ABAP Select data from SAP table ISWRKCTRAVAILABLECAPACITYT2_DR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISWRKCTRAVAILABLECAPACITYT2_DR 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 ISWRKCTRAVAILABLECAPACITYT2_DR. 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 ISWRKCTRAVAILABLECAPACITYT2_DR 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_ISWRKCTRAVAILABLECAPACITYT2_DR TYPE STANDARD TABLE OF ISWRKCTRAVAILABLECAPACITYT2_DR,
      WA_ISWRKCTRAVAILABLECAPACITYT2_DR TYPE ISWRKCTRAVAILABLECAPACITYT2_DR,
      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: <ISWRKCTRAVAILABLECAPACITYT2_DR> TYPE ISWRKCTRAVAILABLECAPACITYT2_DR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISWRKCTRAVAILABLECAPACITYT2_DR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISWRKCTRAVAILABLECAPACITYT2_DR
  INTO TABLE IT_ISWRKCTRAVAILABLECAPACITYT2_DR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISWRKCTRAVAILABLECAPACITYT2_DR
*  INTO TABLE @DATA(IT_ISWRKCTRAVAILABLECAPACITYT2_DR2).
*--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_ISWRKCTRAVAILABLECAPACITYT2_DR INDEX 1 INTO DATA(WA_ISWRKCTRAVAILABLECAPACITYT2_DR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISWRKCTRAVAILABLECAPACITYT2_DR ASSIGNING <ISWRKCTRAVAILABLECAPACITYT2_DR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISWRKCTRAVAILABLECAPACITYT2_DR>-DRAFTUUID = 1.
<ISWRKCTRAVAILABLECAPACITYT2_DR>-PARENTDRAFTUUID = 1.
<ISWRKCTRAVAILABLECAPACITYT2_DR>-WORKCENTERINTERNALID = 1.
<ISWRKCTRAVAILABLECAPACITYT2_DR>-WORKCENTERTYPECODE = 1.
<ISWRKCTRAVAILABLECAPACITYT2_DR>-CAPACITYCATEGORYALLOCATION = 1.

ENDLOOP.

LOOP AT IT_ISWRKCTRAVAILABLECAPACITYT2_DR INTO WA_ISWRKCTRAVAILABLECAPACITYT2_DR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISWRKCTRAVAILABLECAPACITYT2_DR-CAPACITYINTERNALID, sy-vline,
  WA_ISWRKCTRAVAILABLECAPACITYT2_DR-CALENDARDATE, sy-vline,
  WA_ISWRKCTRAVAILABLECAPACITYT2_DR-VALIDITYENDDATE, sy-vline,
  WA_ISWRKCTRAVAILABLECAPACITYT2_DR-CAPACITYACTIVEVERSION, sy-vline,
  WA_ISWRKCTRAVAILABLECAPACITYT2_DR-AVAILABLECAPACITYSHIFT, sy-vline,
  WA_ISWRKCTRAVAILABLECAPACITYT2_DR-WEEKDAY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISWRKCTRAVAILABLECAPACITYT2_DR 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_ISWRKCTRAVAILABLECAPACITYT2_DR 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_ISWRKCTRAVAILABLECAPACITYT2_DR INTO WA_ISWRKCTRAVAILABLECAPACITYT2_DR.


*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_ISWRKCTRAVAILABLECAPACITYT2_DR-WORKCENTERCAPACITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISWRKCTRAVAILABLECAPACITYT2_DR-WORKCENTERCAPACITYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WORKCENTERUTILIZATIONUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ISWRKCTRAVAILABLECAPACITYT2_DR-WORKCENTERUTILIZATIONUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISWRKCTRAVAILABLECAPACITYT2_DR-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_ISWRKCTRAVAILABLECAPACITYT2_DR_STR, 
DRAFTUUID TYPE STRING,
PARENTDRAFTUUID TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
CAPACITYCATEGORYALLOCATION TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
CALENDARDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
CAPACITYACTIVEVERSION TYPE STRING,
AVAILABLECAPACITYSHIFT TYPE STRING,
WEEKDAY TYPE STRING,
SHIFTSTARTDATE TYPE STRING,
SHIFTSTARTTIME TYPE STRING,
SHIFTENDDATE TYPE STRING,
SHIFTENDTIME TYPE STRING,
CALENDARMONTH TYPE STRING,
CALENDARYEAR TYPE STRING,
CALENDARWEEK TYPE STRING,
WORKDAYS TYPE STRING,
SHIFTNAME TYPE STRING,
SHIFTDEFINITION TYPE STRING,
SHIFTDEFINITIONNAME TYPE STRING,
SHIFTGROUPING TYPE STRING,
WORKDAYRULE TYPE STRING,
FACTORYCALENDAR TYPE STRING,
CAPACITYSTARTTIME TYPE STRING,
CAPACITYENDTIME TYPE STRING,
CAPACITYBREAKDURATION TYPE STRING,
WORKCENTERCAPACITYUNIT TYPE STRING,
CAPACITYNUMBEROFCAPACITIES TYPE STRING,
WORKCENTERUTILIZATIONUNIT TYPE STRING,
CAPACITYPLANUTILIZATIONPERCENT TYPE STRING,
VALIDITYBEGINDATE TYPE STRING,
SHIFTSTATUSTEXT TYPE STRING,
SHIFTSTATUSCODE TYPE STRING,
TOTOPERATINGDURATIONINHOURS TYPE STRING,
OPERATINGCAPACITYDURATIONINHRS TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYCONSISTENCYSTATUS TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
ISACTIVEENTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISWRKCTRAVAILABLECAPACITYT2_DR_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_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-DRAFTUUID sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-PARENTDRAFTUUID sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-WORKCENTERINTERNALID sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-WORKCENTERTYPECODE sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-CAPACITYCATEGORYALLOCATION sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-CAPACITYINTERNALID sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-CALENDARDATE sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-VALIDITYENDDATE sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-CAPACITYACTIVEVERSION sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-AVAILABLECAPACITYSHIFT sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-WEEKDAY sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-SHIFTSTARTDATE sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-SHIFTSTARTTIME sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-SHIFTENDDATE sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-SHIFTENDTIME sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-CALENDARMONTH sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-CALENDARYEAR sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-CALENDARWEEK sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-WORKDAYS sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-SHIFTNAME sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-SHIFTDEFINITION sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-SHIFTDEFINITIONNAME sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-SHIFTGROUPING sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-WORKDAYRULE sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-FACTORYCALENDAR sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-CAPACITYSTARTTIME sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-CAPACITYENDTIME sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-CAPACITYBREAKDURATION sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-WORKCENTERCAPACITYUNIT sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-CAPACITYNUMBEROFCAPACITIES sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-WORKCENTERUTILIZATIONUNIT sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-CAPACITYPLANUTILIZATIONPERCENT sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-VALIDITYBEGINDATE sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-SHIFTSTATUSTEXT sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-SHIFTSTATUSCODE sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-TOTOPERATINGDURATIONINHOURS sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-OPERATINGCAPACITYDURATIONINHRS sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-HASACTIVEENTITY sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-DRAFTENTITYCONSISTENCYSTATUS sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_ISWRKCTRAVAILABLECAPACITYT2_DR_STR-ISACTIVEENTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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