ABAP Select data from SAP table CAPEVAL_S_WORKCENTERDETAILS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CAPEVAL_S_WORKCENTERDETAILS
*  INTO TABLE @DATA(IT_CAPEVAL_S_WORKCENTERDETAILS2).
*--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_CAPEVAL_S_WORKCENTERDETAILS INDEX 1 INTO DATA(WA_CAPEVAL_S_WORKCENTERDETAILS2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CAPEVAL_S_WORKCENTERDETAILS-WORKCENTERDESC, sy-vline,
  WA_CAPEVAL_S_WORKCENTERDETAILS-CAPACITYCATEGORYCODE, sy-vline,
  WA_CAPEVAL_S_WORKCENTERDETAILS-CAPACITYCATEGORYNAME, sy-vline,
  WA_CAPEVAL_S_WORKCENTERDETAILS-CAPACITYEVALUATIONTIMEPERIOD, sy-vline,
  WA_CAPEVAL_S_WORKCENTERDETAILS-SHIFTNAME, sy-vline,
  WA_CAPEVAL_S_WORKCENTERDETAILS-SHIFTNUMBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CAPEVAL_S_WORKCENTERDETAILS 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_CAPEVAL_S_WORKCENTERDETAILS 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_CAPEVAL_S_WORKCENTERDETAILS INTO WA_CAPEVAL_S_WORKCENTERDETAILS.


*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 BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CAPEVAL_S_WORKCENTERDETAILS-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CAPEVAL_S_WORKCENTERDETAILS-BASEUNIT.
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_CAPEVAL_S_WORKCENTERDETAILS_STR, 
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
CAPACITYCATEGORYALLOCATION TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
WORKCENTER TYPE STRING,
WORKCENTERDESC TYPE STRING,
CAPACITYCATEGORYCODE TYPE STRING,
CAPACITYCATEGORYNAME TYPE STRING,
CAPACITYEVALUATIONTIMEPERIOD TYPE STRING,
SHIFTNAME TYPE STRING,
SHIFTNUMBER TYPE STRING,
ISMAINTAINED TYPE STRING,
ISNONWORKINGDAY TYPE STRING,
BASEUNIT TYPE STRING,
WORKCENTERAVAILABLECAPACITY TYPE STRING,
WORKCENTERCAPACITYREQUIREMENT TYPE STRING,
WORKCENTERCAPACITYUTILZNPERDAY TYPE STRING,
WORKCENTERBACKLOG TYPE STRING,
CAPACITYTEXT TYPE STRING,
WORKCENTERCAPACITYUTILZNINHOUR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CAPEVAL_S_WORKCENTERDETAILS_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_CAPEVAL_S_WORKCENTERDETAILS_STR-WORKCENTERINTERNALID sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-WORKCENTERTYPECODE sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-CAPACITYCATEGORYALLOCATION sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-CAPACITYINTERNALID sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-WORKCENTER sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-WORKCENTERDESC sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-CAPACITYCATEGORYCODE sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-CAPACITYCATEGORYNAME sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-CAPACITYEVALUATIONTIMEPERIOD sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-SHIFTNAME sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-SHIFTNUMBER sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-ISMAINTAINED sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-ISNONWORKINGDAY sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-BASEUNIT sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-WORKCENTERAVAILABLECAPACITY sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-WORKCENTERCAPACITYREQUIREMENT sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-WORKCENTERCAPACITYUTILZNPERDAY sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-WORKCENTERBACKLOG sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-CAPACITYTEXT sy-vline 
WA_CAPEVAL_S_WORKCENTERDETAILS_STR-WORKCENTERCAPACITYUTILZNINHOUR sy-vline      INTO ld_text SEPARATED BY SPACE.

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