ABAP Select data from SAP table EWA_CCOC_ASS_WPC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWA_CCOC_ASS_WPC
*  INTO TABLE @DATA(IT_EWA_CCOC_ASS_WPC2).
*--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_EWA_CCOC_ASS_WPC INDEX 1 INTO DATA(WA_EWA_CCOC_ASS_WPC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWA_CCOC_ASS_WPC>-MANDT = 1.
<EWA_CCOC_ASS_WPC>-SKOST = 1.
<EWA_CCOC_ASS_WPC>-EKOST = 1.
<EWA_CCOC_ASS_WPC>-WDPLANTNR = 1.
<EWA_CCOC_ASS_WPC>-AB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWA_CCOC_ASS_WPC-ACTTYPELFNR, sy-vline,
  WA_EWA_CCOC_ASS_WPC-ACTTYPE, sy-vline,
  WA_EWA_CCOC_ASS_WPC-ACTVTY_QTY, sy-vline,
  WA_EWA_CCOC_ASS_WPC-ACTIVITYUN, sy-vline,
  WA_EWA_CCOC_ASS_WPC-PRICE, sy-vline,
  WA_EWA_CCOC_ASS_WPC-CURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWA_CCOC_ASS_WPC 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_EWA_CCOC_ASS_WPC 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_EWA_CCOC_ASS_WPC INTO WA_EWA_CCOC_ASS_WPC.


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

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

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_EWA_CCOC_ASS_WPC-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWA_CCOC_ASS_WPC-MATNR.
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_EWA_CCOC_ASS_WPC_STR, 
MANDT TYPE STRING,
SKOST TYPE STRING,
EKOST TYPE STRING,
WDPLANTNR TYPE STRING,
AB TYPE STRING,
ACTTYPELFNR TYPE STRING,
ACTTYPE TYPE STRING,
ACTVTY_QTY TYPE STRING,
ACTIVITYUN TYPE STRING,
PRICE TYPE STRING,
CURRENCY TYPE STRING,
SKOSTSTYPE TYPE STRING,
COSERVICETYPE TYPE STRING,
CORELEVANCE TYPE STRING,
RESFLD TYPE STRING,
MATNR TYPE STRING,
MATKL TYPE STRING,
BIS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWA_CCOC_ASS_WPC_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_EWA_CCOC_ASS_WPC_STR-MANDT sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-SKOST sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-EKOST sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-WDPLANTNR sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-AB sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-ACTTYPELFNR sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-ACTTYPE sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-ACTVTY_QTY sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-ACTIVITYUN sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-PRICE sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-CURRENCY sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-SKOSTSTYPE sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-COSERVICETYPE sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-CORELEVANCE sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-RESFLD sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-MATNR sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-MATKL sy-vline 
WA_EWA_CCOC_ASS_WPC_STR-BIS sy-vline      INTO ld_text SEPARATED BY SPACE.

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