ABAP Select data from SAP table PWCCAPEVALSHIFT into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PWCCAPEVALSHIFT 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 PWCCAPEVALSHIFT. 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 PWCCAPEVALSHIFT 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_PWCCAPEVALSHIFT TYPE STANDARD TABLE OF PWCCAPEVALSHIFT,
      WA_PWCCAPEVALSHIFT TYPE PWCCAPEVALSHIFT,
      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: <PWCCAPEVALSHIFT> TYPE PWCCAPEVALSHIFT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PWCCAPEVALSHIFT
*  INTO TABLE @DATA(IT_PWCCAPEVALSHIFT2).
*--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_PWCCAPEVALSHIFT INDEX 1 INTO DATA(WA_PWCCAPEVALSHIFT2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PWCCAPEVALSHIFT-CALENDARDATE, sy-vline,
  WA_PWCCAPEVALSHIFT-SHIFTNAME, sy-vline,
  WA_PWCCAPEVALSHIFT-PLANT, sy-vline,
  WA_PWCCAPEVALSHIFT-WORKCENTER, sy-vline,
  WA_PWCCAPEVALSHIFT-CALENDARWEEK, sy-vline,
  WA_PWCCAPEVALSHIFT-CALENDARMONTH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PWCCAPEVALSHIFT 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_PWCCAPEVALSHIFT 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_PWCCAPEVALSHIFT INTO WA_PWCCAPEVALSHIFT.


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

*Conversion exit CUNIT, internal->external for field WORKCENTERCAPACITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PWCCAPEVALSHIFT-WORKCENTERCAPACITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWCCAPEVALSHIFT-WORKCENTERCAPACITYUNIT.
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_PWCCAPEVALSHIFT_STR, 
MANDT TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
CAPACITYCATEGORYALLOCATION TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
CALENDARDATE TYPE STRING,
SHIFTNAME TYPE STRING,
PLANT TYPE STRING,
WORKCENTER TYPE STRING,
CALENDARWEEK TYPE STRING,
CALENDARMONTH TYPE STRING,
CALENDARYEAR TYPE STRING,
CAPACITYREQUIREMENT TYPE STRING,
OPERATION TYPE STRING,
WORKCENTERCAPACITYUNIT TYPE STRING,
CAPACITYCATEGORYCODE TYPE STRING,
CAPACITY TYPE STRING,
CAPACITYRESPONSIBLEPLANNER TYPE STRING,
WORKCENTERRESPONSIBLE TYPE STRING,
WORKCENTERCATEGORYCODE TYPE STRING,
CAPACITYSTARTTIME TYPE STRING,
CAPACITYENDTIME TYPE STRING,
WORKCENTERAVAILABLECAPACITY TYPE STRING,
WORKCENTERCAPACITYREQUIREMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PWCCAPEVALSHIFT_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_PWCCAPEVALSHIFT_STR-MANDT sy-vline 
WA_PWCCAPEVALSHIFT_STR-WORKCENTERINTERNALID sy-vline 
WA_PWCCAPEVALSHIFT_STR-WORKCENTERTYPECODE sy-vline 
WA_PWCCAPEVALSHIFT_STR-CAPACITYCATEGORYALLOCATION sy-vline 
WA_PWCCAPEVALSHIFT_STR-CAPACITYINTERNALID sy-vline 
WA_PWCCAPEVALSHIFT_STR-CALENDARDATE sy-vline 
WA_PWCCAPEVALSHIFT_STR-SHIFTNAME sy-vline 
WA_PWCCAPEVALSHIFT_STR-PLANT sy-vline 
WA_PWCCAPEVALSHIFT_STR-WORKCENTER sy-vline 
WA_PWCCAPEVALSHIFT_STR-CALENDARWEEK sy-vline 
WA_PWCCAPEVALSHIFT_STR-CALENDARMONTH sy-vline 
WA_PWCCAPEVALSHIFT_STR-CALENDARYEAR sy-vline 
WA_PWCCAPEVALSHIFT_STR-CAPACITYREQUIREMENT sy-vline 
WA_PWCCAPEVALSHIFT_STR-OPERATION sy-vline 
WA_PWCCAPEVALSHIFT_STR-WORKCENTERCAPACITYUNIT sy-vline 
WA_PWCCAPEVALSHIFT_STR-CAPACITYCATEGORYCODE sy-vline 
WA_PWCCAPEVALSHIFT_STR-CAPACITY sy-vline 
WA_PWCCAPEVALSHIFT_STR-CAPACITYRESPONSIBLEPLANNER sy-vline 
WA_PWCCAPEVALSHIFT_STR-WORKCENTERRESPONSIBLE sy-vline 
WA_PWCCAPEVALSHIFT_STR-WORKCENTERCATEGORYCODE sy-vline 
WA_PWCCAPEVALSHIFT_STR-CAPACITYSTARTTIME sy-vline 
WA_PWCCAPEVALSHIFT_STR-CAPACITYENDTIME sy-vline 
WA_PWCCAPEVALSHIFT_STR-WORKCENTERAVAILABLECAPACITY sy-vline 
WA_PWCCAPEVALSHIFT_STR-WORKCENTERCAPACITYREQUIREMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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