ABAP Select data from SAP table PCAPEVALCAPDCMLS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCAPEVALCAPDCMLS
*  INTO TABLE @DATA(IT_PCAPEVALCAPDCMLS2).
*--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_PCAPEVALCAPDCMLS INDEX 1 INTO DATA(WA_PCAPEVALCAPDCMLS2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCAPEVALCAPDCMLS-CAPACITYEVALUATIONTIMEPERIOD, sy-vline,
  WA_PCAPEVALCAPDCMLS-SHIFTNAME, sy-vline,
  WA_PCAPEVALCAPDCMLS-SHIFTDEFINITION, sy-vline,
  WA_PCAPEVALCAPDCMLS-SHIFTNUMBER, sy-vline,
  WA_PCAPEVALCAPDCMLS-PLANT, sy-vline,
  WA_PCAPEVALCAPDCMLS-WORKCENTER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCAPEVALCAPDCMLS 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_PCAPEVALCAPDCMLS 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_PCAPEVALCAPDCMLS INTO WA_PCAPEVALCAPDCMLS.


*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_PCAPEVALCAPDCMLS-WORKCENTERCAPACITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCAPEVALCAPDCMLS-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_PCAPEVALCAPDCMLS_STR, 
MANDT TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
CAPACITYCATEGORYALLOCATION TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
CAPACITYEVALUATIONTIMEPERIOD TYPE STRING,
SHIFTNAME TYPE STRING,
SHIFTDEFINITION TYPE STRING,
SHIFTNUMBER TYPE STRING,
PLANT TYPE STRING,
WORKCENTER TYPE STRING,
WORKCENTERRESPONSIBLE TYPE STRING,
WORKCENTERCAPACITYUNIT TYPE STRING,
WORKCENTERCAPUNITTEXT TYPE STRING,
WORKCENTERDESC TYPE STRING,
CAPACITYRESPONSIBLEPLANNER TYPE STRING,
CAPACITYCATEGORYCODE TYPE STRING,
CAPACITYCATEGORYNAME TYPE STRING,
CALENDARDATE TYPE STRING,
CALENDARWEEK TYPE STRING,
CAPACITYREQUIREMENTORIGIN TYPE STRING,
ISNONWORKINGDAY TYPE STRING,
ISMAINTAINED TYPE STRING,
CAPACITYTEXT TYPE STRING,
BASEUNIT TYPE STRING,
OPERATIONPLANNINGSTATUSCODE TYPE STRING,
ORDERSTATUSCODE TYPE STRING,
WORKCENTERAVAILABLECAPACITY TYPE STRING,
WORKCENTERCAPACITYREQUIREMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCAPEVALCAPDCMLS_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_PCAPEVALCAPDCMLS_STR-MANDT sy-vline 
WA_PCAPEVALCAPDCMLS_STR-WORKCENTERINTERNALID sy-vline 
WA_PCAPEVALCAPDCMLS_STR-WORKCENTERTYPECODE sy-vline 
WA_PCAPEVALCAPDCMLS_STR-CAPACITYCATEGORYALLOCATION sy-vline 
WA_PCAPEVALCAPDCMLS_STR-CAPACITYINTERNALID sy-vline 
WA_PCAPEVALCAPDCMLS_STR-CAPACITYEVALUATIONTIMEPERIOD sy-vline 
WA_PCAPEVALCAPDCMLS_STR-SHIFTNAME sy-vline 
WA_PCAPEVALCAPDCMLS_STR-SHIFTDEFINITION sy-vline 
WA_PCAPEVALCAPDCMLS_STR-SHIFTNUMBER sy-vline 
WA_PCAPEVALCAPDCMLS_STR-PLANT sy-vline 
WA_PCAPEVALCAPDCMLS_STR-WORKCENTER sy-vline 
WA_PCAPEVALCAPDCMLS_STR-WORKCENTERRESPONSIBLE sy-vline 
WA_PCAPEVALCAPDCMLS_STR-WORKCENTERCAPACITYUNIT sy-vline 
WA_PCAPEVALCAPDCMLS_STR-WORKCENTERCAPUNITTEXT sy-vline 
WA_PCAPEVALCAPDCMLS_STR-WORKCENTERDESC sy-vline 
WA_PCAPEVALCAPDCMLS_STR-CAPACITYRESPONSIBLEPLANNER sy-vline 
WA_PCAPEVALCAPDCMLS_STR-CAPACITYCATEGORYCODE sy-vline 
WA_PCAPEVALCAPDCMLS_STR-CAPACITYCATEGORYNAME sy-vline 
WA_PCAPEVALCAPDCMLS_STR-CALENDARDATE sy-vline 
WA_PCAPEVALCAPDCMLS_STR-CALENDARWEEK sy-vline 
WA_PCAPEVALCAPDCMLS_STR-CAPACITYREQUIREMENTORIGIN sy-vline 
WA_PCAPEVALCAPDCMLS_STR-ISNONWORKINGDAY sy-vline 
WA_PCAPEVALCAPDCMLS_STR-ISMAINTAINED sy-vline 
WA_PCAPEVALCAPDCMLS_STR-CAPACITYTEXT sy-vline 
WA_PCAPEVALCAPDCMLS_STR-BASEUNIT sy-vline 
WA_PCAPEVALCAPDCMLS_STR-OPERATIONPLANNINGSTATUSCODE sy-vline 
WA_PCAPEVALCAPDCMLS_STR-ORDERSTATUSCODE sy-vline 
WA_PCAPEVALCAPDCMLS_STR-WORKCENTERAVAILABLECAPACITY sy-vline 
WA_PCAPEVALCAPDCMLS_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.