ABAP Select data from SAP table IDMXDFCERT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDMXDFCERT
*  INTO TABLE @DATA(IT_IDMXDFCERT2).
*--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_IDMXDFCERT INDEX 1 INTO DATA(WA_IDMXDFCERT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDMXDFCERT>-BUKRS = 1.
<IDMXDFCERT>-BELNR = 1.
<IDMXDFCERT>-STMD2 = 1.
<IDMXDFCERT>-ZBELN = 1.
<IDMXDFCERT>-KBETR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDMXDFCERT-HWBTR, sy-vline,
  WA_IDMXDFCERT-HZBET, sy-vline,
  WA_IDMXDFCERT-HWSTE, sy-vline,
  WA_IDMXDFCERT-KUNNR, sy-vline,
  WA_IDMXDFCERT-CNAME1, sy-vline,
  WA_IDMXDFCERT-STCEG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDMXDFCERT 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_IDMXDFCERT 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_IDMXDFCERT INTO WA_IDMXDFCERT.


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

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

*Conversion exit AC112, internal->external for field KBETR
CALL FUNCTION 'CONVERSION_EXIT_AC112_OUTPUT'
  EXPORTING
    input =                      WA_IDMXDFCERT-KBETR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDMXDFCERT-KBETR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field HWBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDMXDFCERT-HWBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDMXDFCERT-HWBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field HZBET
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDMXDFCERT-HZBET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDMXDFCERT-HZBET.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field HWSTE
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IDMXDFCERT-HWSTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDMXDFCERT-HWSTE.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IDMXDFCERT-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDMXDFCERT-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field HTEIS
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDMXDFCERT-HTEIS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDMXDFCERT-HTEIS.
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_IDMXDFCERT_STR, 
BUKRS TYPE STRING,
BELNR TYPE STRING,
STMD2 TYPE STRING,
ZBELN TYPE STRING,
KBETR TYPE STRING,
HWBTR TYPE STRING,
HZBET TYPE STRING,
HWSTE TYPE STRING,
KUNNR TYPE STRING,
CNAME1 TYPE STRING,
STCEG TYPE STRING,
SGTXT TYPE STRING,
TAXNUM TYPE STRING,
GJAHR TYPE STRING,
CNAME2 TYPE STRING,
HTEIS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDMXDFCERT_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_IDMXDFCERT_STR-BUKRS sy-vline 
WA_IDMXDFCERT_STR-BELNR sy-vline 
WA_IDMXDFCERT_STR-STMD2 sy-vline 
WA_IDMXDFCERT_STR-ZBELN sy-vline 
WA_IDMXDFCERT_STR-KBETR sy-vline 
WA_IDMXDFCERT_STR-HWBTR sy-vline 
WA_IDMXDFCERT_STR-HZBET sy-vline 
WA_IDMXDFCERT_STR-HWSTE sy-vline 
WA_IDMXDFCERT_STR-KUNNR sy-vline 
WA_IDMXDFCERT_STR-CNAME1 sy-vline 
WA_IDMXDFCERT_STR-STCEG sy-vline 
WA_IDMXDFCERT_STR-SGTXT sy-vline 
WA_IDMXDFCERT_STR-TAXNUM sy-vline 
WA_IDMXDFCERT_STR-GJAHR sy-vline 
WA_IDMXDFCERT_STR-CNAME2 sy-vline 
WA_IDMXDFCERT_STR-HTEIS sy-vline      INTO ld_text SEPARATED BY SPACE.

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