ABAP Select data from SAP table RJKIF_SCHEDULE 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 RJKIF_SCHEDULE 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 RJKIF_SCHEDULE. 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 RJKIF_SCHEDULE 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_RJKIF_SCHEDULE TYPE STANDARD TABLE OF RJKIF_SCHEDULE,
      WA_RJKIF_SCHEDULE TYPE RJKIF_SCHEDULE,
      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: <RJKIF_SCHEDULE> TYPE RJKIF_SCHEDULE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJKIF_SCHEDULE
*  INTO TABLE @DATA(IT_RJKIF_SCHEDULE2).
*--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_RJKIF_SCHEDULE INDEX 1 INTO DATA(WA_RJKIF_SCHEDULE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJKIF_SCHEDULE>-SATZART = 1.
<RJKIF_SCHEDULE>-REFBELEG = 1.
<RJKIF_SCHEDULE>-VBELN = 1.
<RJKIF_SCHEDULE>-POSEX = 1.
<RJKIF_SCHEDULE>-ET_FUNKTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJKIF_SCHEDULE-AKTIVTYP, sy-vline,
  WA_RJKIF_SCHEDULE-GUELTIGVON, sy-vline,
  WA_RJKIF_SCHEDULE-GUELTIGBIS, sy-vline,
  WA_RJKIF_SCHEDULE-BEZPER, sy-vline,
  WA_RJKIF_SCHEDULE-ETMENGE, sy-vline,
  WA_RJKIF_SCHEDULE-RMG_PLAN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJKIF_SCHEDULE 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_RJKIF_SCHEDULE 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_RJKIF_SCHEDULE INTO WA_RJKIF_SCHEDULE.


*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_RJKIF_SCHEDULE-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKIF_SCHEDULE-VBELN.
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_RJKIF_SCHEDULE_STR, 
SATZART TYPE STRING,
REFBELEG TYPE STRING,
VBELN TYPE STRING,
POSEX TYPE STRING,
ET_FUNKTION TYPE STRING,
AKTIVTYP TYPE STRING,
GUELTIGVON TYPE STRING,
GUELTIGBIS TYPE STRING,
BEZPER TYPE STRING,
ETMENGE TYPE STRING,
RMG_PLAN TYPE STRING,
LFARTLOG_NB TYPE STRING,
ETVORZEI_KORR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJKIF_SCHEDULE_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_RJKIF_SCHEDULE_STR-SATZART sy-vline 
WA_RJKIF_SCHEDULE_STR-REFBELEG sy-vline 
WA_RJKIF_SCHEDULE_STR-VBELN sy-vline 
WA_RJKIF_SCHEDULE_STR-POSEX sy-vline 
WA_RJKIF_SCHEDULE_STR-ET_FUNKTION sy-vline 
WA_RJKIF_SCHEDULE_STR-AKTIVTYP sy-vline 
WA_RJKIF_SCHEDULE_STR-GUELTIGVON sy-vline 
WA_RJKIF_SCHEDULE_STR-GUELTIGBIS sy-vline 
WA_RJKIF_SCHEDULE_STR-BEZPER sy-vline 
WA_RJKIF_SCHEDULE_STR-ETMENGE sy-vline 
WA_RJKIF_SCHEDULE_STR-RMG_PLAN sy-vline 
WA_RJKIF_SCHEDULE_STR-LFARTLOG_NB sy-vline 
WA_RJKIF_SCHEDULE_STR-ETVORZEI_KORR sy-vline      INTO ld_text SEPARATED BY SPACE.

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