ABAP Select data from SAP table RJKSDISSFORECITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJKSDISSFORECITEM
*  INTO TABLE @DATA(IT_RJKSDISSFORECITEM2).
*--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_RJKSDISSFORECITEM INDEX 1 INTO DATA(WA_RJKSDISSFORECITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJKSDISSFORECITEM>-AREA = 1.
<RJKSDISSFORECITEM>-SEGMENT = 1.
<RJKSDISSFORECITEM>-ISSUE = 1.
<RJKSDISSFORECITEM>-REF_ISSUE = 1.
<RJKSDISSFORECITEM>-MED_PROD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJKSDISSFORECITEM-PUBLDATE, sy-vline,
  WA_RJKSDISSFORECITEM-WEIGHT, sy-vline,
  WA_RJKSDISSFORECITEM-PER_CENT, sy-vline,
  WA_RJKSDISSFORECITEM-SOLD, sy-vline,
  WA_RJKSDISSFORECITEM-RETURNS, sy-vline,
  WA_RJKSDISSFORECITEM-SHIPPED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJKSDISSFORECITEM 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_RJKSDISSFORECITEM 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_RJKSDISSFORECITEM INTO WA_RJKSDISSFORECITEM.


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

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

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

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

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

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

*Conversion exit MATN1, internal->external for field REF_PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDISSFORECITEM-REF_PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDISSFORECITEM-REF_PRODUCT.
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_RJKSDISSFORECITEM_STR, 
AREA TYPE STRING,
SEGMENT TYPE STRING,
ISSUE TYPE STRING,
REF_ISSUE TYPE STRING,
MED_PROD TYPE STRING,
PUBLDATE TYPE STRING,
WEIGHT TYPE STRING,
PER_CENT TYPE STRING,
SOLD TYPE STRING,
RETURNS TYPE STRING,
SHIPPED TYPE STRING,
UNIT TYPE STRING,
RETURNS_PER_SOLD TYPE STRING,
ATYP TYPE STRING,
DESCRIPTIONEVENT TYPE STRING,
REF_PRODUCT TYPE STRING,
VERSION TYPE STRING,
QUAN_VERIFIED TYPE STRING,
QUAN_EVENT_VERIF TYPE STRING,
ISMCOPYNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJKSDISSFORECITEM_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_RJKSDISSFORECITEM_STR-AREA sy-vline 
WA_RJKSDISSFORECITEM_STR-SEGMENT sy-vline 
WA_RJKSDISSFORECITEM_STR-ISSUE sy-vline 
WA_RJKSDISSFORECITEM_STR-REF_ISSUE sy-vline 
WA_RJKSDISSFORECITEM_STR-MED_PROD sy-vline 
WA_RJKSDISSFORECITEM_STR-PUBLDATE sy-vline 
WA_RJKSDISSFORECITEM_STR-WEIGHT sy-vline 
WA_RJKSDISSFORECITEM_STR-PER_CENT sy-vline 
WA_RJKSDISSFORECITEM_STR-SOLD sy-vline 
WA_RJKSDISSFORECITEM_STR-RETURNS sy-vline 
WA_RJKSDISSFORECITEM_STR-SHIPPED sy-vline 
WA_RJKSDISSFORECITEM_STR-UNIT sy-vline 
WA_RJKSDISSFORECITEM_STR-RETURNS_PER_SOLD sy-vline 
WA_RJKSDISSFORECITEM_STR-ATYP sy-vline 
WA_RJKSDISSFORECITEM_STR-DESCRIPTIONEVENT sy-vline 
WA_RJKSDISSFORECITEM_STR-REF_PRODUCT sy-vline 
WA_RJKSDISSFORECITEM_STR-VERSION sy-vline 
WA_RJKSDISSFORECITEM_STR-QUAN_VERIFIED sy-vline 
WA_RJKSDISSFORECITEM_STR-QUAN_EVENT_VERIF sy-vline 
WA_RJKSDISSFORECITEM_STR-ISMCOPYNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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