ABAP Select data from SAP table RJKSDDEMAND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJKSDDEMAND
*  INTO TABLE @DATA(IT_RJKSDDEMAND2).
*--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_RJKSDDEMAND INDEX 1 INTO DATA(WA_RJKSDDEMAND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJKSDDEMAND>-WEEK = 1.
<RJKSDDEMAND>-WEEKDAY = 1.
<RJKSDDEMAND>-WEEKDAY_TXT = 1.
<RJKSDDEMAND>-MARK = 1.
<RJKSDDEMAND>-ISSUE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJKSDDEMAND-PHASEMDL, sy-vline,
  WA_RJKSDDEMAND-PHASENBR, sy-vline,
  WA_RJKSDDEMAND-SPLIT, sy-vline,
  WA_RJKSDDEMAND-QUANTITY, sy-vline,
  WA_RJKSDDEMAND-QUANTITY_FIXED, sy-vline,
  WA_RJKSDDEMAND-QUANTITY_SHP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJKSDDEMAND 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_RJKSDDEMAND 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_RJKSDDEMAND INTO WA_RJKSDDEMAND.


*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 ISSUE
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDDEMAND-ISSUE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDDEMAND-ISSUE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REASONCODE1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDDEMAND-REASONCODE1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDDEMAND-REASONCODE1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REASONCODE2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDDEMAND-REASONCODE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDDEMAND-REASONCODE2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REASONCODE3
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDDEMAND-REASONCODE3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDDEMAND-REASONCODE3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REASONCODE4
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDDEMAND-REASONCODE4
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDDEMAND-REASONCODE4.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REASONCODE5
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDDEMAND-REASONCODE5
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDDEMAND-REASONCODE5.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REASONCODE6
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDDEMAND-REASONCODE6
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDDEMAND-REASONCODE6.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REASONCODE7
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDDEMAND-REASONCODE7
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDDEMAND-REASONCODE7.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REASONCODE8
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDDEMAND-REASONCODE8
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDDEMAND-REASONCODE8.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REASONCODE9
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDDEMAND-REASONCODE9
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDDEMAND-REASONCODE9.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDDEMAND-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDDEMAND-UNIT.
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_RJKSDDEMAND_STR, 
WEEK TYPE STRING,
WEEKDAY TYPE STRING,
WEEKDAY_TXT TYPE STRING,
MARK TYPE STRING,
ISSUE TYPE STRING,
PHASEMDL TYPE STRING,
PHASENBR TYPE STRING,
SPLIT TYPE STRING,
QUANTITY TYPE STRING,
QUANTITY_FIXED TYPE STRING,
QUANTITY_SHP TYPE STRING,
QUANTITY_ACT TYPE STRING,
QUANTITY_RETURN TYPE STRING,
QUANTITY1 TYPE STRING,
REASONCODE1 TYPE STRING,
QUANTITY2 TYPE STRING,
REASONCODE2 TYPE STRING,
QUANTITY3 TYPE STRING,
REASONCODE3 TYPE STRING,
QUANTITY4 TYPE STRING,
REASONCODE4 TYPE STRING,
QUANTITY5 TYPE STRING,
REASONCODE5 TYPE STRING,
QUANTITY6 TYPE STRING,
REASONCODE6 TYPE STRING,
QUANTITY7 TYPE STRING,
REASONCODE7 TYPE STRING,
QUANTITY8 TYPE STRING,
REASONCODE8 TYPE STRING,
QUANTITY9 TYPE STRING,
REASONCODE9 TYPE STRING,
UNIT TYPE STRING,
QUANTITY_FIX_ORG TYPE STRING,
STATUSICON TYPE STRING,
ISM0RETURN TYPE STRING,
ISMCOPYNR TYPE STRING,
XORDER TYPE STRING,
XDELIVERY TYPE STRING,
XPLANABLE TYPE STRING,
XLOCKED TYPE STRING,
BLOCKED TYPE STRING,
PUBLDATE TYPE STRING,
ORIGINOFDATA TYPE STRING,
VOLUM TYPE STRING,
UPDKZ TYPE STRING,
QUAN_VERIFIED TYPE STRING,
QUAN_EVENT_VERIF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJKSDDEMAND_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_RJKSDDEMAND_STR-WEEK sy-vline 
WA_RJKSDDEMAND_STR-WEEKDAY sy-vline 
WA_RJKSDDEMAND_STR-WEEKDAY_TXT sy-vline 
WA_RJKSDDEMAND_STR-MARK sy-vline 
WA_RJKSDDEMAND_STR-ISSUE sy-vline 
WA_RJKSDDEMAND_STR-PHASEMDL sy-vline 
WA_RJKSDDEMAND_STR-PHASENBR sy-vline 
WA_RJKSDDEMAND_STR-SPLIT sy-vline 
WA_RJKSDDEMAND_STR-QUANTITY sy-vline 
WA_RJKSDDEMAND_STR-QUANTITY_FIXED sy-vline 
WA_RJKSDDEMAND_STR-QUANTITY_SHP sy-vline 
WA_RJKSDDEMAND_STR-QUANTITY_ACT sy-vline 
WA_RJKSDDEMAND_STR-QUANTITY_RETURN sy-vline 
WA_RJKSDDEMAND_STR-QUANTITY1 sy-vline 
WA_RJKSDDEMAND_STR-REASONCODE1 sy-vline 
WA_RJKSDDEMAND_STR-QUANTITY2 sy-vline 
WA_RJKSDDEMAND_STR-REASONCODE2 sy-vline 
WA_RJKSDDEMAND_STR-QUANTITY3 sy-vline 
WA_RJKSDDEMAND_STR-REASONCODE3 sy-vline 
WA_RJKSDDEMAND_STR-QUANTITY4 sy-vline 
WA_RJKSDDEMAND_STR-REASONCODE4 sy-vline 
WA_RJKSDDEMAND_STR-QUANTITY5 sy-vline 
WA_RJKSDDEMAND_STR-REASONCODE5 sy-vline 
WA_RJKSDDEMAND_STR-QUANTITY6 sy-vline 
WA_RJKSDDEMAND_STR-REASONCODE6 sy-vline 
WA_RJKSDDEMAND_STR-QUANTITY7 sy-vline 
WA_RJKSDDEMAND_STR-REASONCODE7 sy-vline 
WA_RJKSDDEMAND_STR-QUANTITY8 sy-vline 
WA_RJKSDDEMAND_STR-REASONCODE8 sy-vline 
WA_RJKSDDEMAND_STR-QUANTITY9 sy-vline 
WA_RJKSDDEMAND_STR-REASONCODE9 sy-vline 
WA_RJKSDDEMAND_STR-UNIT sy-vline 
WA_RJKSDDEMAND_STR-QUANTITY_FIX_ORG sy-vline 
WA_RJKSDDEMAND_STR-STATUSICON sy-vline 
WA_RJKSDDEMAND_STR-ISM0RETURN sy-vline 
WA_RJKSDDEMAND_STR-ISMCOPYNR sy-vline 
WA_RJKSDDEMAND_STR-XORDER sy-vline 
WA_RJKSDDEMAND_STR-XDELIVERY sy-vline 
WA_RJKSDDEMAND_STR-XPLANABLE sy-vline 
WA_RJKSDDEMAND_STR-XLOCKED sy-vline 
WA_RJKSDDEMAND_STR-BLOCKED sy-vline 
WA_RJKSDDEMAND_STR-PUBLDATE sy-vline 
WA_RJKSDDEMAND_STR-ORIGINOFDATA sy-vline 
WA_RJKSDDEMAND_STR-VOLUM sy-vline 
WA_RJKSDDEMAND_STR-UPDKZ sy-vline 
WA_RJKSDDEMAND_STR-QUAN_VERIFIED sy-vline 
WA_RJKSDDEMAND_STR-QUAN_EVENT_VERIF sy-vline      INTO ld_text SEPARATED BY SPACE.

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