ABAP Select data from SAP table PWCCAPNIGHTAGGR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PWCCAPNIGHTAGGR
*  INTO TABLE @DATA(IT_PWCCAPNIGHTAGGR2).
*--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_PWCCAPNIGHTAGGR INDEX 1 INTO DATA(WA_PWCCAPNIGHTAGGR2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PWCCAPNIGHTAGGR-CALENDARDATE, sy-vline,
  WA_PWCCAPNIGHTAGGR-SHIFTNAME, sy-vline,
  WA_PWCCAPNIGHTAGGR-AVAILABLECAPACITYSHIFT, sy-vline,
  WA_PWCCAPNIGHTAGGR-PLANT, sy-vline,
  WA_PWCCAPNIGHTAGGR-MRPCONTROLLER, sy-vline,
  WA_PWCCAPNIGHTAGGR-WORKCENTER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PWCCAPNIGHTAGGR 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_PWCCAPNIGHTAGGR 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_PWCCAPNIGHTAGGR INTO WA_PWCCAPNIGHTAGGR.


*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_PWCCAPNIGHTAGGR-OPERATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWCCAPNIGHTAGGR-OPERATION.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field WORKCENTERCAPACITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PWCCAPNIGHTAGGR-WORKCENTERCAPACITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWCCAPNIGHTAGGR-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_PWCCAPNIGHTAGGR_STR, 
MANDT TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
CAPACITYCATEGORYALLOCATION TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
CALENDARDATE TYPE STRING,
SHIFTNAME TYPE STRING,
AVAILABLECAPACITYSHIFT TYPE STRING,
PLANT TYPE STRING,
MRPCONTROLLER TYPE STRING,
WORKCENTER TYPE STRING,
CALENDARWEEK TYPE STRING,
CALENDARMONTH TYPE STRING,
CALENDARYEAR TYPE STRING,
YEARWEEK TYPE STRING,
ISNONWORKINGDAY TYPE STRING,
ISMAINTAINED TYPE STRING,
WORKCENTERCATEGORYCODE TYPE STRING,
CAPACITYCATEGORYCODE TYPE STRING,
CAPACITY TYPE STRING,
CAPACITYTEXT TYPE STRING,
CAPACITYRESPONSIBLEPLANNER TYPE STRING,
WORKCENTERRESPONSIBLE TYPE STRING,
CAPACITYREQUIREMENT TYPE STRING,
OPERATION TYPE STRING,
CAPACITYREQUIREMENTUNIT TYPE STRING,
WORKCENTERCAPACITYUNIT TYPE STRING,
CAPACITYREQUIREMENTORIGIN TYPE STRING,
ORDERINTERNALID TYPE STRING,
ORDERTYPE TYPE STRING,
OPERATIONPLANNINGSTATUSCODE TYPE STRING,
REMAININGCAPREQOPSEGSETUPDURN TYPE STRING,
REMAININGCAPREQOPSEGPROCGDURN TYPE STRING,
REMAININGCAPREQOPSEGTRDWNDURN TYPE STRING,
ORDERSTATUSCODE TYPE STRING,
WORKCENTERAVAILABLECAPACITY TYPE STRING,
WORKCENTERCAPACITYREQUIREMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PWCCAPNIGHTAGGR_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_PWCCAPNIGHTAGGR_STR-MANDT sy-vline 
WA_PWCCAPNIGHTAGGR_STR-WORKCENTERINTERNALID sy-vline 
WA_PWCCAPNIGHTAGGR_STR-WORKCENTERTYPECODE sy-vline 
WA_PWCCAPNIGHTAGGR_STR-CAPACITYCATEGORYALLOCATION sy-vline 
WA_PWCCAPNIGHTAGGR_STR-CAPACITYINTERNALID sy-vline 
WA_PWCCAPNIGHTAGGR_STR-CALENDARDATE sy-vline 
WA_PWCCAPNIGHTAGGR_STR-SHIFTNAME sy-vline 
WA_PWCCAPNIGHTAGGR_STR-AVAILABLECAPACITYSHIFT sy-vline 
WA_PWCCAPNIGHTAGGR_STR-PLANT sy-vline 
WA_PWCCAPNIGHTAGGR_STR-MRPCONTROLLER sy-vline 
WA_PWCCAPNIGHTAGGR_STR-WORKCENTER sy-vline 
WA_PWCCAPNIGHTAGGR_STR-CALENDARWEEK sy-vline 
WA_PWCCAPNIGHTAGGR_STR-CALENDARMONTH sy-vline 
WA_PWCCAPNIGHTAGGR_STR-CALENDARYEAR sy-vline 
WA_PWCCAPNIGHTAGGR_STR-YEARWEEK sy-vline 
WA_PWCCAPNIGHTAGGR_STR-ISNONWORKINGDAY sy-vline 
WA_PWCCAPNIGHTAGGR_STR-ISMAINTAINED sy-vline 
WA_PWCCAPNIGHTAGGR_STR-WORKCENTERCATEGORYCODE sy-vline 
WA_PWCCAPNIGHTAGGR_STR-CAPACITYCATEGORYCODE sy-vline 
WA_PWCCAPNIGHTAGGR_STR-CAPACITY sy-vline 
WA_PWCCAPNIGHTAGGR_STR-CAPACITYTEXT sy-vline 
WA_PWCCAPNIGHTAGGR_STR-CAPACITYRESPONSIBLEPLANNER sy-vline 
WA_PWCCAPNIGHTAGGR_STR-WORKCENTERRESPONSIBLE sy-vline 
WA_PWCCAPNIGHTAGGR_STR-CAPACITYREQUIREMENT sy-vline 
WA_PWCCAPNIGHTAGGR_STR-OPERATION sy-vline 
WA_PWCCAPNIGHTAGGR_STR-CAPACITYREQUIREMENTUNIT sy-vline 
WA_PWCCAPNIGHTAGGR_STR-WORKCENTERCAPACITYUNIT sy-vline 
WA_PWCCAPNIGHTAGGR_STR-CAPACITYREQUIREMENTORIGIN sy-vline 
WA_PWCCAPNIGHTAGGR_STR-ORDERINTERNALID sy-vline 
WA_PWCCAPNIGHTAGGR_STR-ORDERTYPE sy-vline 
WA_PWCCAPNIGHTAGGR_STR-OPERATIONPLANNINGSTATUSCODE sy-vline 
WA_PWCCAPNIGHTAGGR_STR-REMAININGCAPREQOPSEGSETUPDURN sy-vline 
WA_PWCCAPNIGHTAGGR_STR-REMAININGCAPREQOPSEGPROCGDURN sy-vline 
WA_PWCCAPNIGHTAGGR_STR-REMAININGCAPREQOPSEGTRDWNDURN sy-vline 
WA_PWCCAPNIGHTAGGR_STR-ORDERSTATUSCODE sy-vline 
WA_PWCCAPNIGHTAGGR_STR-WORKCENTERAVAILABLECAPACITY sy-vline 
WA_PWCCAPNIGHTAGGR_STR-WORKCENTERCAPACITYREQUIREMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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