ABAP Select data from SAP table RN1_DYNP_CYCLE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN1_DYNP_CYCLE 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 RN1_DYNP_CYCLE. 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 RN1_DYNP_CYCLE 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_RN1_DYNP_CYCLE TYPE STANDARD TABLE OF RN1_DYNP_CYCLE,
      WA_RN1_DYNP_CYCLE TYPE RN1_DYNP_CYCLE,
      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: <RN1_DYNP_CYCLE> TYPE RN1_DYNP_CYCLE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN1_DYNP_CYCLE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN1_DYNP_CYCLE
  INTO TABLE IT_RN1_DYNP_CYCLE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN1_DYNP_CYCLE
*  INTO TABLE @DATA(IT_RN1_DYNP_CYCLE2).
*--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_RN1_DYNP_CYCLE INDEX 1 INTO DATA(WA_RN1_DYNP_CYCLE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN1_DYNP_CYCLE ASSIGNING <RN1_DYNP_CYCLE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN1_DYNP_CYCLE>-AMOUNT = 1.
<RN1_DYNP_CYCLE>-DT_START = 1.
<RN1_DYNP_CYCLE>-DT_END = 1.
<RN1_DYNP_CYCLE>-MO = 1.
<RN1_DYNP_CYCLE>-TU = 1.

ENDLOOP.

LOOP AT IT_RN1_DYNP_CYCLE INTO WA_RN1_DYNP_CYCLE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN1_DYNP_CYCLE-WE, sy-vline,
  WA_RN1_DYNP_CYCLE-TH, sy-vline,
  WA_RN1_DYNP_CYCLE-FR, sy-vline,
  WA_RN1_DYNP_CYCLE-SA, sy-vline,
  WA_RN1_DYNP_CYCLE-SU, sy-vline,
  WA_RN1_DYNP_CYCLE-HOLIDAY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN1_DYNP_CYCLE 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_RN1_DYNP_CYCLE 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_RN1_DYNP_CYCLE INTO WA_RN1_DYNP_CYCLE.


*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 ME12D, internal->external for field DOSEDEC
CALL FUNCTION 'CONVERSION_EXIT_ME12D_OUTPUT'
  EXPORTING
    input =                      WA_RN1_DYNP_CYCLE-DOSEDEC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_DYNP_CYCLE-DOSEDEC.
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_RN1_DYNP_CYCLE_STR, 
AMOUNT TYPE STRING,
DT_START TYPE STRING,
DT_END TYPE STRING,
MO TYPE STRING,
TU TYPE STRING,
WE TYPE STRING,
TH TYPE STRING,
FR TYPE STRING,
SA TYPE STRING,
SU TYPE STRING,
HOLIDAY TYPE STRING,
RB_ED_ID TYPE STRING,
RB_EVERY_DAY TYPE STRING,
RB_INTERVAL_DAY TYPE STRING,
INTERVAL_DAY TYPE STRING,
TI_START TYPE STRING,
TI_END TYPE STRING,
INTERVAL_HOUR TYPE STRING,
DESCRIPTION TYPE STRING,
N1CWFT TYPE STRING,
N1INTER_M TYPE STRING,
N1TIMSP TYPE STRING,
N1ERGTAGE TYPE STRING,
RB_AM_AS TYPE STRING,
RB_ALLEMINUTEN TYPE STRING,
RB_ALLESTUNDEN TYPE STRING,
RB_RM_UM TYPE STRING,
RB_REGELM TYPE STRING,
RB_UNREGELM TYPE STRING,
DAYCYCLE TYPE STRING,
DOSEDEC TYPE STRING,
RETRO TYPE STRING,
FORWARD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN1_DYNP_CYCLE_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_RN1_DYNP_CYCLE_STR-AMOUNT sy-vline 
WA_RN1_DYNP_CYCLE_STR-DT_START sy-vline 
WA_RN1_DYNP_CYCLE_STR-DT_END sy-vline 
WA_RN1_DYNP_CYCLE_STR-MO sy-vline 
WA_RN1_DYNP_CYCLE_STR-TU sy-vline 
WA_RN1_DYNP_CYCLE_STR-WE sy-vline 
WA_RN1_DYNP_CYCLE_STR-TH sy-vline 
WA_RN1_DYNP_CYCLE_STR-FR sy-vline 
WA_RN1_DYNP_CYCLE_STR-SA sy-vline 
WA_RN1_DYNP_CYCLE_STR-SU sy-vline 
WA_RN1_DYNP_CYCLE_STR-HOLIDAY sy-vline 
WA_RN1_DYNP_CYCLE_STR-RB_ED_ID sy-vline 
WA_RN1_DYNP_CYCLE_STR-RB_EVERY_DAY sy-vline 
WA_RN1_DYNP_CYCLE_STR-RB_INTERVAL_DAY sy-vline 
WA_RN1_DYNP_CYCLE_STR-INTERVAL_DAY sy-vline 
WA_RN1_DYNP_CYCLE_STR-TI_START sy-vline 
WA_RN1_DYNP_CYCLE_STR-TI_END sy-vline 
WA_RN1_DYNP_CYCLE_STR-INTERVAL_HOUR sy-vline 
WA_RN1_DYNP_CYCLE_STR-DESCRIPTION sy-vline 
WA_RN1_DYNP_CYCLE_STR-N1CWFT sy-vline 
WA_RN1_DYNP_CYCLE_STR-N1INTER_M sy-vline 
WA_RN1_DYNP_CYCLE_STR-N1TIMSP sy-vline 
WA_RN1_DYNP_CYCLE_STR-N1ERGTAGE sy-vline 
WA_RN1_DYNP_CYCLE_STR-RB_AM_AS sy-vline 
WA_RN1_DYNP_CYCLE_STR-RB_ALLEMINUTEN sy-vline 
WA_RN1_DYNP_CYCLE_STR-RB_ALLESTUNDEN sy-vline 
WA_RN1_DYNP_CYCLE_STR-RB_RM_UM sy-vline 
WA_RN1_DYNP_CYCLE_STR-RB_REGELM sy-vline 
WA_RN1_DYNP_CYCLE_STR-RB_UNREGELM sy-vline 
WA_RN1_DYNP_CYCLE_STR-DAYCYCLE sy-vline 
WA_RN1_DYNP_CYCLE_STR-DOSEDEC sy-vline 
WA_RN1_DYNP_CYCLE_STR-RETRO sy-vline 
WA_RN1_DYNP_CYCLE_STR-FORWARD sy-vline      INTO ld_text SEPARATED BY SPACE.

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