ABAP Select data from SAP table PWRKCTRAVAILCAP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PWRKCTRAVAILCAP
*  INTO TABLE @DATA(IT_PWRKCTRAVAILCAP2).
*--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_PWRKCTRAVAILCAP INDEX 1 INTO DATA(WA_PWRKCTRAVAILCAP2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PWRKCTRAVAILCAP-CAPACITYACTIVEVERSION, sy-vline,
  WA_PWRKCTRAVAILCAP-VALIDITYENDDATE, sy-vline,
  WA_PWRKCTRAVAILCAP-WEEKDAY, sy-vline,
  WA_PWRKCTRAVAILCAP-AVAILABLECAPACITYSHIFT, sy-vline,
  WA_PWRKCTRAVAILCAP-CALENDARDATE, sy-vline,
  WA_PWRKCTRAVAILCAP-SHIFTSTARTDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PWRKCTRAVAILCAP 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_PWRKCTRAVAILCAP 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_PWRKCTRAVAILCAP INTO WA_PWRKCTRAVAILCAP.


*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_PWRKCTRAVAILCAP-WORKCENTERCAPACITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWRKCTRAVAILCAP-WORKCENTERCAPACITYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WORKCENTERUTILIZATIONUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PWRKCTRAVAILCAP-WORKCENTERUTILIZATIONUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWRKCTRAVAILCAP-WORKCENTERUTILIZATIONUNIT.
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_PWRKCTRAVAILCAP_STR, 
MANDT TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
CAPACITYCATEGORYALLOCATION TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
CAPACITYACTIVEVERSION TYPE STRING,
VALIDITYENDDATE TYPE STRING,
WEEKDAY TYPE STRING,
AVAILABLECAPACITYSHIFT TYPE STRING,
CALENDARDATE TYPE STRING,
SHIFTSTARTDATE TYPE STRING,
SHIFTSTARTTIME TYPE STRING,
SHIFTENDDATE TYPE STRING,
SHIFTENDTIME TYPE STRING,
CAPACITYBREAKDURATION TYPE STRING,
WORKCENTERCAPACITYUNIT TYPE STRING,
WORKCENTERUTILIZATIONUNIT TYPE STRING,
VALIDITYBEGINDATE TYPE STRING,
CALENDARMONTH TYPE STRING,
CALENDARYEAR TYPE STRING,
CALENDARWEEK TYPE STRING,
WORKDAYS TYPE STRING,
WORKCENTERPLANT TYPE STRING,
CAPACITYCATEGORYCODE TYPE STRING,
SHIFTNAME TYPE STRING,
SHIFTDEFINITION TYPE STRING,
SHIFTGROUPING TYPE STRING,
WORKDAYRULE TYPE STRING,
FACTORYCALENDAR TYPE STRING,
CAPACITYSTARTTIME TYPE STRING,
CAPACITYENDTIME TYPE STRING,
CAPACITYNUMBEROFCAPACITIES TYPE STRING,
CAPACITYPLANUTILIZATIONPERCENT TYPE STRING,
TOTOPERATINGDURATIONINHOURS TYPE STRING,
CAPACITYOPERATINGDURATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PWRKCTRAVAILCAP_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_PWRKCTRAVAILCAP_STR-MANDT sy-vline 
WA_PWRKCTRAVAILCAP_STR-WORKCENTERINTERNALID sy-vline 
WA_PWRKCTRAVAILCAP_STR-WORKCENTERTYPECODE sy-vline 
WA_PWRKCTRAVAILCAP_STR-CAPACITYCATEGORYALLOCATION sy-vline 
WA_PWRKCTRAVAILCAP_STR-CAPACITYINTERNALID sy-vline 
WA_PWRKCTRAVAILCAP_STR-CAPACITYACTIVEVERSION sy-vline 
WA_PWRKCTRAVAILCAP_STR-VALIDITYENDDATE sy-vline 
WA_PWRKCTRAVAILCAP_STR-WEEKDAY sy-vline 
WA_PWRKCTRAVAILCAP_STR-AVAILABLECAPACITYSHIFT sy-vline 
WA_PWRKCTRAVAILCAP_STR-CALENDARDATE sy-vline 
WA_PWRKCTRAVAILCAP_STR-SHIFTSTARTDATE sy-vline 
WA_PWRKCTRAVAILCAP_STR-SHIFTSTARTTIME sy-vline 
WA_PWRKCTRAVAILCAP_STR-SHIFTENDDATE sy-vline 
WA_PWRKCTRAVAILCAP_STR-SHIFTENDTIME sy-vline 
WA_PWRKCTRAVAILCAP_STR-CAPACITYBREAKDURATION sy-vline 
WA_PWRKCTRAVAILCAP_STR-WORKCENTERCAPACITYUNIT sy-vline 
WA_PWRKCTRAVAILCAP_STR-WORKCENTERUTILIZATIONUNIT sy-vline 
WA_PWRKCTRAVAILCAP_STR-VALIDITYBEGINDATE sy-vline 
WA_PWRKCTRAVAILCAP_STR-CALENDARMONTH sy-vline 
WA_PWRKCTRAVAILCAP_STR-CALENDARYEAR sy-vline 
WA_PWRKCTRAVAILCAP_STR-CALENDARWEEK sy-vline 
WA_PWRKCTRAVAILCAP_STR-WORKDAYS sy-vline 
WA_PWRKCTRAVAILCAP_STR-WORKCENTERPLANT sy-vline 
WA_PWRKCTRAVAILCAP_STR-CAPACITYCATEGORYCODE sy-vline 
WA_PWRKCTRAVAILCAP_STR-SHIFTNAME sy-vline 
WA_PWRKCTRAVAILCAP_STR-SHIFTDEFINITION sy-vline 
WA_PWRKCTRAVAILCAP_STR-SHIFTGROUPING sy-vline 
WA_PWRKCTRAVAILCAP_STR-WORKDAYRULE sy-vline 
WA_PWRKCTRAVAILCAP_STR-FACTORYCALENDAR sy-vline 
WA_PWRKCTRAVAILCAP_STR-CAPACITYSTARTTIME sy-vline 
WA_PWRKCTRAVAILCAP_STR-CAPACITYENDTIME sy-vline 
WA_PWRKCTRAVAILCAP_STR-CAPACITYNUMBEROFCAPACITIES sy-vline 
WA_PWRKCTRAVAILCAP_STR-CAPACITYPLANUTILIZATIONPERCENT sy-vline 
WA_PWRKCTRAVAILCAP_STR-TOTOPERATINGDURATIONINHOURS sy-vline 
WA_PWRKCTRAVAILCAP_STR-CAPACITYOPERATINGDURATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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