ABAP Select data from SAP table RN1_CORD_ORDSRV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN1_CORD_ORDSRV 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_CORD_ORDSRV. 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_CORD_ORDSRV 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_CORD_ORDSRV TYPE STANDARD TABLE OF RN1_CORD_ORDSRV,
      WA_RN1_CORD_ORDSRV TYPE RN1_CORD_ORDSRV,
      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_CORD_ORDSRV> TYPE RN1_CORD_ORDSRV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN1_CORD_ORDSRV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN1_CORD_ORDSRV
  INTO TABLE IT_RN1_CORD_ORDSRV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN1_CORD_ORDSRV
*  INTO TABLE @DATA(IT_RN1_CORD_ORDSRV2).
*--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_CORD_ORDSRV INDEX 1 INTO DATA(WA_RN1_CORD_ORDSRV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN1_CORD_ORDSRV ASSIGNING <RN1_CORD_ORDSRV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN1_CORD_ORDSRV>-ID = 1.
<RN1_CORD_ORDSRV>-R_CYCLE_TEMPLATE = 1.
<RN1_CORD_ORDSRV>-R_SERVICE = 1.
<RN1_CORD_ORDSRV>-LEIST = 1.
<RN1_CORD_ORDSRV>-LEITX = 1.

ENDLOOP.

LOOP AT IT_RN1_CORD_ORDSRV INTO WA_RN1_CORD_ORDSRV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN1_CORD_ORDSRV-CYCLE_TEXT, sy-vline,
  WA_RN1_CORD_ORDSRV-CYCLE_ID, sy-vline,
  WA_RN1_CORD_ORDSRV-LOCALIZATION, sy-vline,
  WA_RN1_CORD_ORDSRV-LOCALIZATION_TEXT, sy-vline,
  WA_RN1_CORD_ORDSRV-FASTING, sy-vline,
  WA_RN1_CORD_ORDSRV-CONSENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN1_CORD_ORDSRV 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_CORD_ORDSRV 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_CORD_ORDSRV INTO WA_RN1_CORD_ORDSRV.


*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 LEIST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_CORD_ORDSRV-LEIST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_CORD_ORDSRV-LEIST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CYCLE_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_CORD_ORDSRV-CYCLE_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_CORD_ORDSRV-CYCLE_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOCALIZATION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1_CORD_ORDSRV-LOCALIZATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_CORD_ORDSRV-LOCALIZATION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CYCLE_TIME_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RN1_CORD_ORDSRV-CYCLE_TIME_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1_CORD_ORDSRV-CYCLE_TIME_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_RN1_CORD_ORDSRV_STR, 
ID TYPE STRING,
R_CYCLE_TEMPLATE TYPE STRING,
R_SERVICE TYPE STRING,
LEIST TYPE STRING,
LEITX TYPE STRING,
CYCLE_TEXT TYPE STRING,
CYCLE_ID TYPE STRING,
LOCALIZATION TYPE STRING,
LOCALIZATION_TEXT TYPE STRING,
FASTING TYPE STRING,
CONSENT TYPE STRING,
SUPPLEMENTARY_TEXT TYPE STRING,
START_DATE TYPE STRING,
START_TIME TYPE STRING,
STATUS TYPE STRING,
STATUS_TEXT TYPE STRING,
LIDI TYPE STRING,
CONCLUSION TYPE STRING,
CYCLE_ICON TYPE STRING,
HAS_GEN TYPE STRING,
CYCLE_START_DATE TYPE STRING,
CYCLE_START_TIME TYPE STRING,
CYCLE_END_DATE TYPE STRING,
CYCLE_END_TIME TYPE STRING,
CYCLE_DURATION TYPE STRING,
CYCLE_TIME_UNIT TYPE STRING,
CYCLE_MAXNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN1_CORD_ORDSRV_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_CORD_ORDSRV_STR-ID sy-vline 
WA_RN1_CORD_ORDSRV_STR-R_CYCLE_TEMPLATE sy-vline 
WA_RN1_CORD_ORDSRV_STR-R_SERVICE sy-vline 
WA_RN1_CORD_ORDSRV_STR-LEIST sy-vline 
WA_RN1_CORD_ORDSRV_STR-LEITX sy-vline 
WA_RN1_CORD_ORDSRV_STR-CYCLE_TEXT sy-vline 
WA_RN1_CORD_ORDSRV_STR-CYCLE_ID sy-vline 
WA_RN1_CORD_ORDSRV_STR-LOCALIZATION sy-vline 
WA_RN1_CORD_ORDSRV_STR-LOCALIZATION_TEXT sy-vline 
WA_RN1_CORD_ORDSRV_STR-FASTING sy-vline 
WA_RN1_CORD_ORDSRV_STR-CONSENT sy-vline 
WA_RN1_CORD_ORDSRV_STR-SUPPLEMENTARY_TEXT sy-vline 
WA_RN1_CORD_ORDSRV_STR-START_DATE sy-vline 
WA_RN1_CORD_ORDSRV_STR-START_TIME sy-vline 
WA_RN1_CORD_ORDSRV_STR-STATUS sy-vline 
WA_RN1_CORD_ORDSRV_STR-STATUS_TEXT sy-vline 
WA_RN1_CORD_ORDSRV_STR-LIDI sy-vline 
WA_RN1_CORD_ORDSRV_STR-CONCLUSION sy-vline 
WA_RN1_CORD_ORDSRV_STR-CYCLE_ICON sy-vline 
WA_RN1_CORD_ORDSRV_STR-HAS_GEN sy-vline 
WA_RN1_CORD_ORDSRV_STR-CYCLE_START_DATE sy-vline 
WA_RN1_CORD_ORDSRV_STR-CYCLE_START_TIME sy-vline 
WA_RN1_CORD_ORDSRV_STR-CYCLE_END_DATE sy-vline 
WA_RN1_CORD_ORDSRV_STR-CYCLE_END_TIME sy-vline 
WA_RN1_CORD_ORDSRV_STR-CYCLE_DURATION sy-vline 
WA_RN1_CORD_ORDSRV_STR-CYCLE_TIME_UNIT sy-vline 
WA_RN1_CORD_ORDSRV_STR-CYCLE_MAXNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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