ABAP Select data from SAP table PWORKCTRCAPNIGHT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PWORKCTRCAPNIGHT
*  INTO TABLE @DATA(IT_PWORKCTRCAPNIGHT2).
*--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_PWORKCTRCAPNIGHT INDEX 1 INTO DATA(WA_PWORKCTRCAPNIGHT2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PWORKCTRCAPNIGHT-VALIDITYENDDATE, sy-vline,
  WA_PWORKCTRCAPNIGHT-WEEKDAY, sy-vline,
  WA_PWORKCTRCAPNIGHT-AVAILABLECAPACITYSHIFT, sy-vline,
  WA_PWORKCTRCAPNIGHT-CAPACITYACTIVEVERSION, sy-vline,
  WA_PWORKCTRCAPNIGHT-SHIFTNAME, sy-vline,
  WA_PWORKCTRCAPNIGHT-WORKCENTER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PWORKCTRCAPNIGHT 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_PWORKCTRCAPNIGHT 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_PWORKCTRCAPNIGHT INTO WA_PWORKCTRCAPNIGHT.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PWORKCTRCAPNIGHT_STR, 
MANDT TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
CAPACITYCATEGORYALLOCATION TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
VALIDITYENDDATE TYPE STRING,
WEEKDAY TYPE STRING,
AVAILABLECAPACITYSHIFT TYPE STRING,
CAPACITYACTIVEVERSION TYPE STRING,
SHIFTNAME TYPE STRING,
WORKCENTER TYPE STRING,
PLANT TYPE STRING,
FACTORYCALENDAR TYPE STRING,
WORKCENTERRESPONSIBLE TYPE STRING,
WORKCENTERDESC TYPE STRING,
WORKCENTERCATEGORYCODE TYPE STRING,
CAPACITYCATEGORYCODE TYPE STRING,
CAPACITYCATEGORYNAME TYPE STRING,
CAPACITY TYPE STRING,
CAPACITYRESPONSIBLEPLANNER TYPE STRING,
CAPACITYSTARTTIME TYPE STRING,
VALIDITYBEGINDATE TYPE STRING,
NIGHTSPLITDATE TYPE STRING,
AVAILABLECAPACITYINTERVALDURN TYPE STRING,
WORKDAYRULE TYPE STRING,
CAPACITYENDTIME TYPE STRING,
TOTOPERATINGDURATIONINSECONDS TYPE STRING,
OPERATINGDURATIONINSECONDS TYPE STRING,
CAPACITYBREAKDURATION TYPE STRING,
CAPACITYNUMBEROFCAPACITIES TYPE STRING,
CAPACITYPLANUTILIZATIONPERCENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PWORKCTRCAPNIGHT_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_PWORKCTRCAPNIGHT_STR-MANDT sy-vline 
WA_PWORKCTRCAPNIGHT_STR-WORKCENTERINTERNALID sy-vline 
WA_PWORKCTRCAPNIGHT_STR-WORKCENTERTYPECODE sy-vline 
WA_PWORKCTRCAPNIGHT_STR-CAPACITYCATEGORYALLOCATION sy-vline 
WA_PWORKCTRCAPNIGHT_STR-CAPACITYINTERNALID sy-vline 
WA_PWORKCTRCAPNIGHT_STR-VALIDITYENDDATE sy-vline 
WA_PWORKCTRCAPNIGHT_STR-WEEKDAY sy-vline 
WA_PWORKCTRCAPNIGHT_STR-AVAILABLECAPACITYSHIFT sy-vline 
WA_PWORKCTRCAPNIGHT_STR-CAPACITYACTIVEVERSION sy-vline 
WA_PWORKCTRCAPNIGHT_STR-SHIFTNAME sy-vline 
WA_PWORKCTRCAPNIGHT_STR-WORKCENTER sy-vline 
WA_PWORKCTRCAPNIGHT_STR-PLANT sy-vline 
WA_PWORKCTRCAPNIGHT_STR-FACTORYCALENDAR sy-vline 
WA_PWORKCTRCAPNIGHT_STR-WORKCENTERRESPONSIBLE sy-vline 
WA_PWORKCTRCAPNIGHT_STR-WORKCENTERDESC sy-vline 
WA_PWORKCTRCAPNIGHT_STR-WORKCENTERCATEGORYCODE sy-vline 
WA_PWORKCTRCAPNIGHT_STR-CAPACITYCATEGORYCODE sy-vline 
WA_PWORKCTRCAPNIGHT_STR-CAPACITYCATEGORYNAME sy-vline 
WA_PWORKCTRCAPNIGHT_STR-CAPACITY sy-vline 
WA_PWORKCTRCAPNIGHT_STR-CAPACITYRESPONSIBLEPLANNER sy-vline 
WA_PWORKCTRCAPNIGHT_STR-CAPACITYSTARTTIME sy-vline 
WA_PWORKCTRCAPNIGHT_STR-VALIDITYBEGINDATE sy-vline 
WA_PWORKCTRCAPNIGHT_STR-NIGHTSPLITDATE sy-vline 
WA_PWORKCTRCAPNIGHT_STR-AVAILABLECAPACITYINTERVALDURN sy-vline 
WA_PWORKCTRCAPNIGHT_STR-WORKDAYRULE sy-vline 
WA_PWORKCTRCAPNIGHT_STR-CAPACITYENDTIME sy-vline 
WA_PWORKCTRCAPNIGHT_STR-TOTOPERATINGDURATIONINSECONDS sy-vline 
WA_PWORKCTRCAPNIGHT_STR-OPERATINGDURATIONINSECONDS sy-vline 
WA_PWORKCTRCAPNIGHT_STR-CAPACITYBREAKDURATION sy-vline 
WA_PWORKCTRCAPNIGHT_STR-CAPACITYNUMBEROFCAPACITIES sy-vline 
WA_PWORKCTRCAPNIGHT_STR-CAPACITYPLANUTILIZATIONPERCENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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