ABAP Select data from SAP table RVNWCH_BOA_PROT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RVNWCH_BOA_PROT
*  INTO TABLE @DATA(IT_RVNWCH_BOA_PROT2).
*--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_RVNWCH_BOA_PROT INDEX 1 INTO DATA(WA_RVNWCH_BOA_PROT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RVNWCH_BOA_PROT>-MANDT = 1.
<RVNWCH_BOA_PROT>-LFINQ = 1.
<RVNWCH_BOA_PROT>-LFPKT = 1.
<RVNWCH_BOA_PROT>-EINRI = 1.
<RVNWCH_BOA_PROT>-RQ_DATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RVNWCH_BOA_PROT-RQ_TIME, sy-vline,
  WA_RVNWCH_BOA_PROT-SELKZ, sy-vline,
  WA_RVNWCH_BOA_PROT-INQ_DATE, sy-vline,
  WA_RVNWCH_BOA_PROT-LDATE, sy-vline,
  WA_RVNWCH_BOA_PROT-RQ_CONTEXT, sy-vline,
  WA_RVNWCH_BOA_PROT-TEST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RVNWCH_BOA_PROT 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_RVNWCH_BOA_PROT 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_RVNWCH_BOA_PROT INTO WA_RVNWCH_BOA_PROT.


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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field LF301
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RVNWCH_BOA_PROT-LF301
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RVNWCH_BOA_PROT-LF301.
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_RVNWCH_BOA_PROT_STR, 
MANDT TYPE STRING,
LFINQ TYPE STRING,
LFPKT TYPE STRING,
EINRI TYPE STRING,
RQ_DATE TYPE STRING,
RQ_TIME TYPE STRING,
SELKZ TYPE STRING,
INQ_DATE TYPE STRING,
LDATE TYPE STRING,
RQ_CONTEXT TYPE STRING,
TEST TYPE STRING,
PATNR TYPE STRING,
FALNR TYPE STRING,
LFDNR TYPE STRING,
KOSTR TYPE STRING,
CARDNR TYPE STRING,
LNCRD TYPE STRING,
LNCRD_DET TYPE STRING,
SESTA TYPE STRING,
ELCA TYPE STRING,
RS_DATE TYPE STRING,
RS_TIME TYPE STRING,
RS_CONTEXT TYPE STRING,
RETURN_CODE TYPE STRING,
RETURN_MESSAGE TYPE STRING,
STATE TYPE STRING,
COVINT TYPE STRING,
LF301 TYPE STRING,
PROCESSED TYPE STRING,
USER_FIELD TYPE STRING,
UPDAT TYPE STRING,
UPTIM TYPE STRING,
UPUSR TYPE STRING,
MSGID TYPE STRING,
MSGNO TYPE STRING,
MSGTY TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RVNWCH_BOA_PROT_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_RVNWCH_BOA_PROT_STR-MANDT sy-vline 
WA_RVNWCH_BOA_PROT_STR-LFINQ sy-vline 
WA_RVNWCH_BOA_PROT_STR-LFPKT sy-vline 
WA_RVNWCH_BOA_PROT_STR-EINRI sy-vline 
WA_RVNWCH_BOA_PROT_STR-RQ_DATE sy-vline 
WA_RVNWCH_BOA_PROT_STR-RQ_TIME sy-vline 
WA_RVNWCH_BOA_PROT_STR-SELKZ sy-vline 
WA_RVNWCH_BOA_PROT_STR-INQ_DATE sy-vline 
WA_RVNWCH_BOA_PROT_STR-LDATE sy-vline 
WA_RVNWCH_BOA_PROT_STR-RQ_CONTEXT sy-vline 
WA_RVNWCH_BOA_PROT_STR-TEST sy-vline 
WA_RVNWCH_BOA_PROT_STR-PATNR sy-vline 
WA_RVNWCH_BOA_PROT_STR-FALNR sy-vline 
WA_RVNWCH_BOA_PROT_STR-LFDNR sy-vline 
WA_RVNWCH_BOA_PROT_STR-KOSTR sy-vline 
WA_RVNWCH_BOA_PROT_STR-CARDNR sy-vline 
WA_RVNWCH_BOA_PROT_STR-LNCRD sy-vline 
WA_RVNWCH_BOA_PROT_STR-LNCRD_DET sy-vline 
WA_RVNWCH_BOA_PROT_STR-SESTA sy-vline 
WA_RVNWCH_BOA_PROT_STR-ELCA sy-vline 
WA_RVNWCH_BOA_PROT_STR-RS_DATE sy-vline 
WA_RVNWCH_BOA_PROT_STR-RS_TIME sy-vline 
WA_RVNWCH_BOA_PROT_STR-RS_CONTEXT sy-vline 
WA_RVNWCH_BOA_PROT_STR-RETURN_CODE sy-vline 
WA_RVNWCH_BOA_PROT_STR-RETURN_MESSAGE sy-vline 
WA_RVNWCH_BOA_PROT_STR-STATE sy-vline 
WA_RVNWCH_BOA_PROT_STR-COVINT sy-vline 
WA_RVNWCH_BOA_PROT_STR-LF301 sy-vline 
WA_RVNWCH_BOA_PROT_STR-PROCESSED sy-vline 
WA_RVNWCH_BOA_PROT_STR-USER_FIELD sy-vline 
WA_RVNWCH_BOA_PROT_STR-UPDAT sy-vline 
WA_RVNWCH_BOA_PROT_STR-UPTIM sy-vline 
WA_RVNWCH_BOA_PROT_STR-UPUSR sy-vline 
WA_RVNWCH_BOA_PROT_STR-MSGID sy-vline 
WA_RVNWCH_BOA_PROT_STR-MSGNO sy-vline 
WA_RVNWCH_BOA_PROT_STR-MSGTY sy-vline 
WA_RVNWCH_BOA_PROT_STR-MSGV1 sy-vline 
WA_RVNWCH_BOA_PROT_STR-MSGV2 sy-vline 
WA_RVNWCH_BOA_PROT_STR-MSGV3 sy-vline 
WA_RVNWCH_BOA_PROT_STR-MSGV4 sy-vline 
WA_RVNWCH_BOA_PROT_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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