ABAP Select data from SAP table DELCON_COMPARE_DET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DELCON_COMPARE_DET
*  INTO TABLE @DATA(IT_DELCON_COMPARE_DET2).
*--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_DELCON_COMPARE_DET INDEX 1 INTO DATA(WA_DELCON_COMPARE_DET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DELCON_COMPARE_DET>-MATNR = 1.
<DELCON_COMPARE_DET>-KDMAT = 1.
<DELCON_COMPARE_DET>-QUANT = 1.
<DELCON_COMPARE_DET>-MEINS = 1.
<DELCON_COMPARE_DET>-XBLNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DELCON_COMPARE_DET-VBELN, sy-vline,
  WA_DELCON_COMPARE_DET-VBELN_LP, sy-vline,
  WA_DELCON_COMPARE_DET-VETYP, sy-vline,
  WA_DELCON_COMPARE_DET-VEHID, sy-vline,
  WA_DELCON_COMPARE_DET-SSPEZ, sy-vline,
  WA_DELCON_COMPARE_DET-KUNAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DELCON_COMPARE_DET 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_DELCON_COMPARE_DET 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_DELCON_COMPARE_DET INTO WA_DELCON_COMPARE_DET.


*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_DELCON_COMPARE_DET-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DELCON_COMPARE_DET-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_DELCON_COMPARE_DET-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DELCON_COMPARE_DET-MEINS.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field KUNAG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DELCON_COMPARE_DET-KUNAG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DELCON_COMPARE_DET-KUNAG.
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_DELCON_COMPARE_DET_STR, 
MATNR TYPE STRING,
KDMAT TYPE STRING,
QUANT TYPE STRING,
MEINS TYPE STRING,
XBLNR TYPE STRING,
VBELN TYPE STRING,
VBELN_LP TYPE STRING,
VETYP TYPE STRING,
VEHID TYPE STRING,
SSPEZ TYPE STRING,
KUNAG TYPE STRING,
KNREF TYPE STRING,
PRODN TYPE STRING,
SEQNR TYPE STRING,
ABLAD TYPE STRING,
FLDPO TYPE STRING,
INKEY TYPE STRING,
ZETYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DELCON_COMPARE_DET_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_DELCON_COMPARE_DET_STR-MATNR sy-vline 
WA_DELCON_COMPARE_DET_STR-KDMAT sy-vline 
WA_DELCON_COMPARE_DET_STR-QUANT sy-vline 
WA_DELCON_COMPARE_DET_STR-MEINS sy-vline 
WA_DELCON_COMPARE_DET_STR-XBLNR sy-vline 
WA_DELCON_COMPARE_DET_STR-VBELN sy-vline 
WA_DELCON_COMPARE_DET_STR-VBELN_LP sy-vline 
WA_DELCON_COMPARE_DET_STR-VETYP sy-vline 
WA_DELCON_COMPARE_DET_STR-VEHID sy-vline 
WA_DELCON_COMPARE_DET_STR-SSPEZ sy-vline 
WA_DELCON_COMPARE_DET_STR-KUNAG sy-vline 
WA_DELCON_COMPARE_DET_STR-KNREF sy-vline 
WA_DELCON_COMPARE_DET_STR-PRODN sy-vline 
WA_DELCON_COMPARE_DET_STR-SEQNR sy-vline 
WA_DELCON_COMPARE_DET_STR-ABLAD sy-vline 
WA_DELCON_COMPARE_DET_STR-FLDPO sy-vline 
WA_DELCON_COMPARE_DET_STR-INKEY sy-vline 
WA_DELCON_COMPARE_DET_STR-ZETYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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