ABAP Select data from SAP table PWRKCTRCAPEVAL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PWRKCTRCAPEVAL
*  INTO TABLE @DATA(IT_PWRKCTRCAPEVAL2).
*--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_PWRKCTRCAPEVAL INDEX 1 INTO DATA(WA_PWRKCTRCAPEVAL2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PWRKCTRCAPEVAL-SHIFTNAME, sy-vline,
  WA_PWRKCTRCAPEVAL-CALENDARDATE, sy-vline,
  WA_PWRKCTRCAPEVAL-AVAILABLECAPACITYSHIFT, sy-vline,
  WA_PWRKCTRCAPEVAL-CALENDARWEEK, sy-vline,
  WA_PWRKCTRCAPEVAL-CALENDARMONTH, sy-vline,
  WA_PWRKCTRCAPEVAL-CALENDARYEAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PWRKCTRCAPEVAL 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_PWRKCTRCAPEVAL 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_PWRKCTRCAPEVAL INTO WA_PWRKCTRCAPEVAL.


*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 NUMCV, internal->external for field OPERATION
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_PWRKCTRCAPEVAL-OPERATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWRKCTRCAPEVAL-OPERATION.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field WORKCENTERCAPACITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PWRKCTRCAPEVAL-WORKCENTERCAPACITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWRKCTRCAPEVAL-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_PWRKCTRCAPEVAL_STR, 
MANDT TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
CAPACITYCATEGORYALLOCATION TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
SHIFTNAME TYPE STRING,
CALENDARDATE TYPE STRING,
AVAILABLECAPACITYSHIFT TYPE STRING,
CALENDARWEEK TYPE STRING,
CALENDARMONTH TYPE STRING,
CALENDARYEAR TYPE STRING,
OPERATION TYPE STRING,
FACTORYCALENDAR TYPE STRING,
PLANT TYPE STRING,
MRPCONTROLLER TYPE STRING,
WORKCENTER TYPE STRING,
WORKDAYRULE TYPE STRING,
WORKCENTERRESPONSIBLE TYPE STRING,
WORKCENTERCATEGORYCODE TYPE STRING,
CAPACITYREQUIREMENT TYPE STRING,
CAPACITYREQUIREMENTUNIT TYPE STRING,
CAPACITYENDTIME TYPE STRING,
CAPACITYREQUIREMENTORIGIN TYPE STRING,
ORDERINTERNALID TYPE STRING,
ORDERTYPE TYPE STRING,
PRODUCTIONVERSION TYPE STRING,
ORDERPLANNEDTOTALQTY TYPE STRING,
BASEUNIT TYPE STRING,
OPERATIONPLANNINGSTATUSCODE TYPE STRING,
OPERATIONLATESTSTARTDATE TYPE STRING,
OPERATIONLATESTSTARTTIME TYPE STRING,
OPERATIONLATESTENDDATE TYPE STRING,
OPERATIONLATESTENDTIME TYPE STRING,
OPLTSTSCHEDLDEXECSTRTTME TYPE STRING,
OPLTSTSCHEDLDEXECENDTME TYPE STRING,
OPLTSTSCHEDLDPROCGSTRTDTE TYPE STRING,
OPLTSTSCHEDLDPROCGSTRTTME TYPE STRING,
OPLTSTSCHEDLDTRDWNSTRTDTE TYPE STRING,
OPLTSTSCHEDLDTRDWNSTRTTME TYPE STRING,
REMAININGCAPREQOPSEGSETUPDURN TYPE STRING,
REMAININGCAPREQOPSEGPROCGDURN TYPE STRING,
REMAININGCAPREQOPSEGTRDWNDURN TYPE STRING,
ORDERSTATUSCODE TYPE STRING,
REQUIREMENTHOURS TYPE STRING,
CAPACITYSTARTTIME TYPE STRING,
WORKCENTERCAPACITYUNIT TYPE STRING,
WORKCENTERAVAILABLECAPACITY TYPE STRING,
WORKCENTERCAPACITYREQUIREMENT TYPE STRING,
ISMAINTAINED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PWRKCTRCAPEVAL_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_PWRKCTRCAPEVAL_STR-MANDT sy-vline 
WA_PWRKCTRCAPEVAL_STR-WORKCENTERINTERNALID sy-vline 
WA_PWRKCTRCAPEVAL_STR-WORKCENTERTYPECODE sy-vline 
WA_PWRKCTRCAPEVAL_STR-CAPACITYCATEGORYALLOCATION sy-vline 
WA_PWRKCTRCAPEVAL_STR-CAPACITYINTERNALID sy-vline 
WA_PWRKCTRCAPEVAL_STR-SHIFTNAME sy-vline 
WA_PWRKCTRCAPEVAL_STR-CALENDARDATE sy-vline 
WA_PWRKCTRCAPEVAL_STR-AVAILABLECAPACITYSHIFT sy-vline 
WA_PWRKCTRCAPEVAL_STR-CALENDARWEEK sy-vline 
WA_PWRKCTRCAPEVAL_STR-CALENDARMONTH sy-vline 
WA_PWRKCTRCAPEVAL_STR-CALENDARYEAR sy-vline 
WA_PWRKCTRCAPEVAL_STR-OPERATION sy-vline 
WA_PWRKCTRCAPEVAL_STR-FACTORYCALENDAR sy-vline 
WA_PWRKCTRCAPEVAL_STR-PLANT sy-vline 
WA_PWRKCTRCAPEVAL_STR-MRPCONTROLLER sy-vline 
WA_PWRKCTRCAPEVAL_STR-WORKCENTER sy-vline 
WA_PWRKCTRCAPEVAL_STR-WORKDAYRULE sy-vline 
WA_PWRKCTRCAPEVAL_STR-WORKCENTERRESPONSIBLE sy-vline 
WA_PWRKCTRCAPEVAL_STR-WORKCENTERCATEGORYCODE sy-vline 
WA_PWRKCTRCAPEVAL_STR-CAPACITYREQUIREMENT sy-vline 
WA_PWRKCTRCAPEVAL_STR-CAPACITYREQUIREMENTUNIT sy-vline 
WA_PWRKCTRCAPEVAL_STR-CAPACITYENDTIME sy-vline 
WA_PWRKCTRCAPEVAL_STR-CAPACITYREQUIREMENTORIGIN sy-vline 
WA_PWRKCTRCAPEVAL_STR-ORDERINTERNALID sy-vline 
WA_PWRKCTRCAPEVAL_STR-ORDERTYPE sy-vline 
WA_PWRKCTRCAPEVAL_STR-PRODUCTIONVERSION sy-vline 
WA_PWRKCTRCAPEVAL_STR-ORDERPLANNEDTOTALQTY sy-vline 
WA_PWRKCTRCAPEVAL_STR-BASEUNIT sy-vline 
WA_PWRKCTRCAPEVAL_STR-OPERATIONPLANNINGSTATUSCODE sy-vline 
WA_PWRKCTRCAPEVAL_STR-OPERATIONLATESTSTARTDATE sy-vline 
WA_PWRKCTRCAPEVAL_STR-OPERATIONLATESTSTARTTIME sy-vline 
WA_PWRKCTRCAPEVAL_STR-OPERATIONLATESTENDDATE sy-vline 
WA_PWRKCTRCAPEVAL_STR-OPERATIONLATESTENDTIME sy-vline 
WA_PWRKCTRCAPEVAL_STR-OPLTSTSCHEDLDEXECSTRTTME sy-vline 
WA_PWRKCTRCAPEVAL_STR-OPLTSTSCHEDLDEXECENDTME sy-vline 
WA_PWRKCTRCAPEVAL_STR-OPLTSTSCHEDLDPROCGSTRTDTE sy-vline 
WA_PWRKCTRCAPEVAL_STR-OPLTSTSCHEDLDPROCGSTRTTME sy-vline 
WA_PWRKCTRCAPEVAL_STR-OPLTSTSCHEDLDTRDWNSTRTDTE sy-vline 
WA_PWRKCTRCAPEVAL_STR-OPLTSTSCHEDLDTRDWNSTRTTME sy-vline 
WA_PWRKCTRCAPEVAL_STR-REMAININGCAPREQOPSEGSETUPDURN sy-vline 
WA_PWRKCTRCAPEVAL_STR-REMAININGCAPREQOPSEGPROCGDURN sy-vline 
WA_PWRKCTRCAPEVAL_STR-REMAININGCAPREQOPSEGTRDWNDURN sy-vline 
WA_PWRKCTRCAPEVAL_STR-ORDERSTATUSCODE sy-vline 
WA_PWRKCTRCAPEVAL_STR-REQUIREMENTHOURS sy-vline 
WA_PWRKCTRCAPEVAL_STR-CAPACITYSTARTTIME sy-vline 
WA_PWRKCTRCAPEVAL_STR-WORKCENTERCAPACITYUNIT sy-vline 
WA_PWRKCTRCAPEVAL_STR-WORKCENTERAVAILABLECAPACITY sy-vline 
WA_PWRKCTRCAPEVAL_STR-WORKCENTERCAPACITYREQUIREMENT sy-vline 
WA_PWRKCTRCAPEVAL_STR-ISMAINTAINED sy-vline      INTO ld_text SEPARATED BY SPACE.

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