ABAP Select data from SAP table PWCCAPOPNIGHTS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PWCCAPOPNIGHTS
*  INTO TABLE @DATA(IT_PWCCAPOPNIGHTS2).
*--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_PWCCAPOPNIGHTS INDEX 1 INTO DATA(WA_PWCCAPOPNIGHTS2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PWCCAPOPNIGHTS-ORDERID, sy-vline,
  WA_PWCCAPOPNIGHTS-SHIFTNAME, sy-vline,
  WA_PWCCAPOPNIGHTS-WEEKDAY, sy-vline,
  WA_PWCCAPOPNIGHTS-VALIDITYBEGINDATE, sy-vline,
  WA_PWCCAPOPNIGHTS-VALIDITYENDDATE, sy-vline,
  WA_PWCCAPOPNIGHTS-AVAILABLECAPACITYSHIFT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PWCCAPOPNIGHTS 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_PWCCAPOPNIGHTS 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_PWCCAPOPNIGHTS INTO WA_PWCCAPOPNIGHTS.


*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 MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PWCCAPOPNIGHTS-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWCCAPOPNIGHTS-MATERIAL.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field BASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PWCCAPOPNIGHTS-BASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWCCAPOPNIGHTS-BASEUNIT.
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_PWCCAPOPNIGHTS_STR, 
MANDT TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
CAPACITYCATEGORYALLOCATION TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
ORDERID TYPE STRING,
SHIFTNAME TYPE STRING,
WEEKDAY TYPE STRING,
VALIDITYBEGINDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
AVAILABLECAPACITYSHIFT TYPE STRING,
CAPACITYACTIVEVERSION TYPE STRING,
PLANT TYPE STRING,
MRPCONTROLLER TYPE STRING,
WORKCENTER TYPE STRING,
MATERIAL TYPE STRING,
CAPACITYREQUIREMENT TYPE STRING,
WORKCENTERRESPONSIBLE TYPE STRING,
ORDERCATEGORY TYPE STRING,
WORKCENTERCATEGORYCODE TYPE STRING,
CAPACITYREQUIREMENTORIGIN TYPE STRING,
OPERATION TYPE STRING,
CAPACITYREQUIREMENTUNIT TYPE STRING,
ORDERINTERNALID TYPE STRING,
ORDERTYPE TYPE STRING,
PRODUCTIONVERSION TYPE STRING,
ORDERPLANNEDTOTALQTY TYPE STRING,
BASEUNIT TYPE STRING,
AVAILABLECAPACITYINTERVALDURN TYPE STRING,
TOTOPERATINGDURATIONINSECONDS TYPE STRING,
OPERATINGDURATIONINSECONDS TYPE STRING,
CAPACITYSTARTTIME TYPE STRING,
CAPACITYENDTIME TYPE STRING,
NIGHTSPLITDATE TYPE STRING,
WORKDAYRULE TYPE STRING,
FACTORYCALENDAR 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,
CAPACITYREQUIREMENTSAREDTMND TYPE STRING,
TOTREQUIREMENTINSECONDS TYPE STRING,
ORDERSTATUSCODE TYPE STRING,
ORDERFIRMINGSTATUSCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PWCCAPOPNIGHTS_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_PWCCAPOPNIGHTS_STR-MANDT sy-vline 
WA_PWCCAPOPNIGHTS_STR-WORKCENTERINTERNALID sy-vline 
WA_PWCCAPOPNIGHTS_STR-WORKCENTERTYPECODE sy-vline 
WA_PWCCAPOPNIGHTS_STR-CAPACITYCATEGORYALLOCATION sy-vline 
WA_PWCCAPOPNIGHTS_STR-CAPACITYINTERNALID sy-vline 
WA_PWCCAPOPNIGHTS_STR-ORDERID sy-vline 
WA_PWCCAPOPNIGHTS_STR-SHIFTNAME sy-vline 
WA_PWCCAPOPNIGHTS_STR-WEEKDAY sy-vline 
WA_PWCCAPOPNIGHTS_STR-VALIDITYBEGINDATE sy-vline 
WA_PWCCAPOPNIGHTS_STR-VALIDITYENDDATE sy-vline 
WA_PWCCAPOPNIGHTS_STR-AVAILABLECAPACITYSHIFT sy-vline 
WA_PWCCAPOPNIGHTS_STR-CAPACITYACTIVEVERSION sy-vline 
WA_PWCCAPOPNIGHTS_STR-PLANT sy-vline 
WA_PWCCAPOPNIGHTS_STR-MRPCONTROLLER sy-vline 
WA_PWCCAPOPNIGHTS_STR-WORKCENTER sy-vline 
WA_PWCCAPOPNIGHTS_STR-MATERIAL sy-vline 
WA_PWCCAPOPNIGHTS_STR-CAPACITYREQUIREMENT sy-vline 
WA_PWCCAPOPNIGHTS_STR-WORKCENTERRESPONSIBLE sy-vline 
WA_PWCCAPOPNIGHTS_STR-ORDERCATEGORY sy-vline 
WA_PWCCAPOPNIGHTS_STR-WORKCENTERCATEGORYCODE sy-vline 
WA_PWCCAPOPNIGHTS_STR-CAPACITYREQUIREMENTORIGIN sy-vline 
WA_PWCCAPOPNIGHTS_STR-OPERATION sy-vline 
WA_PWCCAPOPNIGHTS_STR-CAPACITYREQUIREMENTUNIT sy-vline 
WA_PWCCAPOPNIGHTS_STR-ORDERINTERNALID sy-vline 
WA_PWCCAPOPNIGHTS_STR-ORDERTYPE sy-vline 
WA_PWCCAPOPNIGHTS_STR-PRODUCTIONVERSION sy-vline 
WA_PWCCAPOPNIGHTS_STR-ORDERPLANNEDTOTALQTY sy-vline 
WA_PWCCAPOPNIGHTS_STR-BASEUNIT sy-vline 
WA_PWCCAPOPNIGHTS_STR-AVAILABLECAPACITYINTERVALDURN sy-vline 
WA_PWCCAPOPNIGHTS_STR-TOTOPERATINGDURATIONINSECONDS sy-vline 
WA_PWCCAPOPNIGHTS_STR-OPERATINGDURATIONINSECONDS sy-vline 
WA_PWCCAPOPNIGHTS_STR-CAPACITYSTARTTIME sy-vline 
WA_PWCCAPOPNIGHTS_STR-CAPACITYENDTIME sy-vline 
WA_PWCCAPOPNIGHTS_STR-NIGHTSPLITDATE sy-vline 
WA_PWCCAPOPNIGHTS_STR-WORKDAYRULE sy-vline 
WA_PWCCAPOPNIGHTS_STR-FACTORYCALENDAR sy-vline 
WA_PWCCAPOPNIGHTS_STR-OPERATIONPLANNINGSTATUSCODE sy-vline 
WA_PWCCAPOPNIGHTS_STR-OPERATIONLATESTSTARTDATE sy-vline 
WA_PWCCAPOPNIGHTS_STR-OPERATIONLATESTSTARTTIME sy-vline 
WA_PWCCAPOPNIGHTS_STR-OPERATIONLATESTENDDATE sy-vline 
WA_PWCCAPOPNIGHTS_STR-OPERATIONLATESTENDTIME sy-vline 
WA_PWCCAPOPNIGHTS_STR-OPLTSTSCHEDLDEXECSTRTTME sy-vline 
WA_PWCCAPOPNIGHTS_STR-OPLTSTSCHEDLDEXECENDTME sy-vline 
WA_PWCCAPOPNIGHTS_STR-OPLTSTSCHEDLDPROCGSTRTDTE sy-vline 
WA_PWCCAPOPNIGHTS_STR-OPLTSTSCHEDLDPROCGSTRTTME sy-vline 
WA_PWCCAPOPNIGHTS_STR-OPLTSTSCHEDLDTRDWNSTRTDTE sy-vline 
WA_PWCCAPOPNIGHTS_STR-OPLTSTSCHEDLDTRDWNSTRTTME sy-vline 
WA_PWCCAPOPNIGHTS_STR-REMAININGCAPREQOPSEGSETUPDURN sy-vline 
WA_PWCCAPOPNIGHTS_STR-REMAININGCAPREQOPSEGPROCGDURN sy-vline 
WA_PWCCAPOPNIGHTS_STR-REMAININGCAPREQOPSEGTRDWNDURN sy-vline 
WA_PWCCAPOPNIGHTS_STR-CAPACITYREQUIREMENTSAREDTMND sy-vline 
WA_PWCCAPOPNIGHTS_STR-TOTREQUIREMENTINSECONDS sy-vline 
WA_PWCCAPOPNIGHTS_STR-ORDERSTATUSCODE sy-vline 
WA_PWCCAPOPNIGHTS_STR-ORDERFIRMINGSTATUSCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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