ABAP Select data from SAP table RJKSDDEMANDCHANGE_CUST_DEFAULT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJKSDDEMANDCHANGE_CUST_DEFAULT
*  INTO TABLE @DATA(IT_RJKSDDEMANDCHANGE_CUST_DEFAULT2).
*--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_RJKSDDEMANDCHANGE_CUST_DEFAULT INDEX 1 INTO DATA(WA_RJKSDDEMANDCHANGE_CUST_DEFAULT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJKSDDEMANDCHANGE_CUST_DEFAULT>-STATE_ICON = 1.
<RJKSDDEMANDCHANGE_CUST_DEFAULT>-VERSION = 1.
<RJKSDDEMANDCHANGE_CUST_DEFAULT>-VBELN = 1.
<RJKSDDEMANDCHANGE_CUST_DEFAULT>-POSNR = 1.
<RJKSDDEMANDCHANGE_CUST_DEFAULT>-ISSUE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJKSDDEMANDCHANGE_CUST_DEFAULT-PHASEMDL, sy-vline,
  WA_RJKSDDEMANDCHANGE_CUST_DEFAULT-PHASENBR, sy-vline,
  WA_RJKSDDEMANDCHANGE_CUST_DEFAULT-ISMISSUETYPEAC, sy-vline,
  WA_RJKSDDEMANDCHANGE_CUST_DEFAULT-ISMPUBLDATE, sy-vline,
  WA_RJKSDDEMANDCHANGE_CUST_DEFAULT-ISMCOPYNR, sy-vline,
  WA_RJKSDDEMANDCHANGE_CUST_DEFAULT-ISMONSALEDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJKSDDEMANDCHANGE_CUST_DEFAULT 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_RJKSDDEMANDCHANGE_CUST_DEFAULT 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_RJKSDDEMANDCHANGE_CUST_DEFAULT INTO WA_RJKSDDEMANDCHANGE_CUST_DEFAULT.


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

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

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDDEMANDCHANGE_CUST_DEFAULT-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDDEMANDCHANGE_CUST_DEFAULT-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_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR, 
STATE_ICON TYPE STRING,
VERSION TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
ISSUE TYPE STRING,
PHASEMDL TYPE STRING,
PHASENBR TYPE STRING,
ISMISSUETYPEAC TYPE STRING,
ISMPUBLDATE TYPE STRING,
ISMCOPYNR TYPE STRING,
ISMONSALEDATE TYPE STRING,
ISMOFFSALEDATE TYPE STRING,
ISMINITSHIPDATE TYPE STRING,
XORDER TYPE STRING,
XDELIVERY TYPE STRING,
BLOCKED TYPE STRING,
XINTERRUPT TYPE STRING,
XLOCKED TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VKGRP TYPE STRING,
VKBUR TYPE STRING,
ISSUE_TEXT TYPE STRING,
UNIT TYPE STRING,
LOCKEDBYUSER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_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_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-STATE_ICON sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-VERSION sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-VBELN sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-POSNR sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-ISSUE sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-PHASEMDL sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-PHASENBR sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-ISMISSUETYPEAC sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-ISMPUBLDATE sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-ISMCOPYNR sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-ISMONSALEDATE sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-ISMOFFSALEDATE sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-ISMINITSHIPDATE sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-XORDER sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-XDELIVERY sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-BLOCKED sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-XINTERRUPT sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-XLOCKED sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-VKORG sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-VTWEG sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-SPART sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-VKGRP sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-VKBUR sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-ISSUE_TEXT sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-UNIT sy-vline 
WA_RJKSDDEMANDCHANGE_CUST_DEFAULT_STR-LOCKEDBYUSER sy-vline      INTO ld_text SEPARATED BY SPACE.

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