ABAP Select data from SAP table COO0DHFRE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP COO0DHFRE 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 COO0DHFRE. 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 COO0DHFRE 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_COO0DHFRE TYPE STANDARD TABLE OF COO0DHFRE,
      WA_COO0DHFRE TYPE COO0DHFRE,
      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: <COO0DHFRE> TYPE COO0DHFRE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_COO0DHFRE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM COO0DHFRE
  INTO TABLE IT_COO0DHFRE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COO0DHFRE
*  INTO TABLE @DATA(IT_COO0DHFRE2).
*--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_COO0DHFRE INDEX 1 INTO DATA(WA_COO0DHFRE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_COO0DHFRE ASSIGNING <COO0DHFRE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COO0DHFRE>-OBJNR = 1.
<COO0DHFRE>-BUKRS = 1.
<COO0DHFRE>-SWENR = 1.
<COO0DHFRE>-SGENR = 1.
<COO0DHFRE>-SGRNR = 1.

ENDLOOP.

LOOP AT IT_COO0DHFRE INTO WA_COO0DHFRE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COO0DHFRE-SMENR, sy-vline,
  WA_COO0DHFRE-SMIVE, sy-vline,
  WA_COO0DHFRE-SNKSL, sy-vline,
  WA_COO0DHFRE-SEMPSL, sy-vline,
  WA_COO0DHFRE-DABRZ, sy-vline,
  WA_COO0DHFRE-SVWNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COO0DHFRE 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_COO0DHFRE 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_COO0DHFRE INTO WA_COO0DHFRE.


*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_COO0DHFRE_STR, 
OBJNR TYPE STRING,
BUKRS TYPE STRING,
SWENR TYPE STRING,
SGENR TYPE STRING,
SGRNR TYPE STRING,
SMENR TYPE STRING,
SMIVE TYPE STRING,
SNKSL TYPE STRING,
SEMPSL TYPE STRING,
DABRZ TYPE STRING,
SVWNR TYPE STRING,
RECNNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COO0DHFRE_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_COO0DHFRE_STR-OBJNR sy-vline 
WA_COO0DHFRE_STR-BUKRS sy-vline 
WA_COO0DHFRE_STR-SWENR sy-vline 
WA_COO0DHFRE_STR-SGENR sy-vline 
WA_COO0DHFRE_STR-SGRNR sy-vline 
WA_COO0DHFRE_STR-SMENR sy-vline 
WA_COO0DHFRE_STR-SMIVE sy-vline 
WA_COO0DHFRE_STR-SNKSL sy-vline 
WA_COO0DHFRE_STR-SEMPSL sy-vline 
WA_COO0DHFRE_STR-DABRZ sy-vline 
WA_COO0DHFRE_STR-SVWNR sy-vline 
WA_COO0DHFRE_STR-RECNNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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