ABAP Select data from SAP table J_3RF_WW_ITEMS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_3RF_WW_ITEMS 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 J_3RF_WW_ITEMS. 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 J_3RF_WW_ITEMS 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_J_3RF_WW_ITEMS TYPE STANDARD TABLE OF J_3RF_WW_ITEMS,
      WA_J_3RF_WW_ITEMS TYPE J_3RF_WW_ITEMS,
      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: <J_3RF_WW_ITEMS> TYPE J_3RF_WW_ITEMS.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_3RF_WW_ITEMS.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_3RF_WW_ITEMS
  INTO TABLE IT_J_3RF_WW_ITEMS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_3RF_WW_ITEMS
*  INTO TABLE @DATA(IT_J_3RF_WW_ITEMS2).
*--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_J_3RF_WW_ITEMS INDEX 1 INTO DATA(WA_J_3RF_WW_ITEMS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_3RF_WW_ITEMS ASSIGNING <J_3RF_WW_ITEMS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_3RF_WW_ITEMS>-SEL = 1.
<J_3RF_WW_ITEMS>-ICON = 1.
<J_3RF_WW_ITEMS>-PERNR = 1.
<J_3RF_WW_ITEMS>-LASTNAME = 1.
<J_3RF_WW_ITEMS>-FIRSTNAME = 1.

ENDLOOP.

LOOP AT IT_J_3RF_WW_ITEMS INTO WA_J_3RF_WW_ITEMS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_3RF_WW_ITEMS-MIDDLENAME, sy-vline,
  WA_J_3RF_WW_ITEMS-JOB, sy-vline,
  WA_J_3RF_WW_ITEMS-JOBTXT, sy-vline,
  WA_J_3RF_WW_ITEMS-KOSTL, sy-vline,
  WA_J_3RF_WW_ITEMS-MATKL, sy-vline,
  WA_J_3RF_WW_ITEMS-CONFMATNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_3RF_WW_ITEMS 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_J_3RF_WW_ITEMS 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_J_3RF_WW_ITEMS INTO WA_J_3RF_WW_ITEMS.


*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 KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_WW_ITEMS-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_WW_ITEMS-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field CONFMATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_WW_ITEMS-CONFMATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_WW_ITEMS-CONFMATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_WW_ITEMS-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_WW_ITEMS-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_WW_ITEMS-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_WW_ITEMS-ANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_WW_ITEMS-ANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_WW_ITEMS-ANLN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_WW_ITEMS-QUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_WW_ITEMS-QUOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field AUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_WW_ITEMS-AUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_WW_ITEMS-AUOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field ACQVALUE
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_WW_ITEMS-ACQVALUE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_WW_ITEMS-ACQVALUE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field DEPR01
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_WW_ITEMS-DEPR01
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_WW_ITEMS-DEPR01.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field DEPRWW
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_WW_ITEMS-DEPRWW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_WW_ITEMS-DEPRWW.
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_J_3RF_WW_ITEMS_STR, 
SEL TYPE STRING,
ICON TYPE STRING,
PERNR TYPE STRING,
LASTNAME TYPE STRING,
FIRSTNAME TYPE STRING,
MIDDLENAME TYPE STRING,
JOB TYPE STRING,
JOBTXT TYPE STRING,
KOSTL TYPE STRING,
MATKL TYPE STRING,
CONFMATNR TYPE STRING,
WGBEZ TYPE STRING,
MATNR TYPE STRING,
BUKRS TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
DESCRIPT TYPE STRING,
QUOTA TYPE STRING,
QUOM TYPE STRING,
NDJAR TYPE STRING,
NDPER TYPE STRING,
AQUANT TYPE STRING,
AUOM TYPE STRING,
USEFULLIFE TYPE STRING,
ISSUEDATE TYPE STRING,
ENDOFUSE TYPE STRING,
ACQVALUE TYPE STRING,
DEPR01 TYPE STRING,
DEPRWW TYPE STRING,
PERCENTWEAR TYPE STRING,
WAERS TYPE STRING,
STATUS_TEXT TYPE STRING,
HEIGHT TYPE STRING,
CLOTHES TYPE STRING,
SHOES TYPE STRING,
HEAD TYPE STRING,
COLLAR TYPE STRING,
GLOVES TYPE STRING,
SOCKS TYPE STRING,
RESPIRATOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_3RF_WW_ITEMS_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_J_3RF_WW_ITEMS_STR-SEL sy-vline 
WA_J_3RF_WW_ITEMS_STR-ICON sy-vline 
WA_J_3RF_WW_ITEMS_STR-PERNR sy-vline 
WA_J_3RF_WW_ITEMS_STR-LASTNAME sy-vline 
WA_J_3RF_WW_ITEMS_STR-FIRSTNAME sy-vline 
WA_J_3RF_WW_ITEMS_STR-MIDDLENAME sy-vline 
WA_J_3RF_WW_ITEMS_STR-JOB sy-vline 
WA_J_3RF_WW_ITEMS_STR-JOBTXT sy-vline 
WA_J_3RF_WW_ITEMS_STR-KOSTL sy-vline 
WA_J_3RF_WW_ITEMS_STR-MATKL sy-vline 
WA_J_3RF_WW_ITEMS_STR-CONFMATNR sy-vline 
WA_J_3RF_WW_ITEMS_STR-WGBEZ sy-vline 
WA_J_3RF_WW_ITEMS_STR-MATNR sy-vline 
WA_J_3RF_WW_ITEMS_STR-BUKRS sy-vline 
WA_J_3RF_WW_ITEMS_STR-ANLN1 sy-vline 
WA_J_3RF_WW_ITEMS_STR-ANLN2 sy-vline 
WA_J_3RF_WW_ITEMS_STR-DESCRIPT sy-vline 
WA_J_3RF_WW_ITEMS_STR-QUOTA sy-vline 
WA_J_3RF_WW_ITEMS_STR-QUOM sy-vline 
WA_J_3RF_WW_ITEMS_STR-NDJAR sy-vline 
WA_J_3RF_WW_ITEMS_STR-NDPER sy-vline 
WA_J_3RF_WW_ITEMS_STR-AQUANT sy-vline 
WA_J_3RF_WW_ITEMS_STR-AUOM sy-vline 
WA_J_3RF_WW_ITEMS_STR-USEFULLIFE sy-vline 
WA_J_3RF_WW_ITEMS_STR-ISSUEDATE sy-vline 
WA_J_3RF_WW_ITEMS_STR-ENDOFUSE sy-vline 
WA_J_3RF_WW_ITEMS_STR-ACQVALUE sy-vline 
WA_J_3RF_WW_ITEMS_STR-DEPR01 sy-vline 
WA_J_3RF_WW_ITEMS_STR-DEPRWW sy-vline 
WA_J_3RF_WW_ITEMS_STR-PERCENTWEAR sy-vline 
WA_J_3RF_WW_ITEMS_STR-WAERS sy-vline 
WA_J_3RF_WW_ITEMS_STR-STATUS_TEXT sy-vline 
WA_J_3RF_WW_ITEMS_STR-HEIGHT sy-vline 
WA_J_3RF_WW_ITEMS_STR-CLOTHES sy-vline 
WA_J_3RF_WW_ITEMS_STR-SHOES sy-vline 
WA_J_3RF_WW_ITEMS_STR-HEAD sy-vline 
WA_J_3RF_WW_ITEMS_STR-COLLAR sy-vline 
WA_J_3RF_WW_ITEMS_STR-GLOVES sy-vline 
WA_J_3RF_WW_ITEMS_STR-SOCKS sy-vline 
WA_J_3RF_WW_ITEMS_STR-RESPIRATOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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