ABAP Select data from SAP table IMATDOCOVSERNR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMATDOCOVSERNR
*  INTO TABLE @DATA(IT_IMATDOCOVSERNR2).
*--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_IMATDOCOVSERNR INDEX 1 INTO DATA(WA_IMATDOCOVSERNR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMATDOCOVSERNR>-MANDT = 1.
<IMATDOCOVSERNR>-MATERIAL = 1.
<IMATDOCOVSERNR>-SERIALNUMBER = 1.
<IMATDOCOVSERNR>-MATERIALDOCUMENT = 1.
<IMATDOCOVSERNR>-MATERIALDOCUMENTITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMATDOCOVSERNR-MATERIALDOCUMENTYEAR, sy-vline,
  WA_IMATDOCOVSERNR-EQUIPMENT, sy-vline,
  WA_IMATDOCOVSERNR-MATERIALNAME, sy-vline,
  WA_IMATDOCOVSERNR-PHYSICALINVENTORYDOCUMENTITEM, sy-vline,
  WA_IMATDOCOVSERNR-SERIALNUMBERISINBOOKS, sy-vline,
  WA_IMATDOCOVSERNR-SERIALNUMBERISCOUNTED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMATDOCOVSERNR 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_IMATDOCOVSERNR 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_IMATDOCOVSERNR INTO WA_IMATDOCOVSERNR.


*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 MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IMATDOCOVSERNR-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMATDOCOVSERNR-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field SERIALNUMBER
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_IMATDOCOVSERNR-SERIALNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMATDOCOVSERNR-SERIALNUMBER.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field MATERIALDOCUMENTYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IMATDOCOVSERNR-MATERIALDOCUMENTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMATDOCOVSERNR-MATERIALDOCUMENTYEAR.
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_IMATDOCOVSERNR_STR, 
MANDT TYPE STRING,
MATERIAL TYPE STRING,
SERIALNUMBER TYPE STRING,
MATERIALDOCUMENT TYPE STRING,
MATERIALDOCUMENTITEM TYPE STRING,
MATERIALDOCUMENTYEAR TYPE STRING,
EQUIPMENT TYPE STRING,
MATERIALNAME TYPE STRING,
PHYSICALINVENTORYDOCUMENTITEM TYPE STRING,
SERIALNUMBERISINBOOKS TYPE STRING,
SERIALNUMBERISCOUNTED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMATDOCOVSERNR_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_IMATDOCOVSERNR_STR-MANDT sy-vline 
WA_IMATDOCOVSERNR_STR-MATERIAL sy-vline 
WA_IMATDOCOVSERNR_STR-SERIALNUMBER sy-vline 
WA_IMATDOCOVSERNR_STR-MATERIALDOCUMENT sy-vline 
WA_IMATDOCOVSERNR_STR-MATERIALDOCUMENTITEM sy-vline 
WA_IMATDOCOVSERNR_STR-MATERIALDOCUMENTYEAR sy-vline 
WA_IMATDOCOVSERNR_STR-EQUIPMENT sy-vline 
WA_IMATDOCOVSERNR_STR-MATERIALNAME sy-vline 
WA_IMATDOCOVSERNR_STR-PHYSICALINVENTORYDOCUMENTITEM sy-vline 
WA_IMATDOCOVSERNR_STR-SERIALNUMBERISINBOOKS sy-vline 
WA_IMATDOCOVSERNR_STR-SERIALNUMBERISCOUNTED sy-vline      INTO ld_text SEPARATED BY SPACE.

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