ABAP Select data from SAP table RECNVICNSCS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECNVICNSCS
*  INTO TABLE @DATA(IT_RECNVICNSCS2).
*--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_RECNVICNSCS INDEX 1 INTO DATA(WA_RECNVICNSCS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RECNVICNSCS>-MANDT = 1.
<RECNVICNSCS>-INTRENO = 1.
<RECNVICNSCS>-OBJNR = 1.
<RECNVICNSCS>-SNKSL = 1.
<RECNVICNSCS>-DGULTAB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECNVICNSCS-SKOART, sy-vline,
  WA_RECNVICNSCS-ABRVAR, sy-vline,
  WA_RECNVICNSCS-RECNKOART, sy-vline,
  WA_RECNVICNSCS-SABRG, sy-vline,
  WA_RECNVICNSCS-ABREART, sy-vline,
  WA_RECNVICNSCS-RECNPLANDLORD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RECNVICNSCS 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_RECNVICNSCS 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_RECNVICNSCS INTO WA_RECNVICNSCS.


*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 SNKSL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RECNVICNSCS-SNKSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECNVICNSCS-SNKSL.
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_RECNVICNSCS_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
OBJNR TYPE STRING,
SNKSL TYPE STRING,
DGULTAB TYPE STRING,
SKOART TYPE STRING,
ABRVAR TYPE STRING,
RECNKOART TYPE STRING,
SABRG TYPE STRING,
ABREART TYPE STRING,
RECNPLANDLORD TYPE STRING,
AE_INTRENO TYPE STRING,
WAERS TYPE STRING,
MAXCOST1 TYPE STRING,
MAXCOST2 TYPE STRING,
RECNSCSTOAE TYPE STRING,
JSELECTED TYPE STRING,
XUMLEL TYPE STRING,
XKOARTL TYPE STRING,
XABRTXT TYPE STRING,
OBJID TYPE STRING,
OBJTXT TYPE STRING,
BUT_OBJECT TYPE STRING,
OBJID_AE TYPE STRING,
BUT_OBJECT_AE TYPE STRING,
KOARTS TYPE STRING,
NUMKOARTS TYPE STRING,
NKSLS TYPE STRING,
NUMNKSLS TYPE STRING,
OBJID_PP TYPE STRING,
BEWARTS TYPE STRING,
NUMBEWARTS TYPE STRING,
AMV_INTRENO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECNVICNSCS_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_RECNVICNSCS_STR-MANDT sy-vline 
WA_RECNVICNSCS_STR-INTRENO sy-vline 
WA_RECNVICNSCS_STR-OBJNR sy-vline 
WA_RECNVICNSCS_STR-SNKSL sy-vline 
WA_RECNVICNSCS_STR-DGULTAB sy-vline 
WA_RECNVICNSCS_STR-SKOART sy-vline 
WA_RECNVICNSCS_STR-ABRVAR sy-vline 
WA_RECNVICNSCS_STR-RECNKOART sy-vline 
WA_RECNVICNSCS_STR-SABRG sy-vline 
WA_RECNVICNSCS_STR-ABREART sy-vline 
WA_RECNVICNSCS_STR-RECNPLANDLORD sy-vline 
WA_RECNVICNSCS_STR-AE_INTRENO sy-vline 
WA_RECNVICNSCS_STR-WAERS sy-vline 
WA_RECNVICNSCS_STR-MAXCOST1 sy-vline 
WA_RECNVICNSCS_STR-MAXCOST2 sy-vline 
WA_RECNVICNSCS_STR-RECNSCSTOAE sy-vline 
WA_RECNVICNSCS_STR-JSELECTED sy-vline 
WA_RECNVICNSCS_STR-XUMLEL sy-vline 
WA_RECNVICNSCS_STR-XKOARTL sy-vline 
WA_RECNVICNSCS_STR-XABRTXT sy-vline 
WA_RECNVICNSCS_STR-OBJID sy-vline 
WA_RECNVICNSCS_STR-OBJTXT sy-vline 
WA_RECNVICNSCS_STR-BUT_OBJECT sy-vline 
WA_RECNVICNSCS_STR-OBJID_AE sy-vline 
WA_RECNVICNSCS_STR-BUT_OBJECT_AE sy-vline 
WA_RECNVICNSCS_STR-KOARTS sy-vline 
WA_RECNVICNSCS_STR-NUMKOARTS sy-vline 
WA_RECNVICNSCS_STR-NKSLS sy-vline 
WA_RECNVICNSCS_STR-NUMNKSLS sy-vline 
WA_RECNVICNSCS_STR-OBJID_PP sy-vline 
WA_RECNVICNSCS_STR-BEWARTS sy-vline 
WA_RECNVICNSCS_STR-NUMBEWARTS sy-vline 
WA_RECNVICNSCS_STR-AMV_INTRENO sy-vline      INTO ld_text SEPARATED BY SPACE.

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