ABAP Select data from SAP table RNLRA 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 RNLRA 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 RNLRA. 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 RNLRA 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_RNLRA TYPE STANDARD TABLE OF RNLRA,
      WA_RNLRA TYPE RNLRA,
      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: <RNLRA> TYPE RNLRA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNLRA
*  INTO TABLE @DATA(IT_RNLRA2).
*--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_RNLRA INDEX 1 INTO DATA(WA_RNLRA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNLRA>-MANDT = 1.
<RNLRA>-EINRI = 1.
<RNLRA>-RGART = 1.
<RNLRA>-ABTAR = 1.
<RNLRA>-TALST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNLRA-MSGTY, sy-vline,
  WA_RNLRA-EXCZR, sy-vline,
  WA_RNLRA-TLST1, sy-vline,
  WA_RNLRA-TLST2, sy-vline,
  WA_RNLRA-BEGDT, sy-vline,
  WA_RNLRA-ENDDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNLRA 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_RNLRA 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_RNLRA INTO WA_RNLRA.


*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_RNLRA-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNLRA-EINRI.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field TLST1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNLRA-TLST1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNLRA-TLST1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TLST2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNLRA-TLST2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNLRA-TLST2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LNRL1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNLRA-LNRL1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNLRA-LNRL1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LNRL2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNLRA-LNRL2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNLRA-LNRL2.
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_RNLRA_STR, 
MANDT TYPE STRING,
EINRI TYPE STRING,
RGART TYPE STRING,
ABTAR TYPE STRING,
TALST TYPE STRING,
MSGTY TYPE STRING,
EXCZR TYPE STRING,
TLST1 TYPE STRING,
TLST2 TYPE STRING,
BEGDT TYPE STRING,
ENDDT TYPE STRING,
BEGZT TYPE STRING,
ENDZT TYPE STRING,
LNRL1 TYPE STRING,
LNRL2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNLRA_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_RNLRA_STR-MANDT sy-vline 
WA_RNLRA_STR-EINRI sy-vline 
WA_RNLRA_STR-RGART sy-vline 
WA_RNLRA_STR-ABTAR sy-vline 
WA_RNLRA_STR-TALST sy-vline 
WA_RNLRA_STR-MSGTY sy-vline 
WA_RNLRA_STR-EXCZR sy-vline 
WA_RNLRA_STR-TLST1 sy-vline 
WA_RNLRA_STR-TLST2 sy-vline 
WA_RNLRA_STR-BEGDT sy-vline 
WA_RNLRA_STR-ENDDT sy-vline 
WA_RNLRA_STR-BEGZT sy-vline 
WA_RNLRA_STR-ENDZT sy-vline 
WA_RNLRA_STR-LNRL1 sy-vline 
WA_RNLRA_STR-LNRL2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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