ABAP Select data from SAP table COPTOWTHDESC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COPTOWTHDESC
*  INTO TABLE @DATA(IT_COPTOWTHDESC2).
*--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_COPTOWTHDESC INDEX 1 INTO DATA(WA_COPTOWTHDESC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COPTOWTHDESC>-MANDT = 1.
<COPTOWTHDESC>-TECHNICALOBJECT = 1.
<COPTOWTHDESC>-TECHOBJISEQUIPORFUNCNLLOC = 1.
<COPTOWTHDESC>-TECHNICALOBJECTLONGTEXT = 1.
<COPTOWTHDESC>-TECHNICALOBJECTDESCRIPTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COPTOWTHDESC-CLASSNUMBER, sy-vline,
  WA_COPTOWTHDESC-TECHNICALOBJECTCLASSDESC, sy-vline,
  WA_COPTOWTHDESC-TECHNICALOBJECTCATEGORY, sy-vline,
  WA_COPTOWTHDESC-TECHNICALOBJECTCATEGORYDESC, sy-vline,
  WA_COPTOWTHDESC-TECHNICALOBJECTTYPE, sy-vline,
  WA_COPTOWTHDESC-TECHNICALOBJECTTYPEDESC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COPTOWTHDESC 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_COPTOWTHDESC 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_COPTOWTHDESC INTO WA_COPTOWTHDESC.


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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_COPTOWTHDESC-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COPTOWTHDESC-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field CONSTRUCTIONMATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_COPTOWTHDESC-CONSTRUCTIONMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COPTOWTHDESC-CONSTRUCTIONMATERIAL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field COSTCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COPTOWTHDESC-COSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COPTOWTHDESC-COSTCENTER.
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_COPTOWTHDESC_STR, 
MANDT TYPE STRING,
TECHNICALOBJECT TYPE STRING,
TECHOBJISEQUIPORFUNCNLLOC TYPE STRING,
TECHNICALOBJECTLONGTEXT TYPE STRING,
TECHNICALOBJECTDESCRIPTION TYPE STRING,
CLASSNUMBER TYPE STRING,
TECHNICALOBJECTCLASSDESC TYPE STRING,
TECHNICALOBJECTCATEGORY TYPE STRING,
TECHNICALOBJECTCATEGORYDESC TYPE STRING,
TECHNICALOBJECTTYPE TYPE STRING,
TECHNICALOBJECTTYPEDESC TYPE STRING,
ASSETMANUFACTURERNAME TYPE STRING,
MANUFACTURERPARTTYPENAME TYPE STRING,
MANUFACTURERPARTNMBR TYPE STRING,
MANUFACTURERSERIALNUMBER TYPE STRING,
SERIALNUMBER TYPE STRING,
MATERIAL TYPE STRING,
CONSTRUCTIONMATERIAL TYPE STRING,
INVENTORYNUMBER TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
GROSSWEIGHT TYPE STRING,
GROSSWEIGHTUNIT TYPE STRING,
SIZEORDIMENSIONTEXT TYPE STRING,
TECHOBJNMBROFATTACHEDDOCUMENTS TYPE STRING,
MAINTOBJECTINTERNALID TYPE STRING,
TECHOBJECTWITHLEADINGZEROS TYPE STRING,
COSTCENTER TYPE STRING,
CONTROLLINGAREA TYPE STRING,
MAINTENANCEPLANNINGPLANT TYPE STRING,
MAINTENANCEPLANNERGROUP TYPE STRING,
MAINTENANCEPLANT TYPE STRING,
MAINTOBJECTLOCACCTASSGMTNMBR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COPTOWTHDESC_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_COPTOWTHDESC_STR-MANDT sy-vline 
WA_COPTOWTHDESC_STR-TECHNICALOBJECT sy-vline 
WA_COPTOWTHDESC_STR-TECHOBJISEQUIPORFUNCNLLOC sy-vline 
WA_COPTOWTHDESC_STR-TECHNICALOBJECTLONGTEXT sy-vline 
WA_COPTOWTHDESC_STR-TECHNICALOBJECTDESCRIPTION sy-vline 
WA_COPTOWTHDESC_STR-CLASSNUMBER sy-vline 
WA_COPTOWTHDESC_STR-TECHNICALOBJECTCLASSDESC sy-vline 
WA_COPTOWTHDESC_STR-TECHNICALOBJECTCATEGORY sy-vline 
WA_COPTOWTHDESC_STR-TECHNICALOBJECTCATEGORYDESC sy-vline 
WA_COPTOWTHDESC_STR-TECHNICALOBJECTTYPE sy-vline 
WA_COPTOWTHDESC_STR-TECHNICALOBJECTTYPEDESC sy-vline 
WA_COPTOWTHDESC_STR-ASSETMANUFACTURERNAME sy-vline 
WA_COPTOWTHDESC_STR-MANUFACTURERPARTTYPENAME sy-vline 
WA_COPTOWTHDESC_STR-MANUFACTURERPARTNMBR sy-vline 
WA_COPTOWTHDESC_STR-MANUFACTURERSERIALNUMBER sy-vline 
WA_COPTOWTHDESC_STR-SERIALNUMBER sy-vline 
WA_COPTOWTHDESC_STR-MATERIAL sy-vline 
WA_COPTOWTHDESC_STR-CONSTRUCTIONMATERIAL sy-vline 
WA_COPTOWTHDESC_STR-INVENTORYNUMBER sy-vline 
WA_COPTOWTHDESC_STR-AUTHORIZATIONGROUP sy-vline 
WA_COPTOWTHDESC_STR-GROSSWEIGHT sy-vline 
WA_COPTOWTHDESC_STR-GROSSWEIGHTUNIT sy-vline 
WA_COPTOWTHDESC_STR-SIZEORDIMENSIONTEXT sy-vline 
WA_COPTOWTHDESC_STR-TECHOBJNMBROFATTACHEDDOCUMENTS sy-vline 
WA_COPTOWTHDESC_STR-MAINTOBJECTINTERNALID sy-vline 
WA_COPTOWTHDESC_STR-TECHOBJECTWITHLEADINGZEROS sy-vline 
WA_COPTOWTHDESC_STR-COSTCENTER sy-vline 
WA_COPTOWTHDESC_STR-CONTROLLINGAREA sy-vline 
WA_COPTOWTHDESC_STR-MAINTENANCEPLANNINGPLANT sy-vline 
WA_COPTOWTHDESC_STR-MAINTENANCEPLANNERGROUP sy-vline 
WA_COPTOWTHDESC_STR-MAINTENANCEPLANT sy-vline 
WA_COPTOWTHDESC_STR-MAINTOBJECTLOCACCTASSGMTNMBR sy-vline      INTO ld_text SEPARATED BY SPACE.

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