ABAP Select data from SAP table WTY_COPA into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WTY_COPA
*  INTO TABLE @DATA(IT_WTY_COPA2).
*--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_WTY_COPA INDEX 1 INTO DATA(WA_WTY_COPA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WTY_COPA>-WERKS = 1.
<WTY_COPA>-BUKRS = 1.
<WTY_COPA>-VKORG = 1.
<WTY_COPA>-VTWEG = 1.
<WTY_COPA>-SPART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WTY_COPA-CLMNO, sy-vline,
  WA_WTY_COPA-CLMTY, sy-vline,
  WA_WTY_COPA-POSKT, sy-vline,
  WA_WTY_COPA-KATEG, sy-vline,
  WA_WTY_COPA-REJCD, sy-vline,
  WA_WTY_COPA-PARVW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WTY_COPA 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_WTY_COPA 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_WTY_COPA INTO WA_WTY_COPA.


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

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

*Conversion exit ALPHA, internal->external for field PARNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WTY_COPA-PARNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WTY_COPA-PARNR.
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_WTY_COPA_STR, 
WERKS TYPE STRING,
BUKRS TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
CLMNO TYPE STRING,
CLMTY TYPE STRING,
POSKT TYPE STRING,
KATEG TYPE STRING,
REJCD TYPE STRING,
PARVW TYPE STRING,
PARNR TYPE STRING,
RELTY TYPE STRING,
ROBEX TYPE STRING,
MODTX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WTY_COPA_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_WTY_COPA_STR-WERKS sy-vline 
WA_WTY_COPA_STR-BUKRS sy-vline 
WA_WTY_COPA_STR-VKORG sy-vline 
WA_WTY_COPA_STR-VTWEG sy-vline 
WA_WTY_COPA_STR-SPART sy-vline 
WA_WTY_COPA_STR-CLMNO sy-vline 
WA_WTY_COPA_STR-CLMTY sy-vline 
WA_WTY_COPA_STR-POSKT sy-vline 
WA_WTY_COPA_STR-KATEG sy-vline 
WA_WTY_COPA_STR-REJCD sy-vline 
WA_WTY_COPA_STR-PARVW sy-vline 
WA_WTY_COPA_STR-PARNR sy-vline 
WA_WTY_COPA_STR-RELTY sy-vline 
WA_WTY_COPA_STR-ROBEX sy-vline 
WA_WTY_COPA_STR-MODTX sy-vline      INTO ld_text SEPARATED BY SPACE.

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