ABAP Select data from SAP table RNLCOT00 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 RNLCOT00 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 RNLCOT00. 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 RNLCOT00 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_RNLCOT00 TYPE STANDARD TABLE OF RNLCOT00,
      WA_RNLCOT00 TYPE RNLCOT00,
      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: <RNLCOT00> TYPE RNLCOT00.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RNLCOT00.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RNLCOT00
  INTO TABLE IT_RNLCOT00.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNLCOT00
*  INTO TABLE @DATA(IT_RNLCOT002).
*--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_RNLCOT00 INDEX 1 INTO DATA(WA_RNLCOT002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RNLCOT00 ASSIGNING <RNLCOT00>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNLCOT00>-PATNR = 1.
<RNLCOT00>-NNAMS = 1.
<RNLCOT00>-VNAMS = 1.
<RNLCOT00>-PNAME = 1.
<RNLCOT00>-FALNR = 1.

ENDLOOP.

LOOP AT IT_RNLCOT00 INTO WA_RNLCOT00.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNLCOT00-FZIFF, sy-vline,
  WA_RNLCOT00-FATXT, sy-vline,
  WA_RNLCOT00-BELNR, sy-vline,
  WA_RNLCOT00-BEGDT, sy-vline,
  WA_RNLCOT00-ENDDT, sy-vline,
  WA_RNLCOT00-KTKUB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNLCOT00 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_RNLCOT00 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_RNLCOT00 INTO WA_RNLCOT00.


*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 PATNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNLCOT00-PATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNLCOT00-PATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNLCOT00-FALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNLCOT00-FALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNLCOT00-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNLCOT00-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OESPI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNLCOT00-OESPI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNLCOT00-OESPI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OEFAI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNLCOT00-OEFAI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNLCOT00-OEFAI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OEBHI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNLCOT00-OEBHI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNLCOT00-OEBHI.
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_RNLCOT00_STR, 
PATNR TYPE STRING,
NNAMS TYPE STRING,
VNAMS TYPE STRING,
PNAME TYPE STRING,
FALNR TYPE STRING,
FZIFF TYPE STRING,
FATXT TYPE STRING,
BELNR TYPE STRING,
BEGDT TYPE STRING,
ENDDT TYPE STRING,
KTKUB TYPE STRING,
KAKUB TYPE STRING,
BSTTX TYPE STRING,
KNAME TYPE STRING,
KNAMS TYPE STRING,
OESPI TYPE STRING,
OESPN TYPE STRING,
OEFAI TYPE STRING,
OEFAN TYPE STRING,
OEBHI TYPE STRING,
OEBHN TYPE STRING,
SUMMENTEXT TYPE STRING,
SUMME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNLCOT00_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_RNLCOT00_STR-PATNR sy-vline 
WA_RNLCOT00_STR-NNAMS sy-vline 
WA_RNLCOT00_STR-VNAMS sy-vline 
WA_RNLCOT00_STR-PNAME sy-vline 
WA_RNLCOT00_STR-FALNR sy-vline 
WA_RNLCOT00_STR-FZIFF sy-vline 
WA_RNLCOT00_STR-FATXT sy-vline 
WA_RNLCOT00_STR-BELNR sy-vline 
WA_RNLCOT00_STR-BEGDT sy-vline 
WA_RNLCOT00_STR-ENDDT sy-vline 
WA_RNLCOT00_STR-KTKUB sy-vline 
WA_RNLCOT00_STR-KAKUB sy-vline 
WA_RNLCOT00_STR-BSTTX sy-vline 
WA_RNLCOT00_STR-KNAME sy-vline 
WA_RNLCOT00_STR-KNAMS sy-vline 
WA_RNLCOT00_STR-OESPI sy-vline 
WA_RNLCOT00_STR-OESPN sy-vline 
WA_RNLCOT00_STR-OEFAI sy-vline 
WA_RNLCOT00_STR-OEFAN sy-vline 
WA_RNLCOT00_STR-OEBHI sy-vline 
WA_RNLCOT00_STR-OEBHN sy-vline 
WA_RNLCOT00_STR-SUMMENTEXT sy-vline 
WA_RNLCOT00_STR-SUMME sy-vline      INTO ld_text SEPARATED BY SPACE.

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