ABAP Select data from SAP table RC27S into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RC27S 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 RC27S. 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 RC27S 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_RC27S TYPE STANDARD TABLE OF RC27S,
      WA_RC27S TYPE RC27S,
      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: <RC27S> TYPE RC27S.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RC27S.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RC27S
  INTO TABLE IT_RC27S.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RC27S
*  INTO TABLE @DATA(IT_RC27S2).
*--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_RC27S INDEX 1 INTO DATA(WA_RC27S2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RC27S ASSIGNING <RC27S>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RC27S>-AKTYP = 1.
<RC27S>-AKTYP_PIC = 1.
<RC27S>-BLDGR = 1.
<RC27S>-PANEL = 1.
<RC27S>-POSGR = 1.

ENDLOOP.

LOOP AT IT_RC27S INTO WA_RC27S.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RC27S-KOPGR, sy-vline,
  WA_RC27S-MPOOL, sy-vline,
  WA_RC27S-OK_CODE, sy-vline,
  WA_RC27S-SPRAS, sy-vline,
  WA_RC27S-AENNR, sy-vline,
  WA_RC27S-STTAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RC27S 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_RC27S 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_RC27S INTO WA_RC27S.


*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 ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RC27S-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC27S-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RC27S-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC27S-AENNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR_MAX
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RC27S-VORNR_MAX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC27S-VORNR_MAX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field APLFL_MAX
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RC27S-APLFL_MAX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC27S-APLFL_MAX.
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_RC27S_STR, 
AKTYP TYPE STRING,
AKTYP_PIC TYPE STRING,
BLDGR TYPE STRING,
PANEL TYPE STRING,
POSGR TYPE STRING,
KOPGR TYPE STRING,
MPOOL TYPE STRING,
OK_CODE TYPE STRING,
SPRAS TYPE STRING,
AENNR TYPE STRING,
STTAG TYPE STRING,
FLG_CHECK TYPE STRING,
FLG_DB_R TYPE STRING,
FLG_DATUV TYPE STRING,
FLG_DARK TYPE STRING,
FLG_DARK_F TYPE STRING,
FLG_ESC TYPE STRING,
FLG_ESC_LO TYPE STRING,
FLG_FLG_OK TYPE STRING,
FLG_LEAVE TYPE STRING,
FLG_SHOW TYPE STRING,
FLG_SKIP TYPE STRING,
FLG_TXT TYPE STRING,
FLG_CALLED TYPE STRING,
CUA_TITLE TYPE STRING,
CUA_STATUS TYPE STRING,
AOB_KEY TYPE STRING,
FLG_AOBAN TYPE STRING,
FLG_TERM TYPE STRING,
FLG_TERDIA TYPE STRING,
FLG_SICHT TYPE STRING,
FLG_GRAPH TYPE STRING,
FLG_PTV TYPE STRING,
FLG_CLAS TYPE STRING,
FLG_ST_CHG TYPE STRING,
FLG_CL_CHG TYPE STRING,
FLG_EXTERN TYPE STRING,
FLG_COLORD_EXPAND TYPE STRING,
FLG_AKTYPD TYPE STRING,
TCODE TYPE STRING,
SICHT TYPE STRING,
FLG_RP_ACT TYPE STRING,
FLG_OP_PH TYPE STRING,
VORNR_MAX TYPE STRING,
FLG_INPLOT TYPE STRING,
FLG_SERV TYPE STRING,
REF_BOM_CR TYPE STRING,
APLFL_MAX TYPE STRING,
FLG_DETAIL TYPE STRING,
VSNMR TYPE STRING,
EL_LIST TYPE STRING,
FLG_OLD_DYNP TYPE STRING,
Q_PLN_FEAT TYPE STRING,
FLG_FLEX_DET TYPE STRING,
ENQ_ACT TYPE STRING,
CALL_VIA_RFC TYPE STRING,
FLG_REL_MSPT TYPE STRING,
MILL_OC_ORD_FLAG TYPE STRING,
MILL_OC_SCR_FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RC27S_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_RC27S_STR-AKTYP sy-vline 
WA_RC27S_STR-AKTYP_PIC sy-vline 
WA_RC27S_STR-BLDGR sy-vline 
WA_RC27S_STR-PANEL sy-vline 
WA_RC27S_STR-POSGR sy-vline 
WA_RC27S_STR-KOPGR sy-vline 
WA_RC27S_STR-MPOOL sy-vline 
WA_RC27S_STR-OK_CODE sy-vline 
WA_RC27S_STR-SPRAS sy-vline 
WA_RC27S_STR-AENNR sy-vline 
WA_RC27S_STR-STTAG sy-vline 
WA_RC27S_STR-FLG_CHECK sy-vline 
WA_RC27S_STR-FLG_DB_R sy-vline 
WA_RC27S_STR-FLG_DATUV sy-vline 
WA_RC27S_STR-FLG_DARK sy-vline 
WA_RC27S_STR-FLG_DARK_F sy-vline 
WA_RC27S_STR-FLG_ESC sy-vline 
WA_RC27S_STR-FLG_ESC_LO sy-vline 
WA_RC27S_STR-FLG_FLG_OK sy-vline 
WA_RC27S_STR-FLG_LEAVE sy-vline 
WA_RC27S_STR-FLG_SHOW sy-vline 
WA_RC27S_STR-FLG_SKIP sy-vline 
WA_RC27S_STR-FLG_TXT sy-vline 
WA_RC27S_STR-FLG_CALLED sy-vline 
WA_RC27S_STR-CUA_TITLE sy-vline 
WA_RC27S_STR-CUA_STATUS sy-vline 
WA_RC27S_STR-AOB_KEY sy-vline 
WA_RC27S_STR-FLG_AOBAN sy-vline 
WA_RC27S_STR-FLG_TERM sy-vline 
WA_RC27S_STR-FLG_TERDIA sy-vline 
WA_RC27S_STR-FLG_SICHT sy-vline 
WA_RC27S_STR-FLG_GRAPH sy-vline 
WA_RC27S_STR-FLG_PTV sy-vline 
WA_RC27S_STR-FLG_CLAS sy-vline 
WA_RC27S_STR-FLG_ST_CHG sy-vline 
WA_RC27S_STR-FLG_CL_CHG sy-vline 
WA_RC27S_STR-FLG_EXTERN sy-vline 
WA_RC27S_STR-FLG_COLORD_EXPAND sy-vline 
WA_RC27S_STR-FLG_AKTYPD sy-vline 
WA_RC27S_STR-TCODE sy-vline 
WA_RC27S_STR-SICHT sy-vline 
WA_RC27S_STR-FLG_RP_ACT sy-vline 
WA_RC27S_STR-FLG_OP_PH sy-vline 
WA_RC27S_STR-VORNR_MAX sy-vline 
WA_RC27S_STR-FLG_INPLOT sy-vline 
WA_RC27S_STR-FLG_SERV sy-vline 
WA_RC27S_STR-REF_BOM_CR sy-vline 
WA_RC27S_STR-APLFL_MAX sy-vline 
WA_RC27S_STR-FLG_DETAIL sy-vline 
WA_RC27S_STR-VSNMR sy-vline 
WA_RC27S_STR-EL_LIST sy-vline 
WA_RC27S_STR-FLG_OLD_DYNP sy-vline 
WA_RC27S_STR-Q_PLN_FEAT sy-vline 
WA_RC27S_STR-FLG_FLEX_DET sy-vline 
WA_RC27S_STR-ENQ_ACT sy-vline 
WA_RC27S_STR-CALL_VIA_RFC sy-vline 
WA_RC27S_STR-FLG_REL_MSPT sy-vline 
WA_RC27S_STR-MILL_OC_ORD_FLAG sy-vline 
WA_RC27S_STR-MILL_OC_SCR_FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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