ABAP Select data from SAP table RN1PO_NICP_OP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN1PO_NICP_OP 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 RN1PO_NICP_OP. 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 RN1PO_NICP_OP 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_RN1PO_NICP_OP TYPE STANDARD TABLE OF RN1PO_NICP_OP,
      WA_RN1PO_NICP_OP TYPE RN1PO_NICP_OP,
      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: <RN1PO_NICP_OP> TYPE RN1PO_NICP_OP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN1PO_NICP_OP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN1PO_NICP_OP
  INTO TABLE IT_RN1PO_NICP_OP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN1PO_NICP_OP
*  INTO TABLE @DATA(IT_RN1PO_NICP_OP2).
*--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_RN1PO_NICP_OP INDEX 1 INTO DATA(WA_RN1PO_NICP_OP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN1PO_NICP_OP ASSIGNING <RN1PO_NICP_OP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN1PO_NICP_OP>-MANDT = 1.
<RN1PO_NICP_OP>-LNRIC = 1.
<RN1PO_NICP_OP>-LFDBEW = 1.
<RN1PO_NICP_OP>-ICPMK = 1.
<RN1PO_NICP_OP>-ICPML = 1.

ENDLOOP.

LOOP AT IT_RN1PO_NICP_OP INTO WA_RN1PO_NICP_OP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN1PO_NICP_OP-ICPHC, sy-vline,
  WA_RN1PO_NICP_OP-ANZOP, sy-vline,
  WA_RN1PO_NICP_OP-BGDOP, sy-vline,
  WA_RN1PO_NICP_OP-BZTOP, sy-vline,
  WA_RN1PO_NICP_OP-EZTOP, sy-vline,
  WA_RN1PO_NICP_OP-LSLOK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN1PO_NICP_OP 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_RN1PO_NICP_OP 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_RN1PO_NICP_OP INTO WA_RN1PO_NICP_OP.


*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 LNRIC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_NICP_OP-LNRIC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_NICP_OP-LNRIC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ICPMK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_NICP_OP-ICPMK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_NICP_OP-ICPMK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ICPML
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_NICP_OP-ICPML
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_NICP_OP-ICPML.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LSLOK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_NICP_OP-LSLOK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_NICP_OP-LSLOK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field IDENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_NICP_OP-IDENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_NICP_OP-IDENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field OPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_NICP_OP-OPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_NICP_OP-OPART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_NICP_OP-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_NICP_OP-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_NICP_OP-FALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_NICP_OP-FALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field BEMKZ
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_NICP_OP-BEMKZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_NICP_OP-BEMKZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGFA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_NICP_OP-ORGFA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_NICP_OP-ORGFA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGPF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_NICP_OP-ORGPF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_NICP_OP-ORGPF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_NICP_OP-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_NICP_OP-UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LNRIC_REF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_NICP_OP-LNRIC_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_NICP_OP-LNRIC_REF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LNRLM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1PO_NICP_OP-LNRLM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1PO_NICP_OP-LNRLM.
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_RN1PO_NICP_OP_STR, 
MANDT TYPE STRING,
LNRIC TYPE STRING,
LFDBEW TYPE STRING,
ICPMK TYPE STRING,
ICPML TYPE STRING,
ICPHC TYPE STRING,
ANZOP TYPE STRING,
BGDOP TYPE STRING,
BZTOP TYPE STRING,
EZTOP TYPE STRING,
LSLOK TYPE STRING,
IDENT TYPE STRING,
OPART TYPE STRING,
UPDAT TYPE STRING,
UPUSR TYPE STRING,
STORN TYPE STRING,
STUSR TYPE STRING,
STDAT TYPE STRING,
TCODE TYPE STRING,
EINRI TYPE STRING,
FALNR TYPE STRING,
BTEXT TYPE STRING,
EVENT TYPE STRING,
OBJCT TYPE STRING,
DRG_SEQNO TYPE STRING,
DRG_CATEGORY TYPE STRING,
DRG_RELEVANT TYPE STRING,
BEMKZ TYPE STRING,
ORGFA TYPE STRING,
ORGPF TYPE STRING,
ENDOP TYPE STRING,
PRTYP TYPE STRING,
EVTUP TYPE STRING,
OBJUP TYPE STRING,
TIMESTAMP TYPE STRING,
QUANTITY TYPE STRING,
UNIT TYPE STRING,
LNRIC_REF TYPE STRING,
LNRLM TYPE STRING,
DRG_IMPACT TYPE STRING,
CCL TYPE STRING,
OPLEBSPEN TYPE STRING,
LFDNR TYPE STRING,
LFDNR_NEBEN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN1PO_NICP_OP_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_RN1PO_NICP_OP_STR-MANDT sy-vline 
WA_RN1PO_NICP_OP_STR-LNRIC sy-vline 
WA_RN1PO_NICP_OP_STR-LFDBEW sy-vline 
WA_RN1PO_NICP_OP_STR-ICPMK sy-vline 
WA_RN1PO_NICP_OP_STR-ICPML sy-vline 
WA_RN1PO_NICP_OP_STR-ICPHC sy-vline 
WA_RN1PO_NICP_OP_STR-ANZOP sy-vline 
WA_RN1PO_NICP_OP_STR-BGDOP sy-vline 
WA_RN1PO_NICP_OP_STR-BZTOP sy-vline 
WA_RN1PO_NICP_OP_STR-EZTOP sy-vline 
WA_RN1PO_NICP_OP_STR-LSLOK sy-vline 
WA_RN1PO_NICP_OP_STR-IDENT sy-vline 
WA_RN1PO_NICP_OP_STR-OPART sy-vline 
WA_RN1PO_NICP_OP_STR-UPDAT sy-vline 
WA_RN1PO_NICP_OP_STR-UPUSR sy-vline 
WA_RN1PO_NICP_OP_STR-STORN sy-vline 
WA_RN1PO_NICP_OP_STR-STUSR sy-vline 
WA_RN1PO_NICP_OP_STR-STDAT sy-vline 
WA_RN1PO_NICP_OP_STR-TCODE sy-vline 
WA_RN1PO_NICP_OP_STR-EINRI sy-vline 
WA_RN1PO_NICP_OP_STR-FALNR sy-vline 
WA_RN1PO_NICP_OP_STR-BTEXT sy-vline 
WA_RN1PO_NICP_OP_STR-EVENT sy-vline 
WA_RN1PO_NICP_OP_STR-OBJCT sy-vline 
WA_RN1PO_NICP_OP_STR-DRG_SEQNO sy-vline 
WA_RN1PO_NICP_OP_STR-DRG_CATEGORY sy-vline 
WA_RN1PO_NICP_OP_STR-DRG_RELEVANT sy-vline 
WA_RN1PO_NICP_OP_STR-BEMKZ sy-vline 
WA_RN1PO_NICP_OP_STR-ORGFA sy-vline 
WA_RN1PO_NICP_OP_STR-ORGPF sy-vline 
WA_RN1PO_NICP_OP_STR-ENDOP sy-vline 
WA_RN1PO_NICP_OP_STR-PRTYP sy-vline 
WA_RN1PO_NICP_OP_STR-EVTUP sy-vline 
WA_RN1PO_NICP_OP_STR-OBJUP sy-vline 
WA_RN1PO_NICP_OP_STR-TIMESTAMP sy-vline 
WA_RN1PO_NICP_OP_STR-QUANTITY sy-vline 
WA_RN1PO_NICP_OP_STR-UNIT sy-vline 
WA_RN1PO_NICP_OP_STR-LNRIC_REF sy-vline 
WA_RN1PO_NICP_OP_STR-LNRLM sy-vline 
WA_RN1PO_NICP_OP_STR-DRG_IMPACT sy-vline 
WA_RN1PO_NICP_OP_STR-CCL sy-vline 
WA_RN1PO_NICP_OP_STR-OPLEBSPEN sy-vline 
WA_RN1PO_NICP_OP_STR-LFDNR sy-vline 
WA_RN1PO_NICP_OP_STR-LFDNR_NEBEN sy-vline      INTO ld_text SEPARATED BY SPACE.

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