ABAP Select data from SAP table RNLBAULI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNLBAULI
*  INTO TABLE @DATA(IT_RNLBAULI2).
*--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_RNLBAULI INDEX 1 INTO DATA(WA_RNLBAULI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNLBAULI>-LEVEL_ASS = 1.
<RNLBAULI>-ORGID = 1.
<RNLBAULI>-BAUID = 1.
<RNLBAULI>-ORGTY = 1.
<RNLBAULI>-ORGNA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNLBAULI-ORGKB, sy-vline,
  WA_RNLBAULI-OTTXT, sy-vline,
  WA_RNLBAULI-SERIAL_NO_HI, sy-vline,
  WA_RNLBAULI-KEY_HI, sy-vline,
  WA_RNLBAULI-LEVEL_HI, sy-vline,
  WA_RNLBAULI-BAUID_HI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNLBAULI 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_RNLBAULI 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_RNLBAULI INTO WA_RNLBAULI.


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

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

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

*Conversion exit ALPHA, internal->external for field PARENT_BAUID_HI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNLBAULI-PARENT_BAUID_HI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNLBAULI-PARENT_BAUID_HI.
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_RNLBAULI_STR, 
LEVEL_ASS TYPE STRING,
ORGID TYPE STRING,
BAUID TYPE STRING,
ORGTY TYPE STRING,
ORGNA TYPE STRING,
ORGKB TYPE STRING,
OTTXT TYPE STRING,
SERIAL_NO_HI TYPE STRING,
KEY_HI TYPE STRING,
LEVEL_HI TYPE STRING,
BAUID_HI TYPE STRING,
PARENT_BAUID_HI TYPE STRING,
BAUTY_HI TYPE STRING,
BAUNA_HI TYPE STRING,
BKURZ_HI TYPE STRING,
BAUKB_HI TYPE STRING,
BTTXT_HI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNLBAULI_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_RNLBAULI_STR-LEVEL_ASS sy-vline 
WA_RNLBAULI_STR-ORGID sy-vline 
WA_RNLBAULI_STR-BAUID sy-vline 
WA_RNLBAULI_STR-ORGTY sy-vline 
WA_RNLBAULI_STR-ORGNA sy-vline 
WA_RNLBAULI_STR-ORGKB sy-vline 
WA_RNLBAULI_STR-OTTXT sy-vline 
WA_RNLBAULI_STR-SERIAL_NO_HI sy-vline 
WA_RNLBAULI_STR-KEY_HI sy-vline 
WA_RNLBAULI_STR-LEVEL_HI sy-vline 
WA_RNLBAULI_STR-BAUID_HI sy-vline 
WA_RNLBAULI_STR-PARENT_BAUID_HI sy-vline 
WA_RNLBAULI_STR-BAUTY_HI sy-vline 
WA_RNLBAULI_STR-BAUNA_HI sy-vline 
WA_RNLBAULI_STR-BKURZ_HI sy-vline 
WA_RNLBAULI_STR-BAUKB_HI sy-vline 
WA_RNLBAULI_STR-BTTXT_HI sy-vline      INTO ld_text SEPARATED BY SPACE.

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