ABAP Select data from SAP table RCM01 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 RCM01 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 RCM01. 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 RCM01 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_RCM01 TYPE STANDARD TABLE OF RCM01,
      WA_RCM01 TYPE RCM01,
      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: <RCM01> TYPE RCM01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RCM01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RCM01
  INTO TABLE IT_RCM01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCM01
*  INTO TABLE @DATA(IT_RCM012).
*--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_RCM01 INDEX 1 INTO DATA(WA_RCM012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RCM01 ASSIGNING <RCM01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCM01>-MAX_ZUONR = 1.
<RCM01>-INDEX_PLMZ = 1.
<RCM01>-INDEX_DT = 1.
<RCM01>-MATNR = 1.
<RCM01>-WERKS = 1.

ENDLOOP.

LOOP AT IT_RCM01 INTO WA_RCM01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCM01-MAKTX, sy-vline,
  WA_RCM01-PLNTY, sy-vline,
  WA_RCM01-PLNNR, sy-vline,
  WA_RCM01-PLNAL, sy-vline,
  WA_RCM01-PLNFL, sy-vline,
  WA_RCM01-PLNKN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCM01 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_RCM01 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_RCM01 INTO WA_RCM01.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RCM01-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCM01-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCM01-PLNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCM01-PLNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCM01-PLNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCM01-PLNAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNFL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCM01-PLNFL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCM01-PLNFL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCM01-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCM01-AENNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RCM01-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCM01-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCM01-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCM01-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RCM01-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCM01-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field REVLV
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RCM01-REVLV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCM01-REVLV.
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_RCM01_STR, 
MAX_ZUONR TYPE STRING,
INDEX_PLMZ TYPE STRING,
INDEX_DT TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
MAKTX TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
PLNFL TYPE STRING,
PLNKN TYPE STRING,
DATUV TYPE STRING,
FLG_ROUT TYPE STRING,
FLG_BOM TYPE STRING,
AENNR TYPE STRING,
TECHV TYPE STRING,
CONTENT TYPE STRING,
TRTYP TYPE STRING,
HEAD TYPE STRING,
LINE_BOM TYPE STRING,
LINE_PROV TYPE STRING,
SORTM TYPE STRING,
VORNR TYPE STRING,
FLG_SEL TYPE STRING,
LINE_ROUT TYPE STRING,
HEAD_ROUT TYPE STRING,
FLG_ALLOC TYPE STRING,
ROUT_BTAB TYPE STRING,
BOM_BTAB TYPE STRING,
FLG_GEN TYPE STRING,
HEADLINE TYPE STRING,
FLG_DETAIL TYPE STRING,
FLG_DTAB TYPE STRING,
FLG_PROV TYPE STRING,
BLDGR TYPE STRING,
PANEL TYPE STRING,
NO_ENTRIES TYPE STRING,
TRTYP_BOM TYPE STRING,
INDEX_PICK TYPE STRING,
KEY_WORD TYPE STRING,
VERID TYPE STRING,
TEXT1 TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
PSPNR TYPE STRING,
REVLV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCM01_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_RCM01_STR-MAX_ZUONR sy-vline 
WA_RCM01_STR-INDEX_PLMZ sy-vline 
WA_RCM01_STR-INDEX_DT sy-vline 
WA_RCM01_STR-MATNR sy-vline 
WA_RCM01_STR-WERKS sy-vline 
WA_RCM01_STR-MAKTX sy-vline 
WA_RCM01_STR-PLNTY sy-vline 
WA_RCM01_STR-PLNNR sy-vline 
WA_RCM01_STR-PLNAL sy-vline 
WA_RCM01_STR-PLNFL sy-vline 
WA_RCM01_STR-PLNKN sy-vline 
WA_RCM01_STR-DATUV sy-vline 
WA_RCM01_STR-FLG_ROUT sy-vline 
WA_RCM01_STR-FLG_BOM sy-vline 
WA_RCM01_STR-AENNR sy-vline 
WA_RCM01_STR-TECHV sy-vline 
WA_RCM01_STR-CONTENT sy-vline 
WA_RCM01_STR-TRTYP sy-vline 
WA_RCM01_STR-HEAD sy-vline 
WA_RCM01_STR-LINE_BOM sy-vline 
WA_RCM01_STR-LINE_PROV sy-vline 
WA_RCM01_STR-SORTM sy-vline 
WA_RCM01_STR-VORNR sy-vline 
WA_RCM01_STR-FLG_SEL sy-vline 
WA_RCM01_STR-LINE_ROUT sy-vline 
WA_RCM01_STR-HEAD_ROUT sy-vline 
WA_RCM01_STR-FLG_ALLOC sy-vline 
WA_RCM01_STR-ROUT_BTAB sy-vline 
WA_RCM01_STR-BOM_BTAB sy-vline 
WA_RCM01_STR-FLG_GEN sy-vline 
WA_RCM01_STR-HEADLINE sy-vline 
WA_RCM01_STR-FLG_DETAIL sy-vline 
WA_RCM01_STR-FLG_DTAB sy-vline 
WA_RCM01_STR-FLG_PROV sy-vline 
WA_RCM01_STR-BLDGR sy-vline 
WA_RCM01_STR-PANEL sy-vline 
WA_RCM01_STR-NO_ENTRIES sy-vline 
WA_RCM01_STR-TRTYP_BOM sy-vline 
WA_RCM01_STR-INDEX_PICK sy-vline 
WA_RCM01_STR-KEY_WORD sy-vline 
WA_RCM01_STR-VERID sy-vline 
WA_RCM01_STR-TEXT1 sy-vline 
WA_RCM01_STR-VBELN sy-vline 
WA_RCM01_STR-POSNR sy-vline 
WA_RCM01_STR-PSPNR sy-vline 
WA_RCM01_STR-REVLV sy-vline      INTO ld_text SEPARATED BY SPACE.

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