ABAP Select data from SAP table RJKSDDEMANDCHANGE_ALV1_CHARACT into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJKSDDEMANDCHANGE_ALV1_CHARACT 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_ALV1_CHARACT. 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_ALV1_CHARACT 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_ALV1_CHARACT TYPE STANDARD TABLE OF RJKSDDEMANDCHANGE_ALV1_CHARACT,
      WA_RJKSDDEMANDCHANGE_ALV1_CHARACT TYPE RJKSDDEMANDCHANGE_ALV1_CHARACT,
      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_ALV1_CHARACT> TYPE RJKSDDEMANDCHANGE_ALV1_CHARACT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJKSDDEMANDCHANGE_ALV1_CHARACT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJKSDDEMANDCHANGE_ALV1_CHARACT
  INTO TABLE IT_RJKSDDEMANDCHANGE_ALV1_CHARACT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJKSDDEMANDCHANGE_ALV1_CHARACT
*  INTO TABLE @DATA(IT_RJKSDDEMANDCHANGE_ALV1_CHARACT2).
*--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_ALV1_CHARACT INDEX 1 INTO DATA(WA_RJKSDDEMANDCHANGE_ALV1_CHARACT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJKSDDEMANDCHANGE_ALV1_CHARACT ASSIGNING <RJKSDDEMANDCHANGE_ALV1_CHARACT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJKSDDEMANDCHANGE_ALV1_CHARACT>-WERKS = 1.
<RJKSDDEMANDCHANGE_ALV1_CHARACT>-SPLIT = 1.
<RJKSDDEMANDCHANGE_ALV1_CHARACT>-SUPPLYSTATUS = 1.
<RJKSDDEMANDCHANGE_ALV1_CHARACT>-REGIO = 1.
<RJKSDDEMANDCHANGE_ALV1_CHARACT>-KDGRP = 1.

ENDLOOP.

LOOP AT IT_RJKSDDEMANDCHANGE_ALV1_CHARACT INTO WA_RJKSDDEMANDCHANGE_ALV1_CHARACT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJKSDDEMANDCHANGE_ALV1_CHARACT-EVKSTART, sy-vline,
  WA_RJKSDDEMANDCHANGE_ALV1_CHARACT-EVKSTBEZ, sy-vline,
  WA_RJKSDDEMANDCHANGE_ALV1_CHARACT-EVKFLAECHE, sy-vline,
  WA_RJKSDDEMANDCHANGE_ALV1_CHARACT-ISMGEOKATEGORIE, sy-vline,
  WA_RJKSDDEMANDCHANGE_ALV1_CHARACT-EUMSEINFL, sy-vline,
  WA_RJKSDDEMANDCHANGE_ALV1_CHARACT-SEGMENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJKSDDEMANDCHANGE_ALV1_CHARACT 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_ALV1_CHARACT 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_ALV1_CHARACT INTO WA_RJKSDDEMANDCHANGE_ALV1_CHARACT.


*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 EVKSTART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDDEMANDCHANGE_ALV1_CHARACT-EVKSTART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDDEMANDCHANGE_ALV1_CHARACT-EVKSTART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EVKFLAECHE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDDEMANDCHANGE_ALV1_CHARACT-EVKFLAECHE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDDEMANDCHANGE_ALV1_CHARACT-EVKFLAECHE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EUMSEINFL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDDEMANDCHANGE_ALV1_CHARACT-EUMSEINFL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDDEMANDCHANGE_ALV1_CHARACT-EUMSEINFL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDDEMANDCHANGE_ALV1_CHARACT-SEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDDEMANDCHANGE_ALV1_CHARACT-SEGMENT.
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_ALV1_CHARACT_STR, 
WERKS TYPE STRING,
SPLIT TYPE STRING,
SUPPLYSTATUS TYPE STRING,
REGIO TYPE STRING,
KDGRP TYPE STRING,
EVKSTART TYPE STRING,
EVKSTBEZ TYPE STRING,
EVKFLAECHE TYPE STRING,
ISMGEOKATEGORIE TYPE STRING,
EUMSEINFL TYPE STRING,
SEGMENT TYPE STRING,
VARIANT_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJKSDDEMANDCHANGE_ALV1_CHARACT_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_ALV1_CHARACT_STR-WERKS sy-vline 
WA_RJKSDDEMANDCHANGE_ALV1_CHARACT_STR-SPLIT sy-vline 
WA_RJKSDDEMANDCHANGE_ALV1_CHARACT_STR-SUPPLYSTATUS sy-vline 
WA_RJKSDDEMANDCHANGE_ALV1_CHARACT_STR-REGIO sy-vline 
WA_RJKSDDEMANDCHANGE_ALV1_CHARACT_STR-KDGRP sy-vline 
WA_RJKSDDEMANDCHANGE_ALV1_CHARACT_STR-EVKSTART sy-vline 
WA_RJKSDDEMANDCHANGE_ALV1_CHARACT_STR-EVKSTBEZ sy-vline 
WA_RJKSDDEMANDCHANGE_ALV1_CHARACT_STR-EVKFLAECHE sy-vline 
WA_RJKSDDEMANDCHANGE_ALV1_CHARACT_STR-ISMGEOKATEGORIE sy-vline 
WA_RJKSDDEMANDCHANGE_ALV1_CHARACT_STR-EUMSEINFL sy-vline 
WA_RJKSDDEMANDCHANGE_ALV1_CHARACT_STR-SEGMENT sy-vline 
WA_RJKSDDEMANDCHANGE_ALV1_CHARACT_STR-VARIANT_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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