ABAP Select data from SAP table IWRKCTRPOOLEDCAP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IWRKCTRPOOLEDCAP
*  INTO TABLE @DATA(IT_IWRKCTRPOOLEDCAP2).
*--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_IWRKCTRPOOLEDCAP INDEX 1 INTO DATA(WA_IWRKCTRPOOLEDCAP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IWRKCTRPOOLEDCAP>-MANDT = 1.
<IWRKCTRPOOLEDCAP>-CAPACITYINTERNALID = 1.
<IWRKCTRPOOLEDCAP>-PLANT = 1.
<IWRKCTRPOOLEDCAP>-CAPACITY = 1.
<IWRKCTRPOOLEDCAP>-CAPACITYCATEGORYCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IWRKCTRPOOLEDCAP-CAPACITYACTIVEVERSION, sy-vline,
  WA_IWRKCTRPOOLEDCAP-CAPACITYISFINITE, sy-vline,
  WA_IWRKCTRPOOLEDCAP-CAPACITYISPOOLED, sy-vline,
  WA_IWRKCTRPOOLEDCAP-CAPACITYHASINDIVCAPACITIES, sy-vline,
  WA_IWRKCTRPOOLEDCAP-CAPACITYISEXCLDFRMLONGTERMPLNG, sy-vline,
  WA_IWRKCTRPOOLEDCAP-CAPACITYNUMBEROFCAPACITIES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IWRKCTRPOOLEDCAP 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_IWRKCTRPOOLEDCAP 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_IWRKCTRPOOLEDCAP INTO WA_IWRKCTRPOOLEDCAP.


*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 CAPACITYQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IWRKCTRPOOLEDCAP-CAPACITYQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWRKCTRPOOLEDCAP-CAPACITYQUANTITYUNIT.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field RSCESTORAGEQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IWRKCTRPOOLEDCAP-RSCESTORAGEQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IWRKCTRPOOLEDCAP-RSCESTORAGEQUANTITYUNIT.
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_IWRKCTRPOOLEDCAP_STR, 
MANDT TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
PLANT TYPE STRING,
CAPACITY TYPE STRING,
CAPACITYCATEGORYCODE TYPE STRING,
CAPACITYACTIVEVERSION TYPE STRING,
CAPACITYISFINITE TYPE STRING,
CAPACITYISPOOLED TYPE STRING,
CAPACITYHASINDIVCAPACITIES TYPE STRING,
CAPACITYISEXCLDFRMLONGTERMPLNG TYPE STRING,
CAPACITYNUMBEROFCAPACITIES TYPE STRING,
CAPACITYRESPONSIBLEPLANNER TYPE STRING,
CAPACITYPLANUTILIZATIONPERCENT TYPE STRING,
CAPACITYBREAKDURATION TYPE STRING,
CAPISUSEDINMULTIOPERATIONS TYPE STRING,
REFERENCEDCAPACITYINTERNALID TYPE STRING,
CAPOVERLOADTHRESHOLDINPERCENT TYPE STRING,
FACTORYCALENDAR TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
SHIFTGROUP TYPE STRING,
CAPACITYSTARTTIMEID TYPE STRING,
CAPACITYENDTIMEID TYPE STRING,
CAPACITYQUANTITYUNIT TYPE STRING,
CAPACITYBASEQTYUNIT TYPE STRING,
CAPACITYLASTCHANGEDATETIME TYPE STRING,
RESOURCETYPE TYPE STRING,
RESOURCECATEGORY TYPE STRING,
RSCEVALIDITYSTARTOFFSETINDAYS TYPE STRING,
RSCEVALIDITYENDOFFSETINDAYS TYPE STRING,
RESOURCESORTTEXT TYPE STRING,
RESOURCEFINITENESSLEVEL TYPE STRING,
RESOURCEISBOTTLENECK TYPE STRING,
RSCEOVERLAPPINGACTIESSYNC TYPE STRING,
RESOURCETIMEBUFFERQUANTITY TYPE STRING,
RESOURCETIMEBUFFERUNIT TYPE STRING,
RESOURCEMAXOVERLAPDURATION TYPE STRING,
RESOURCEMAXOVERLAPDURATIONUNIT TYPE STRING,
RESOURCEISCAMPAIGNRELEVANT TYPE STRING,
RSCESHIFTSANDBREAKSAREDERIVED TYPE STRING,
PPDSPERIODSOURCETYPE TYPE STRING,
PPDSPERIODDURATIONSCHEMA TYPE STRING,
PPDSPERIODTIMERATIOINPERCENT TYPE STRING,
PPDSCAPACITYSUPPLYTIMECATEGORY TYPE STRING,
RSCEHASSTORCHARCS TYPE STRING,
RSCESTORAGEQUANTITYDIMENSION TYPE STRING,
RSCESTORAGEQUANTITYUNIT TYPE STRING,
RSCESTORAGEMINPRODUCTIONQTY TYPE STRING,
RSCESTORAGEMAXQUANTITY TYPE STRING,
RSCESTORISZEROONNOFILLPURITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IWRKCTRPOOLEDCAP_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_IWRKCTRPOOLEDCAP_STR-MANDT sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITYINTERNALID sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-PLANT sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITY sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITYCATEGORYCODE sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITYACTIVEVERSION sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITYISFINITE sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITYISPOOLED sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITYHASINDIVCAPACITIES sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITYISEXCLDFRMLONGTERMPLNG sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITYNUMBEROFCAPACITIES sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITYRESPONSIBLEPLANNER sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITYPLANUTILIZATIONPERCENT sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITYBREAKDURATION sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPISUSEDINMULTIOPERATIONS sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-REFERENCEDCAPACITYINTERNALID sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPOVERLOADTHRESHOLDINPERCENT sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-FACTORYCALENDAR sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-AUTHORIZATIONGROUP sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-SHIFTGROUP sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITYSTARTTIMEID sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITYENDTIMEID sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITYQUANTITYUNIT sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITYBASEQTYUNIT sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-CAPACITYLASTCHANGEDATETIME sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RESOURCETYPE sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RESOURCECATEGORY sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RSCEVALIDITYSTARTOFFSETINDAYS sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RSCEVALIDITYENDOFFSETINDAYS sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RESOURCESORTTEXT sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RESOURCEFINITENESSLEVEL sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RESOURCEISBOTTLENECK sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RSCEOVERLAPPINGACTIESSYNC sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RESOURCETIMEBUFFERQUANTITY sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RESOURCETIMEBUFFERUNIT sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RESOURCEMAXOVERLAPDURATION sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RESOURCEMAXOVERLAPDURATIONUNIT sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RESOURCEISCAMPAIGNRELEVANT sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RSCESHIFTSANDBREAKSAREDERIVED sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-PPDSPERIODSOURCETYPE sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-PPDSPERIODDURATIONSCHEMA sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-PPDSPERIODTIMERATIOINPERCENT sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-PPDSCAPACITYSUPPLYTIMECATEGORY sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RSCEHASSTORCHARCS sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RSCESTORAGEQUANTITYDIMENSION sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RSCESTORAGEQUANTITYUNIT sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RSCESTORAGEMINPRODUCTIONQTY sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RSCESTORAGEMAXQUANTITY sy-vline 
WA_IWRKCTRPOOLEDCAP_STR-RSCESTORISZEROONNOFILLPURITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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