ABAP Select data from SAP table RNBICL04 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNBICL04 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 RNBICL04. 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 RNBICL04 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_RNBICL04 TYPE STANDARD TABLE OF RNBICL04,
      WA_RNBICL04 TYPE RNBICL04,
      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: <RNBICL04> TYPE RNBICL04.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RNBICL04.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RNBICL04
  INTO TABLE IT_RNBICL04.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNBICL04
*  INTO TABLE @DATA(IT_RNBICL042).
*--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_RNBICL04 INDEX 1 INTO DATA(WA_RNBICL042).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RNBICL04 ASSIGNING <RNBICL04>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNBICL04>-EINRI = 1.
<RNBICL04>-ORGID = 1.
<RNBICL04>-LEIST = 1.
<RNBICL04>-LEVON = 1.
<RNBICL04>-BEGZT = 1.

ENDLOOP.

LOOP AT IT_RNBICL04 INTO WA_RNBICL04.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNBICL04-LEBIS, sy-vline,
  WA_RNBICL04-ENDZT, sy-vline,
  WA_RNBICL04-MENGE, sy-vline,
  WA_RNBICL04-ANFOE, sy-vline,
  WA_RNBICL04-ERBOE, sy-vline,
  WA_RNBICL04-ANPOE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNBICL04 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_RNBICL04 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_RNBICL04 INTO WA_RNBICL04.


*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 EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBICL04-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBICL04-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBICL04-ORGID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBICL04-ORGID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LEIST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBICL04-LEIST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBICL04-LEIST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANFOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBICL04-ANFOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBICL04-ANFOE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ERBOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBICL04-ERBOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBICL04-ERBOE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANPOE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBICL04-ANPOE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBICL04-ANPOE.
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_RNBICL04_STR, 
EINRI TYPE STRING,
ORGID TYPE STRING,
LEIST TYPE STRING,
LEVON TYPE STRING,
BEGZT TYPE STRING,
LEBIS TYPE STRING,
ENDZT TYPE STRING,
MENGE TYPE STRING,
ANFOE TYPE STRING,
ERBOE TYPE STRING,
ANPOE TYPE STRING,
ERBTY TYPE STRING,
STALS TYPE STRING,
HCOKZ TYPE STRING,
LEITX TYPE STRING,
VORER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNBICL04_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_RNBICL04_STR-EINRI sy-vline 
WA_RNBICL04_STR-ORGID sy-vline 
WA_RNBICL04_STR-LEIST sy-vline 
WA_RNBICL04_STR-LEVON sy-vline 
WA_RNBICL04_STR-BEGZT sy-vline 
WA_RNBICL04_STR-LEBIS sy-vline 
WA_RNBICL04_STR-ENDZT sy-vline 
WA_RNBICL04_STR-MENGE sy-vline 
WA_RNBICL04_STR-ANFOE sy-vline 
WA_RNBICL04_STR-ERBOE sy-vline 
WA_RNBICL04_STR-ANPOE sy-vline 
WA_RNBICL04_STR-ERBTY sy-vline 
WA_RNBICL04_STR-STALS sy-vline 
WA_RNBICL04_STR-HCOKZ sy-vline 
WA_RNBICL04_STR-LEITX sy-vline 
WA_RNBICL04_STR-VORER sy-vline      INTO ld_text SEPARATED BY SPACE.

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