ABAP Select data from SAP table CWCCAPPERBUCKET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CWCCAPPERBUCKET
*  INTO TABLE @DATA(IT_CWCCAPPERBUCKET2).
*--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_CWCCAPPERBUCKET INDEX 1 INTO DATA(WA_CWCCAPPERBUCKET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CWCCAPPERBUCKET>-MANDT = 1.
<CWCCAPPERBUCKET>-WORKCENTERINTERNALID = 1.
<CWCCAPPERBUCKET>-WORKCENTERTYPECODE = 1.
<CWCCAPPERBUCKET>-CAPACITYCATEGORYALLOCATION = 1.
<CWCCAPPERBUCKET>-CAPACITYINTERNALID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CWCCAPPERBUCKET-CAPACITYEVALUATIONTIMEPERIOD, sy-vline,
  WA_CWCCAPPERBUCKET-SHIFTNAME, sy-vline,
  WA_CWCCAPPERBUCKET-PLANT, sy-vline,
  WA_CWCCAPPERBUCKET-WORKCENTER, sy-vline,
  WA_CWCCAPPERBUCKET-CAPEVALBUCKETTYPE, sy-vline,
  WA_CWCCAPPERBUCKET-CAPACITYEVALUATIONTIMEPERDTEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CWCCAPPERBUCKET 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_CWCCAPPERBUCKET 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_CWCCAPPERBUCKET INTO WA_CWCCAPPERBUCKET.


*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 CUNIT, internal->external for field WORKCENTERCAPACITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CWCCAPPERBUCKET-WORKCENTERCAPACITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWCCAPPERBUCKET-WORKCENTERCAPACITYUNIT.
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_CWCCAPPERBUCKET_STR, 
MANDT TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
CAPACITYCATEGORYALLOCATION TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
CAPACITYEVALUATIONTIMEPERIOD TYPE STRING,
SHIFTNAME TYPE STRING,
PLANT TYPE STRING,
WORKCENTER TYPE STRING,
CAPEVALBUCKETTYPE TYPE STRING,
CAPACITYEVALUATIONTIMEPERDTEXT TYPE STRING,
WORKCENTERRESPONSIBLE TYPE STRING,
CAPACITYSTARTTIME TYPE STRING,
CAPACITYENDTIME TYPE STRING,
WORKCENTERAVAILABLECAPACITY TYPE STRING,
WORKCENTERCAPRQMTINCAPUNIT TYPE STRING,
WRKCTRRMNGCAPINCAPUNIT TYPE STRING,
WORKCENTERTOTUTILZNINTMEPERD TYPE STRING,
WORKCENTERCAPACITYUNIT TYPE STRING,
WORKCENTERCAPUNITTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CWCCAPPERBUCKET_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_CWCCAPPERBUCKET_STR-MANDT sy-vline 
WA_CWCCAPPERBUCKET_STR-WORKCENTERINTERNALID sy-vline 
WA_CWCCAPPERBUCKET_STR-WORKCENTERTYPECODE sy-vline 
WA_CWCCAPPERBUCKET_STR-CAPACITYCATEGORYALLOCATION sy-vline 
WA_CWCCAPPERBUCKET_STR-CAPACITYINTERNALID sy-vline 
WA_CWCCAPPERBUCKET_STR-CAPACITYEVALUATIONTIMEPERIOD sy-vline 
WA_CWCCAPPERBUCKET_STR-SHIFTNAME sy-vline 
WA_CWCCAPPERBUCKET_STR-PLANT sy-vline 
WA_CWCCAPPERBUCKET_STR-WORKCENTER sy-vline 
WA_CWCCAPPERBUCKET_STR-CAPEVALBUCKETTYPE sy-vline 
WA_CWCCAPPERBUCKET_STR-CAPACITYEVALUATIONTIMEPERDTEXT sy-vline 
WA_CWCCAPPERBUCKET_STR-WORKCENTERRESPONSIBLE sy-vline 
WA_CWCCAPPERBUCKET_STR-CAPACITYSTARTTIME sy-vline 
WA_CWCCAPPERBUCKET_STR-CAPACITYENDTIME sy-vline 
WA_CWCCAPPERBUCKET_STR-WORKCENTERAVAILABLECAPACITY sy-vline 
WA_CWCCAPPERBUCKET_STR-WORKCENTERCAPRQMTINCAPUNIT sy-vline 
WA_CWCCAPPERBUCKET_STR-WRKCTRRMNGCAPINCAPUNIT sy-vline 
WA_CWCCAPPERBUCKET_STR-WORKCENTERTOTUTILZNINTMEPERD sy-vline 
WA_CWCCAPPERBUCKET_STR-WORKCENTERCAPACITYUNIT sy-vline 
WA_CWCCAPPERBUCKET_STR-WORKCENTERCAPUNITTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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