ABAP Select data from SAP table RNBADI_INS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNBADI_INS
*  INTO TABLE @DATA(IT_RNBADI_INS2).
*--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_RNBADI_INS INDEX 1 INTO DATA(WA_RNBADI_INS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNBADI_INS>-KOSTRVK1 = 1.
<RNBADI_INS>-MGARTVK1 = 1.
<RNBADI_INS>-VERNRVK1 = 1.
<RNBADI_INS>-VTTYPVK1 = 1.
<RNBADI_INS>-VFALLVK1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNBADI_INS-PFLZZVK1, sy-vline,
  WA_RNBADI_INS-ZTAGEVK1, sy-vline,
  WA_RNBADI_INS-BTRZZVK1, sy-vline,
  WA_RNBADI_INS-NZZGRVK1, sy-vline,
  WA_RNBADI_INS-VTAGEVK1, sy-vline,
  WA_RNBADI_INS-KOSTRVK2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNBADI_INS 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_RNBADI_INS 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_RNBADI_INS INTO WA_RNBADI_INS.


*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 KOSTRVK1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBADI_INS-KOSTRVK1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBADI_INS-KOSTRVK1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VTTYPVK1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBADI_INS-VTTYPVK1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBADI_INS-VTTYPVK1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NZZGRVK1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBADI_INS-NZZGRVK1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBADI_INS-NZZGRVK1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTRVK2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBADI_INS-KOSTRVK2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBADI_INS-KOSTRVK2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VTTYPVK2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBADI_INS-VTTYPVK2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBADI_INS-VTTYPVK2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NZZGRVK2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBADI_INS-NZZGRVK2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBADI_INS-NZZGRVK2.
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_RNBADI_INS_STR, 
KOSTRVK1 TYPE STRING,
MGARTVK1 TYPE STRING,
VERNRVK1 TYPE STRING,
VTTYPVK1 TYPE STRING,
VFALLVK1 TYPE STRING,
PFLZZVK1 TYPE STRING,
ZTAGEVK1 TYPE STRING,
BTRZZVK1 TYPE STRING,
NZZGRVK1 TYPE STRING,
VTAGEVK1 TYPE STRING,
KOSTRVK2 TYPE STRING,
MGARTVK2 TYPE STRING,
VERNRVK2 TYPE STRING,
VTTYPVK2 TYPE STRING,
VFALLVK2 TYPE STRING,
PFLZZVK2 TYPE STRING,
ZTAGEVK2 TYPE STRING,
BTRZZVK2 TYPE STRING,
NZZGRVK2 TYPE STRING,
VTAGEVK2 TYPE STRING,
VZUZA TYPE STRING,
VFALL TYPE STRING,
ACTAB TYPE STRING,
KVK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNBADI_INS_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_RNBADI_INS_STR-KOSTRVK1 sy-vline 
WA_RNBADI_INS_STR-MGARTVK1 sy-vline 
WA_RNBADI_INS_STR-VERNRVK1 sy-vline 
WA_RNBADI_INS_STR-VTTYPVK1 sy-vline 
WA_RNBADI_INS_STR-VFALLVK1 sy-vline 
WA_RNBADI_INS_STR-PFLZZVK1 sy-vline 
WA_RNBADI_INS_STR-ZTAGEVK1 sy-vline 
WA_RNBADI_INS_STR-BTRZZVK1 sy-vline 
WA_RNBADI_INS_STR-NZZGRVK1 sy-vline 
WA_RNBADI_INS_STR-VTAGEVK1 sy-vline 
WA_RNBADI_INS_STR-KOSTRVK2 sy-vline 
WA_RNBADI_INS_STR-MGARTVK2 sy-vline 
WA_RNBADI_INS_STR-VERNRVK2 sy-vline 
WA_RNBADI_INS_STR-VTTYPVK2 sy-vline 
WA_RNBADI_INS_STR-VFALLVK2 sy-vline 
WA_RNBADI_INS_STR-PFLZZVK2 sy-vline 
WA_RNBADI_INS_STR-ZTAGEVK2 sy-vline 
WA_RNBADI_INS_STR-BTRZZVK2 sy-vline 
WA_RNBADI_INS_STR-NZZGRVK2 sy-vline 
WA_RNBADI_INS_STR-VTAGEVK2 sy-vline 
WA_RNBADI_INS_STR-VZUZA sy-vline 
WA_RNBADI_INS_STR-VFALL sy-vline 
WA_RNBADI_INS_STR-ACTAB sy-vline 
WA_RNBADI_INS_STR-KVK sy-vline      INTO ld_text SEPARATED BY SPACE.

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