ABAP Select data from SAP table RNPAT_VNDAE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNPAT_VNDAE
*  INTO TABLE @DATA(IT_RNPAT_VNDAE2).
*--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_RNPAT_VNDAE INDEX 1 INTO DATA(WA_RNPAT_VNDAE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNPAT_VNDAE>-MANDT = 1.
<RNPAT_VNDAE>-DOKAR = 1.
<RNPAT_VNDAE>-DOKNR = 1.
<RNPAT_VNDAE>-DOKVR = 1.
<RNPAT_VNDAE>-DOKTL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNPAT_VNDAE-ENTLEIHER, sy-vline,
  WA_RNPAT_VNDAE-ENTLTYP, sy-vline,
  WA_RNPAT_VNDAE-LEIHDAT, sy-vline,
  WA_RNPAT_VNDAE-LEIZEIT, sy-vline,
  WA_RNPAT_VNDAE-ORGKR, sy-vline,
  WA_RNPAT_VNDAE-ENTZW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNPAT_VNDAE 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_RNPAT_VNDAE 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_RNPAT_VNDAE INTO WA_RNPAT_VNDAE.


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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field STANDORT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNPAT_VNDAE-STANDORT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNPAT_VNDAE-STANDORT.
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_RNPAT_VNDAE_STR, 
MANDT TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
ENTLEIHER TYPE STRING,
ENTLTYP TYPE STRING,
LEIHDAT TYPE STRING,
LEIZEIT TYPE STRING,
ORGKR TYPE STRING,
ENTZW TYPE STRING,
RUEKDAT TYPE STRING,
STATUS TYPE STRING,
ANZMAH TYPE STRING,
ERMAHN TYPE STRING,
ENTTEXT TYPE STRING,
ENTLEND TYPE STRING,
VERANTW TYPE STRING,
LFDDOK TYPE STRING,
ORGFORM TYPE STRING,
PATNR TYPE STRING,
FALNR TYPE STRING,
FALAR TYPE STRING,
ORGFA TYPE STRING,
ORGPF TYPE STRING,
ORGDO TYPE STRING,
STORN TYPE STRING,
MEDOK TYPE STRING,
ARCHIV TYPE STRING,
STANDORT TYPE STRING,
ROLLNO TYPE STRING,
MICROF TYPE STRING,
INFOMR TYPE STRING,
TEMPMR TYPE STRING,
ALBUM TYPE STRING,
MFYEAR TYPE STRING,
REDO_KZ TYPE STRING,
GSCHL TYPE STRING,
NNAME TYPE STRING,
NNAMS TYPE STRING,
VNAME TYPE STRING,
VNAMS TYPE STRING,
TITEL TYPE STRING,
NAMZU TYPE STRING,
VORSW TYPE STRING,
GBDAT TYPE STRING,
EXTNR TYPE STRING,
PATEX TYPE STRING,
LEMAHN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNPAT_VNDAE_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_RNPAT_VNDAE_STR-MANDT sy-vline 
WA_RNPAT_VNDAE_STR-DOKAR sy-vline 
WA_RNPAT_VNDAE_STR-DOKNR sy-vline 
WA_RNPAT_VNDAE_STR-DOKVR sy-vline 
WA_RNPAT_VNDAE_STR-DOKTL sy-vline 
WA_RNPAT_VNDAE_STR-ENTLEIHER sy-vline 
WA_RNPAT_VNDAE_STR-ENTLTYP sy-vline 
WA_RNPAT_VNDAE_STR-LEIHDAT sy-vline 
WA_RNPAT_VNDAE_STR-LEIZEIT sy-vline 
WA_RNPAT_VNDAE_STR-ORGKR sy-vline 
WA_RNPAT_VNDAE_STR-ENTZW sy-vline 
WA_RNPAT_VNDAE_STR-RUEKDAT sy-vline 
WA_RNPAT_VNDAE_STR-STATUS sy-vline 
WA_RNPAT_VNDAE_STR-ANZMAH sy-vline 
WA_RNPAT_VNDAE_STR-ERMAHN sy-vline 
WA_RNPAT_VNDAE_STR-ENTTEXT sy-vline 
WA_RNPAT_VNDAE_STR-ENTLEND sy-vline 
WA_RNPAT_VNDAE_STR-VERANTW sy-vline 
WA_RNPAT_VNDAE_STR-LFDDOK sy-vline 
WA_RNPAT_VNDAE_STR-ORGFORM sy-vline 
WA_RNPAT_VNDAE_STR-PATNR sy-vline 
WA_RNPAT_VNDAE_STR-FALNR sy-vline 
WA_RNPAT_VNDAE_STR-FALAR sy-vline 
WA_RNPAT_VNDAE_STR-ORGFA sy-vline 
WA_RNPAT_VNDAE_STR-ORGPF sy-vline 
WA_RNPAT_VNDAE_STR-ORGDO sy-vline 
WA_RNPAT_VNDAE_STR-STORN sy-vline 
WA_RNPAT_VNDAE_STR-MEDOK sy-vline 
WA_RNPAT_VNDAE_STR-ARCHIV sy-vline 
WA_RNPAT_VNDAE_STR-STANDORT sy-vline 
WA_RNPAT_VNDAE_STR-ROLLNO sy-vline 
WA_RNPAT_VNDAE_STR-MICROF sy-vline 
WA_RNPAT_VNDAE_STR-INFOMR sy-vline 
WA_RNPAT_VNDAE_STR-TEMPMR sy-vline 
WA_RNPAT_VNDAE_STR-ALBUM sy-vline 
WA_RNPAT_VNDAE_STR-MFYEAR sy-vline 
WA_RNPAT_VNDAE_STR-REDO_KZ sy-vline 
WA_RNPAT_VNDAE_STR-GSCHL sy-vline 
WA_RNPAT_VNDAE_STR-NNAME sy-vline 
WA_RNPAT_VNDAE_STR-NNAMS sy-vline 
WA_RNPAT_VNDAE_STR-VNAME sy-vline 
WA_RNPAT_VNDAE_STR-VNAMS sy-vline 
WA_RNPAT_VNDAE_STR-TITEL sy-vline 
WA_RNPAT_VNDAE_STR-NAMZU sy-vline 
WA_RNPAT_VNDAE_STR-VORSW sy-vline 
WA_RNPAT_VNDAE_STR-GBDAT sy-vline 
WA_RNPAT_VNDAE_STR-EXTNR sy-vline 
WA_RNPAT_VNDAE_STR-PATEX sy-vline 
WA_RNPAT_VNDAE_STR-LEMAHN sy-vline      INTO ld_text SEPARATED BY SPACE.

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