRING,
DSN_OFFICE TYPE STRING,
COMPETITOR TYPE STRING,
MANUFACTUR TYPE STRING,
GENETIC_INFO TYPE STRING,
ALCOHOL_PERC_VOL TYPE STRING,
FAT_CONTENT TYPE STRING,
KEEP_REFRIG TYPE STRING,
KEEP_FROZEN TYPE STRING,
GREEN_DOT TYPE STRING,
EXPIR_MARKING TYPE STRING,
PRICE_MARKING TYPE STRING,
KEEP_DRY TYPE STRING,
HEAT_SENSITIVE TYPE STRING,
PREDECES_MAT_ID TYPE STRING,
FOLLOW_UP TYPE STRING,
HAZARD_CLASS TYPE STRING,
HAZARD_DESCRIPT TYPE STRING,
HAZARD_DESCR_2 TYPE STRING,
HAZARD_DESCR_3 TYPE STRING,
SAISON_PERIOD TYPE STRING,
BASE_UOM TYPE STRING,
TAX_TYPE TYPE STRING,
TAX_CLASS TYPE STRING,
VAL_CLASS TYPE STRING,
MWSKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRF_ITEM_K003Z_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_WRF_ITEM_K003Z_STY_STR-SIZE_DIM sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-BASIC_MATL sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-STD_DESCR sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-DSN_OFFICE sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-COMPETITOR sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-MANUFACTUR sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-GENETIC_INFO sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-ALCOHOL_PERC_VOL sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-FAT_CONTENT sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-KEEP_REFRIG sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-KEEP_FROZEN sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-GREEN_DOT sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-EXPIR_MARKING sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-PRICE_MARKING sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-KEEP_DRY sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-HEAT_SENSITIVE sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-PREDECES_MAT_ID sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-FOLLOW_UP sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-HAZARD_CLASS sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-HAZARD_DESCRIPT sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-HAZARD_DESCR_2 sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-HAZARD_DESCR_3 sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-SAISON_PERIOD sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-BASE_UOM sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-TAX_TYPE sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-TAX_CLASS sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-VAL_CLASS sy-vline 
WA_WRF_ITEM_K003Z_STY_STR-MWSKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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