ABAP Select data from SAP table SCOL_REF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SCOL_REF
*  INTO TABLE @DATA(IT_SCOL_REF2).
*--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_SCOL_REF INDEX 1 INTO DATA(WA_SCOL_REF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SCOL_REF>-CLIENT = 1.
<SCOL_REF>-KEY1 = 1.
<SCOL_REF>-KEY2 = 1.
<SCOL_REF>-KEY3 = 1.
<SCOL_REF>-DATA1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SCOL_REF-DATA2, sy-vline,
  WA_SCOL_REF-DATA3, sy-vline,
  WA_SCOL_REF-DATA4, sy-vline,
  WA_SCOL_REF-DATA5, sy-vline,
  WA_SCOL_REF-DATA6, sy-vline,
  WA_SCOL_REF-DATA7, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SCOL_REF 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_SCOL_REF 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_SCOL_REF INTO WA_SCOL_REF.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_SCOL_REF_STR, 
CLIENT TYPE STRING,
KEY1 TYPE STRING,
KEY2 TYPE STRING,
KEY3 TYPE STRING,
DATA1 TYPE STRING,
DATA2 TYPE STRING,
DATA3 TYPE STRING,
DATA4 TYPE STRING,
DATA5 TYPE STRING,
DATA6 TYPE STRING,
DATA7 TYPE STRING,
DATA8 TYPE STRING,
DATA9 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SCOL_REF_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_SCOL_REF_STR-CLIENT sy-vline 
WA_SCOL_REF_STR-KEY1 sy-vline 
WA_SCOL_REF_STR-KEY2 sy-vline 
WA_SCOL_REF_STR-KEY3 sy-vline 
WA_SCOL_REF_STR-DATA1 sy-vline 
WA_SCOL_REF_STR-DATA2 sy-vline 
WA_SCOL_REF_STR-DATA3 sy-vline 
WA_SCOL_REF_STR-DATA4 sy-vline 
WA_SCOL_REF_STR-DATA5 sy-vline 
WA_SCOL_REF_STR-DATA6 sy-vline 
WA_SCOL_REF_STR-DATA7 sy-vline 
WA_SCOL_REF_STR-DATA8 sy-vline 
WA_SCOL_REF_STR-DATA9 sy-vline      INTO ld_text SEPARATED BY SPACE.

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