ABAP Select data from SAP table RC62C into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RC62C 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 RC62C. 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 RC62C 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_RC62C TYPE STANDARD TABLE OF RC62C,
      WA_RC62C TYPE RC62C,
      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: <RC62C> TYPE RC62C.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RC62C.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RC62C
  INTO TABLE IT_RC62C.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RC62C
*  INTO TABLE @DATA(IT_RC62C2).
*--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_RC62C INDEX 1 INTO DATA(WA_RC62C2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RC62C ASSIGNING <RC62C>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RC62C>-KDAUF = 1.
<RC62C>-KDPOS = 1.
<RC62C>-REFNR = 1.
<RC62C>-COPY_OPR = 1.
<RC62C>-COPY_MAT = 1.

ENDLOOP.

LOOP AT IT_RC62C INTO WA_RC62C.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RC62C-COPY_MLS, sy-vline,
  WA_RC62C-COPY_PRT, sy-vline,
  WA_RC62C-COPY_PST, sy-vline,
  WA_RC62C-COPY_AOB, sy-vline,
  WA_RC62C-COPY_PV, sy-vline,
  WA_RC62C-COPY_SM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RC62C 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_RC62C 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_RC62C INTO WA_RC62C.


*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 KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RC62C-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC62C-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RC62C-REFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC62C-REFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field REFVORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RC62C-REFVORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RC62C-REFVORNR.
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_RC62C_STR, 
KDAUF TYPE STRING,
KDPOS TYPE STRING,
REFNR TYPE STRING,
COPY_OPR TYPE STRING,
COPY_MAT TYPE STRING,
COPY_MLS TYPE STRING,
COPY_PRT TYPE STRING,
COPY_PST TYPE STRING,
COPY_AOB TYPE STRING,
COPY_PV TYPE STRING,
COPY_SM TYPE STRING,
COPY_PSP TYPE STRING,
COPY_PCT TYPE STRING,
COPY_GSB TYPE STRING,
COPY_DEL TYPE STRING,
COPY_ANR TYPE STRING,
VSNMR TYPE STRING,
COPY_ASSG TYPE STRING,
COPY_DOCL TYPE STRING,
COPY_SM_OLC TYPE STRING,
COPY_SM_PM TYPE STRING,
COPY_DESCR TYPE STRING,
REFVORNR TYPE STRING,
FOLLOW_UP_ORDER TYPE STRING,
COPY_OANI TYPE STRING,
COPY_GEOM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RC62C_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_RC62C_STR-KDAUF sy-vline 
WA_RC62C_STR-KDPOS sy-vline 
WA_RC62C_STR-REFNR sy-vline 
WA_RC62C_STR-COPY_OPR sy-vline 
WA_RC62C_STR-COPY_MAT sy-vline 
WA_RC62C_STR-COPY_MLS sy-vline 
WA_RC62C_STR-COPY_PRT sy-vline 
WA_RC62C_STR-COPY_PST sy-vline 
WA_RC62C_STR-COPY_AOB sy-vline 
WA_RC62C_STR-COPY_PV sy-vline 
WA_RC62C_STR-COPY_SM sy-vline 
WA_RC62C_STR-COPY_PSP sy-vline 
WA_RC62C_STR-COPY_PCT sy-vline 
WA_RC62C_STR-COPY_GSB sy-vline 
WA_RC62C_STR-COPY_DEL sy-vline 
WA_RC62C_STR-COPY_ANR sy-vline 
WA_RC62C_STR-VSNMR sy-vline 
WA_RC62C_STR-COPY_ASSG sy-vline 
WA_RC62C_STR-COPY_DOCL sy-vline 
WA_RC62C_STR-COPY_SM_OLC sy-vline 
WA_RC62C_STR-COPY_SM_PM sy-vline 
WA_RC62C_STR-COPY_DESCR sy-vline 
WA_RC62C_STR-REFVORNR sy-vline 
WA_RC62C_STR-FOLLOW_UP_ORDER sy-vline 
WA_RC62C_STR-COPY_OANI sy-vline 
WA_RC62C_STR-COPY_GEOM sy-vline      INTO ld_text SEPARATED BY SPACE.

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