ABAP Select data from SAP table TABCOMPCOL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TABCOMPCOL
*  INTO TABLE @DATA(IT_TABCOMPCOL2).
*--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_TABCOMPCOL INDEX 1 INTO DATA(WA_TABCOMPCOL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TABCOMPCOL>-CFILLCOLOR = 1.
<TABCOMPCOL>-COLOR = 1.
<TABCOMPCOL>-XRED = 1.
<TABCOMPCOL>-XGREEN = 1.
<TABCOMPCOL>-XBLUE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TABCOMPCOL-XTRANS, sy-vline,
  WA_TABCOMPCOL-XURL, sy-vline,
  WA_TABCOMPCOL-CCLEFT, sy-vline,
  WA_TABCOMPCOL-COLOR, sy-vline,
  WA_TABCOMPCOL-XRED, sy-vline,
  WA_TABCOMPCOL-XGREEN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TABCOMPCOL 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_TABCOMPCOL 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_TABCOMPCOL INTO WA_TABCOMPCOL.


*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_TABCOMPCOL_STR, 
CFILLCOLOR TYPE STRING,
COLOR TYPE STRING,
XRED TYPE STRING,
XGREEN TYPE STRING,
XBLUE TYPE STRING,
XTRANS TYPE STRING,
XURL TYPE STRING,
CCLEFT TYPE STRING,
COLOR TYPE STRING,
XRED TYPE STRING,
XGREEN TYPE STRING,
XBLUE TYPE STRING,
XTRANS TYPE STRING,
XURL TYPE STRING,
CCTOP TYPE STRING,
COLOR TYPE STRING,
XRED TYPE STRING,
XGREEN TYPE STRING,
XBLUE TYPE STRING,
XTRANS TYPE STRING,
XURL TYPE STRING,
CCRIGHT TYPE STRING,
COLOR TYPE STRING,
XRED TYPE STRING,
XGREEN TYPE STRING,
XBLUE TYPE STRING,
XTRANS TYPE STRING,
XURL TYPE STRING,
CCBOTTOM TYPE STRING,
COLOR TYPE STRING,
XRED TYPE STRING,
XGREEN TYPE STRING,
XBLUE TYPE STRING,
XTRANS TYPE STRING,
XURL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TABCOMPCOL_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_TABCOMPCOL_STR-CFILLCOLOR sy-vline 
WA_TABCOMPCOL_STR-COLOR sy-vline 
WA_TABCOMPCOL_STR-XRED sy-vline 
WA_TABCOMPCOL_STR-XGREEN sy-vline 
WA_TABCOMPCOL_STR-XBLUE sy-vline 
WA_TABCOMPCOL_STR-XTRANS sy-vline 
WA_TABCOMPCOL_STR-XURL sy-vline 
WA_TABCOMPCOL_STR-CCLEFT sy-vline 
WA_TABCOMPCOL_STR-COLOR sy-vline 
WA_TABCOMPCOL_STR-XRED sy-vline 
WA_TABCOMPCOL_STR-XGREEN sy-vline 
WA_TABCOMPCOL_STR-XBLUE sy-vline 
WA_TABCOMPCOL_STR-XTRANS sy-vline 
WA_TABCOMPCOL_STR-XURL sy-vline 
WA_TABCOMPCOL_STR-CCTOP sy-vline 
WA_TABCOMPCOL_STR-COLOR sy-vline 
WA_TABCOMPCOL_STR-XRED sy-vline 
WA_TABCOMPCOL_STR-XGREEN sy-vline 
WA_TABCOMPCOL_STR-XBLUE sy-vline 
WA_TABCOMPCOL_STR-XTRANS sy-vline 
WA_TABCOMPCOL_STR-XURL sy-vline 
WA_TABCOMPCOL_STR-CCRIGHT sy-vline 
WA_TABCOMPCOL_STR-COLOR sy-vline 
WA_TABCOMPCOL_STR-XRED sy-vline 
WA_TABCOMPCOL_STR-XGREEN sy-vline 
WA_TABCOMPCOL_STR-XBLUE sy-vline 
WA_TABCOMPCOL_STR-XTRANS sy-vline 
WA_TABCOMPCOL_STR-XURL sy-vline 
WA_TABCOMPCOL_STR-CCBOTTOM sy-vline 
WA_TABCOMPCOL_STR-COLOR sy-vline 
WA_TABCOMPCOL_STR-XRED sy-vline 
WA_TABCOMPCOL_STR-XGREEN sy-vline 
WA_TABCOMPCOL_STR-XBLUE sy-vline 
WA_TABCOMPCOL_STR-XTRANS sy-vline 
WA_TABCOMPCOL_STR-XURL sy-vline      INTO ld_text SEPARATED BY SPACE.

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