ABAP Select data from SAP table CWRKCTRMNTRSCHED into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CWRKCTRMNTRSCHED
*  INTO TABLE @DATA(IT_CWRKCTRMNTRSCHED2).
*--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_CWRKCTRMNTRSCHED INDEX 1 INTO DATA(WA_CWRKCTRMNTRSCHED2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CWRKCTRMNTRSCHED>-MANDT = 1.
<CWRKCTRMNTRSCHED>-SIMULATIONSESSIONID = 1.
<CWRKCTRMNTRSCHED>-WORKCENTERINTERNALID = 1.
<CWRKCTRMNTRSCHED>-WORKCENTERTYPECODE = 1.
<CWRKCTRMNTRSCHED>-WRKCTRNODEID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CWRKCTRMNTRSCHED-WORKCENTERTEXT, sy-vline,
  WA_CWRKCTRMNTRSCHED-WORKCENTERCATEGORYCODE, sy-vline,
  WA_CWRKCTRMNTRSCHED-WORKCENTERCATEGORYNAME, sy-vline,
  WA_CWRKCTRMNTRSCHED-WORKCENTER, sy-vline,
  WA_CWRKCTRMNTRSCHED-WORKCENTERRESPONSIBLENAME, sy-vline,
  WA_CWRKCTRMNTRSCHED-PRODUCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CWRKCTRMNTRSCHED 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_CWRKCTRMNTRSCHED 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_CWRKCTRMNTRSCHED INTO WA_CWRKCTRMNTRSCHED.


*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 PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CWRKCTRMNTRSCHED-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWRKCTRMNTRSCHED-PRODUCT.
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_CWRKCTRMNTRSCHED_STR, 
MANDT TYPE STRING,
SIMULATIONSESSIONID TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
WRKCTRNODEID TYPE STRING,
WORKCENTERTEXT TYPE STRING,
WORKCENTERCATEGORYCODE TYPE STRING,
WORKCENTERCATEGORYNAME TYPE STRING,
WORKCENTER TYPE STRING,
WORKCENTERRESPONSIBLENAME TYPE STRING,
PRODUCT TYPE STRING,
ORDERCATEGORY TYPE STRING,
PRODUCTGROUP TYPE STRING,
PLANT TYPE STRING,
PLANTNAME TYPE STRING,
MRPAREA TYPE STRING,
MRPCONTROLLER TYPE STRING,
WORKCENTERRESPONSIBLE TYPE STRING,
CAPACITYRESPONSIBLEPLANNER TYPE STRING,
WORKCENTERGROUP TYPE STRING,
OPERATIONPLANNINGSTATUSCODE TYPE STRING,
OPERATIONLATESTSTARTDATE TYPE STRING,
OPERATIONLATESTENDDATE TYPE STRING,
HORIZONSTARTDATE TYPE STRING,
HORIZONENDDATE TYPE STRING,
CAPEVALSTARTDATE TYPE STRING,
OPERATIONSETUPGROUP TYPE STRING,
OPERATIONSETUPGROUPCATEGORY TYPE STRING,
SCHEDPRODNAPPNAME TYPE STRING,
CAPOVERLOADINPERCENT TYPE STRING,
WRKCTRNODELEVELVALUE TYPE STRING,
WRKCTRDRILLSTATE TYPE STRING,
NUMBEROFOVERLAPPINGORDERS TYPE STRING,
PARENTWRKCTRID TYPE STRING,
WORKCENTERISPACEMAKER TYPE STRING,
WRKCTRORDERISRELEVANT TYPE STRING,
SCHEDULEDORDERISLOADED TYPE STRING,
PRODUCTIONORDERSEARCHRELEVANCE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CWRKCTRMNTRSCHED_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_CWRKCTRMNTRSCHED_STR-MANDT sy-vline 
WA_CWRKCTRMNTRSCHED_STR-SIMULATIONSESSIONID sy-vline 
WA_CWRKCTRMNTRSCHED_STR-WORKCENTERINTERNALID sy-vline 
WA_CWRKCTRMNTRSCHED_STR-WORKCENTERTYPECODE sy-vline 
WA_CWRKCTRMNTRSCHED_STR-WRKCTRNODEID sy-vline 
WA_CWRKCTRMNTRSCHED_STR-WORKCENTERTEXT sy-vline 
WA_CWRKCTRMNTRSCHED_STR-WORKCENTERCATEGORYCODE sy-vline 
WA_CWRKCTRMNTRSCHED_STR-WORKCENTERCATEGORYNAME sy-vline 
WA_CWRKCTRMNTRSCHED_STR-WORKCENTER sy-vline 
WA_CWRKCTRMNTRSCHED_STR-WORKCENTERRESPONSIBLENAME sy-vline 
WA_CWRKCTRMNTRSCHED_STR-PRODUCT sy-vline 
WA_CWRKCTRMNTRSCHED_STR-ORDERCATEGORY sy-vline 
WA_CWRKCTRMNTRSCHED_STR-PRODUCTGROUP sy-vline 
WA_CWRKCTRMNTRSCHED_STR-PLANT sy-vline 
WA_CWRKCTRMNTRSCHED_STR-PLANTNAME sy-vline 
WA_CWRKCTRMNTRSCHED_STR-MRPAREA sy-vline 
WA_CWRKCTRMNTRSCHED_STR-MRPCONTROLLER sy-vline 
WA_CWRKCTRMNTRSCHED_STR-WORKCENTERRESPONSIBLE sy-vline 
WA_CWRKCTRMNTRSCHED_STR-CAPACITYRESPONSIBLEPLANNER sy-vline 
WA_CWRKCTRMNTRSCHED_STR-WORKCENTERGROUP sy-vline 
WA_CWRKCTRMNTRSCHED_STR-OPERATIONPLANNINGSTATUSCODE sy-vline 
WA_CWRKCTRMNTRSCHED_STR-OPERATIONLATESTSTARTDATE sy-vline 
WA_CWRKCTRMNTRSCHED_STR-OPERATIONLATESTENDDATE sy-vline 
WA_CWRKCTRMNTRSCHED_STR-HORIZONSTARTDATE sy-vline 
WA_CWRKCTRMNTRSCHED_STR-HORIZONENDDATE sy-vline 
WA_CWRKCTRMNTRSCHED_STR-CAPEVALSTARTDATE sy-vline 
WA_CWRKCTRMNTRSCHED_STR-OPERATIONSETUPGROUP sy-vline 
WA_CWRKCTRMNTRSCHED_STR-OPERATIONSETUPGROUPCATEGORY sy-vline 
WA_CWRKCTRMNTRSCHED_STR-SCHEDPRODNAPPNAME sy-vline 
WA_CWRKCTRMNTRSCHED_STR-CAPOVERLOADINPERCENT sy-vline 
WA_CWRKCTRMNTRSCHED_STR-WRKCTRNODELEVELVALUE sy-vline 
WA_CWRKCTRMNTRSCHED_STR-WRKCTRDRILLSTATE sy-vline 
WA_CWRKCTRMNTRSCHED_STR-NUMBEROFOVERLAPPINGORDERS sy-vline 
WA_CWRKCTRMNTRSCHED_STR-PARENTWRKCTRID sy-vline 
WA_CWRKCTRMNTRSCHED_STR-WORKCENTERISPACEMAKER sy-vline 
WA_CWRKCTRMNTRSCHED_STR-WRKCTRORDERISRELEVANT sy-vline 
WA_CWRKCTRMNTRSCHED_STR-SCHEDULEDORDERISLOADED sy-vline 
WA_CWRKCTRMNTRSCHED_STR-PRODUCTIONORDERSEARCHRELEVANCE sy-vline      INTO ld_text SEPARATED BY SPACE.

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