ABAP Select data from SAP table RCNIP01 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RCNIP01 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 RCNIP01. 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 RCNIP01 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_RCNIP01 TYPE STANDARD TABLE OF RCNIP01,
      WA_RCNIP01 TYPE RCNIP01,
      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: <RCNIP01> TYPE RCNIP01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RCNIP01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RCNIP01
  INTO TABLE IT_RCNIP01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCNIP01
*  INTO TABLE @DATA(IT_RCNIP012).
*--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_RCNIP01 INDEX 1 INTO DATA(WA_RCNIP012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RCNIP01 ASSIGNING <RCNIP01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCNIP01>-PRONR = 1.
<RCNIP01>-PSPID = 1.
<RCNIP01>-PSPNR_LOW = 1.
<RCNIP01>-POSID_LOW = 1.
<RCNIP01>-PSPNR_HIGH = 1.

ENDLOOP.

LOOP AT IT_RCNIP01 INTO WA_RCNIP01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCNIP01-VBELN, sy-vline,
  WA_RCNIP01-POSNR, sy-vline,
  WA_RCNIP01-MATNR, sy-vline,
  WA_RCNIP01-BDMNG, sy-vline,
  WA_RCNIP01-WERKS, sy-vline,
  WA_RCNIP01-MEHRS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCNIP01 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_RCNIP01 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_RCNIP01 INTO WA_RCNIP01.


*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 KONPD, internal->external for field PRONR
CALL FUNCTION 'CONVERSION_EXIT_KONPD_OUTPUT'
  EXPORTING
    input =                      WA_RCNIP01-PRONR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCNIP01-PRONR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PSPID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_RCNIP01-PSPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCNIP01-PSPID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPNR_LOW
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RCNIP01-PSPNR_LOW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCNIP01-PSPNR_LOW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field POSID_LOW
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_RCNIP01-POSID_LOW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCNIP01-POSID_LOW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPNR_HIGH
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RCNIP01-PSPNR_HIGH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCNIP01-PSPNR_HIGH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCNIP01-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCNIP01-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RCNIP01-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCNIP01-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCNIP01-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCNIP01-AENNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field STLNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RCNIP01-STLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCNIP01-STLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STLAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCNIP01-STLAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCNIP01-STLAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NPLNR_LOW
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCNIP01-NPLNR_LOW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCNIP01-NPLNR_LOW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NPLNR_HIGH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCNIP01-NPLNR_HIGH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCNIP01-NPLNR_HIGH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN_BOM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCNIP01-VBELN_BOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCNIP01-VBELN_BOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPNR_BOM
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RCNIP01-PSPNR_BOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCNIP01-PSPNR_BOM.
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_RCNIP01_STR, 
PRONR TYPE STRING,
PSPID TYPE STRING,
PSPNR_LOW TYPE STRING,
POSID_LOW TYPE STRING,
PSPNR_HIGH TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
MATNR TYPE STRING,
BDMNG TYPE STRING,
WERKS TYPE STRING,
MEHRS TYPE STRING,
FLG_EXT TYPE STRING,
FLG_ALL TYPE STRING,
FLG_PRE TYPE STRING,
FLG_MAT TYPE STRING,
FLG_SALES TYPE STRING,
FLG_PROJECT TYPE STRING,
FLG_UNIQUE TYPE STRING,
FLG_AENNR TYPE STRING,
CAPID TYPE STRING,
STLAN TYPE STRING,
MAKTX TYPE STRING,
AENNR TYPE STRING,
STTAG TYPE STRING,
NODLG TYPE STRING,
PROT_AB TYPE STRING,
STLTY TYPE STRING,
STLNR TYPE STRING,
STLAL TYPE STRING,
KOKRS TYPE STRING,
NPLNR_LOW TYPE STRING,
NPLNR_HIGH TYPE STRING,
PROFILE TYPE STRING,
AV_CHECK TYPE STRING,
CUOBJ TYPE STRING,
TECHS TYPE STRING,
SERNR TYPE STRING,
VBELN_BOM TYPE STRING,
POSNR_BOM TYPE STRING,
PSPNR_BOM TYPE STRING,
FLG_MRPOFFSET TYPE STRING,
MRPOFFSET TYPE STRING,
AEFRK TYPE STRING,
AEFRP TYPE STRING,
AEFRF TYPE STRING,
AEFRS TYPE STRING,
STPST TYPE STRING,
FLG_ALTVO TYPE STRING,
BOM_VERSN TYPE STRING,
FLAG_VERSN TYPE STRING,
PROCESSING_MODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCNIP01_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_RCNIP01_STR-PRONR sy-vline 
WA_RCNIP01_STR-PSPID sy-vline 
WA_RCNIP01_STR-PSPNR_LOW sy-vline 
WA_RCNIP01_STR-POSID_LOW sy-vline 
WA_RCNIP01_STR-PSPNR_HIGH sy-vline 
WA_RCNIP01_STR-VBELN sy-vline 
WA_RCNIP01_STR-POSNR sy-vline 
WA_RCNIP01_STR-MATNR sy-vline 
WA_RCNIP01_STR-BDMNG sy-vline 
WA_RCNIP01_STR-WERKS sy-vline 
WA_RCNIP01_STR-MEHRS sy-vline 
WA_RCNIP01_STR-FLG_EXT sy-vline 
WA_RCNIP01_STR-FLG_ALL sy-vline 
WA_RCNIP01_STR-FLG_PRE sy-vline 
WA_RCNIP01_STR-FLG_MAT sy-vline 
WA_RCNIP01_STR-FLG_SALES sy-vline 
WA_RCNIP01_STR-FLG_PROJECT sy-vline 
WA_RCNIP01_STR-FLG_UNIQUE sy-vline 
WA_RCNIP01_STR-FLG_AENNR sy-vline 
WA_RCNIP01_STR-CAPID sy-vline 
WA_RCNIP01_STR-STLAN sy-vline 
WA_RCNIP01_STR-MAKTX sy-vline 
WA_RCNIP01_STR-AENNR sy-vline 
WA_RCNIP01_STR-STTAG sy-vline 
WA_RCNIP01_STR-NODLG sy-vline 
WA_RCNIP01_STR-PROT_AB sy-vline 
WA_RCNIP01_STR-STLTY sy-vline 
WA_RCNIP01_STR-STLNR sy-vline 
WA_RCNIP01_STR-STLAL sy-vline 
WA_RCNIP01_STR-KOKRS sy-vline 
WA_RCNIP01_STR-NPLNR_LOW sy-vline 
WA_RCNIP01_STR-NPLNR_HIGH sy-vline 
WA_RCNIP01_STR-PROFILE sy-vline 
WA_RCNIP01_STR-AV_CHECK sy-vline 
WA_RCNIP01_STR-CUOBJ sy-vline 
WA_RCNIP01_STR-TECHS sy-vline 
WA_RCNIP01_STR-SERNR sy-vline 
WA_RCNIP01_STR-VBELN_BOM sy-vline 
WA_RCNIP01_STR-POSNR_BOM sy-vline 
WA_RCNIP01_STR-PSPNR_BOM sy-vline 
WA_RCNIP01_STR-FLG_MRPOFFSET sy-vline 
WA_RCNIP01_STR-MRPOFFSET sy-vline 
WA_RCNIP01_STR-AEFRK sy-vline 
WA_RCNIP01_STR-AEFRP sy-vline 
WA_RCNIP01_STR-AEFRF sy-vline 
WA_RCNIP01_STR-AEFRS sy-vline 
WA_RCNIP01_STR-STPST sy-vline 
WA_RCNIP01_STR-FLG_ALTVO sy-vline 
WA_RCNIP01_STR-BOM_VERSN sy-vline 
WA_RCNIP01_STR-FLAG_VERSN sy-vline 
WA_RCNIP01_STR-PROCESSING_MODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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