ABAP Select data from SAP table ISCHEDWLOP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISCHEDWLOP
*  INTO TABLE @DATA(IT_ISCHEDWLOP2).
*--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_ISCHEDWLOP INDEX 1 INTO DATA(WA_ISCHEDWLOP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISCHEDWLOP>-MANDT = 1.
<ISCHEDWLOP>-SIMULATIONSESSIONID = 1.
<ISCHEDWLOP>-CAPACITYREQUIREMENTITEM = 1.
<ISCHEDWLOP>-ORDERID = 1.
<ISCHEDWLOP>-CAPACITYRQMTITEMCAPACITY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISCHEDWLOP-ORDERCATEGORY, sy-vline,
  WA_ISCHEDWLOP-CAPACITYREQUIREMENT, sy-vline,
  WA_ISCHEDWLOP-OPERATION, sy-vline,
  WA_ISCHEDWLOP-PRODUCTGROUP, sy-vline,
  WA_ISCHEDWLOP-PRODUCT, sy-vline,
  WA_ISCHEDWLOP-PLANT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISCHEDWLOP 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_ISCHEDWLOP 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_ISCHEDWLOP INTO WA_ISCHEDWLOP.


*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_ISCHEDWLOP-OPERATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISCHEDWLOP-OPERATION.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field MANUFACTURINGORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISCHEDWLOP-MANUFACTURINGORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISCHEDWLOP-MANUFACTURINGORDER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLANNEDORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISCHEDWLOP-PLANNEDORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISCHEDWLOP-PLANNEDORDER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORDERIDFORUSRINTERFACE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISCHEDWLOP-ORDERIDFORUSRINTERFACE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISCHEDWLOP-ORDERIDFORUSRINTERFACE.
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_ISCHEDWLOP_STR, 
MANDT TYPE STRING,
SIMULATIONSESSIONID TYPE STRING,
CAPACITYREQUIREMENTITEM TYPE STRING,
ORDERID TYPE STRING,
CAPACITYRQMTITEMCAPACITY TYPE STRING,
ORDERCATEGORY TYPE STRING,
CAPACITYREQUIREMENT TYPE STRING,
OPERATION TYPE STRING,
PRODUCTGROUP TYPE STRING,
PRODUCT TYPE STRING,
PLANT TYPE STRING,
MRPAREA TYPE STRING,
MRPCONTROLLER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
WORKCENTER TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
WORKCENTERCATEGORYCODE TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
CAPACITYCATEGORYCODE TYPE STRING,
WORKCENTERRESPONSIBLE TYPE STRING,
CAPACITYRESPONSIBLEPLANNER TYPE STRING,
PRODUCTIONVERSION TYPE STRING,
PRODUCTIONLINE TYPE STRING,
INDUSTRYTYPE TYPE STRING,
OPERATIONPLANNINGSTATUSCODE TYPE STRING,
OPERATIONLATESTSTARTDATE TYPE STRING,
OPERATIONLATESTSTARTTIME TYPE STRING,
LTSTSCHEDLDEXECSTRTDTETME TYPE STRING,
ORDEROPERATIONSTARTDATETIME TYPE STRING,
OPERATIONLATESTENDDATE TYPE STRING,
OPERATIONLATESTENDTIME TYPE STRING,
LTSTSCHEDLDEXECENDDTETME TYPE STRING,
ORDEROPERATIONENDDATETIME TYPE STRING,
REQUIREMENTDATE TYPE STRING,
ORDERPLANNEDTOTALQTY TYPE STRING,
BASEUNIT TYPE STRING,
UNITOFMEASURE TYPE STRING,
UNITOFMEASURE_E TYPE STRING,
REMAININGCAPREQEXECUTIONDURN TYPE STRING,
SCHEDLDORDSTARTDTETME TYPE STRING,
SCHEDLDORDENDDTETME TYPE STRING,
PRODUCTIONVERSISCHGD TYPE STRING,
BOOEXPLOSIONDATE TYPE STRING,
BOMEXPLOSIONDATE TYPE STRING,
PLNDORDERPLANNEDSTARTDATE TYPE STRING,
PLNDORDERPLANNEDENDDATE TYPE STRING,
MANUFACTURINGORDER TYPE STRING,
PLANNEDORDER TYPE STRING,
MAINWORKCENTER TYPE STRING,
ORDERIDFORUSRINTERFACE TYPE STRING,
ORDERISCHANGEDINSIMULATION TYPE STRING,
STATUSCODE TYPE STRING,
ORIGINALLYSCHEDULEDSTARTDATE TYPE STRING,
ORIGINALLYSCHEDULEDENDDATE TYPE STRING,
OPERATIONSETUPGROUP TYPE STRING,
OPERATIONSETUPGROUPCATEGORY TYPE STRING,
PLANNEDORDERISFIRM TYPE STRING,
ORDERHASCONFIGURATION TYPE STRING,
PLANTCURRENTDATETIME TYPE STRING,
ORDERISOVERDUE TYPE STRING,
SCHEDULEDORDERRECEIPTDATETIME TYPE STRING,
ORDERINTERNALID TYPE STRING,
ORDEROPERATIONINTERNALID TYPE STRING,
MRPAREATEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISCHEDWLOP_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_ISCHEDWLOP_STR-MANDT sy-vline 
WA_ISCHEDWLOP_STR-SIMULATIONSESSIONID sy-vline 
WA_ISCHEDWLOP_STR-CAPACITYREQUIREMENTITEM sy-vline 
WA_ISCHEDWLOP_STR-ORDERID sy-vline 
WA_ISCHEDWLOP_STR-CAPACITYRQMTITEMCAPACITY sy-vline 
WA_ISCHEDWLOP_STR-ORDERCATEGORY sy-vline 
WA_ISCHEDWLOP_STR-CAPACITYREQUIREMENT sy-vline 
WA_ISCHEDWLOP_STR-OPERATION sy-vline 
WA_ISCHEDWLOP_STR-PRODUCTGROUP sy-vline 
WA_ISCHEDWLOP_STR-PRODUCT sy-vline 
WA_ISCHEDWLOP_STR-PLANT sy-vline 
WA_ISCHEDWLOP_STR-MRPAREA sy-vline 
WA_ISCHEDWLOP_STR-MRPCONTROLLER sy-vline 
WA_ISCHEDWLOP_STR-LASTCHANGEDATETIME sy-vline 
WA_ISCHEDWLOP_STR-WORKCENTER sy-vline 
WA_ISCHEDWLOP_STR-WORKCENTERINTERNALID sy-vline 
WA_ISCHEDWLOP_STR-WORKCENTERTYPECODE sy-vline 
WA_ISCHEDWLOP_STR-WORKCENTERCATEGORYCODE sy-vline 
WA_ISCHEDWLOP_STR-CAPACITYINTERNALID sy-vline 
WA_ISCHEDWLOP_STR-CAPACITYCATEGORYCODE sy-vline 
WA_ISCHEDWLOP_STR-WORKCENTERRESPONSIBLE sy-vline 
WA_ISCHEDWLOP_STR-CAPACITYRESPONSIBLEPLANNER sy-vline 
WA_ISCHEDWLOP_STR-PRODUCTIONVERSION sy-vline 
WA_ISCHEDWLOP_STR-PRODUCTIONLINE sy-vline 
WA_ISCHEDWLOP_STR-INDUSTRYTYPE sy-vline 
WA_ISCHEDWLOP_STR-OPERATIONPLANNINGSTATUSCODE sy-vline 
WA_ISCHEDWLOP_STR-OPERATIONLATESTSTARTDATE sy-vline 
WA_ISCHEDWLOP_STR-OPERATIONLATESTSTARTTIME sy-vline 
WA_ISCHEDWLOP_STR-LTSTSCHEDLDEXECSTRTDTETME sy-vline 
WA_ISCHEDWLOP_STR-ORDEROPERATIONSTARTDATETIME sy-vline 
WA_ISCHEDWLOP_STR-OPERATIONLATESTENDDATE sy-vline 
WA_ISCHEDWLOP_STR-OPERATIONLATESTENDTIME sy-vline 
WA_ISCHEDWLOP_STR-LTSTSCHEDLDEXECENDDTETME sy-vline 
WA_ISCHEDWLOP_STR-ORDEROPERATIONENDDATETIME sy-vline 
WA_ISCHEDWLOP_STR-REQUIREMENTDATE sy-vline 
WA_ISCHEDWLOP_STR-ORDERPLANNEDTOTALQTY sy-vline 
WA_ISCHEDWLOP_STR-BASEUNIT sy-vline 
WA_ISCHEDWLOP_STR-UNITOFMEASURE sy-vline 
WA_ISCHEDWLOP_STR-UNITOFMEASURE_E sy-vline 
WA_ISCHEDWLOP_STR-REMAININGCAPREQEXECUTIONDURN sy-vline 
WA_ISCHEDWLOP_STR-SCHEDLDORDSTARTDTETME sy-vline 
WA_ISCHEDWLOP_STR-SCHEDLDORDENDDTETME sy-vline 
WA_ISCHEDWLOP_STR-PRODUCTIONVERSISCHGD sy-vline 
WA_ISCHEDWLOP_STR-BOOEXPLOSIONDATE sy-vline 
WA_ISCHEDWLOP_STR-BOMEXPLOSIONDATE sy-vline 
WA_ISCHEDWLOP_STR-PLNDORDERPLANNEDSTARTDATE sy-vline 
WA_ISCHEDWLOP_STR-PLNDORDERPLANNEDENDDATE sy-vline 
WA_ISCHEDWLOP_STR-MANUFACTURINGORDER sy-vline 
WA_ISCHEDWLOP_STR-PLANNEDORDER sy-vline 
WA_ISCHEDWLOP_STR-MAINWORKCENTER sy-vline 
WA_ISCHEDWLOP_STR-ORDERIDFORUSRINTERFACE sy-vline 
WA_ISCHEDWLOP_STR-ORDERISCHANGEDINSIMULATION sy-vline 
WA_ISCHEDWLOP_STR-STATUSCODE sy-vline 
WA_ISCHEDWLOP_STR-ORIGINALLYSCHEDULEDSTARTDATE sy-vline 
WA_ISCHEDWLOP_STR-ORIGINALLYSCHEDULEDENDDATE sy-vline 
WA_ISCHEDWLOP_STR-OPERATIONSETUPGROUP sy-vline 
WA_ISCHEDWLOP_STR-OPERATIONSETUPGROUPCATEGORY sy-vline 
WA_ISCHEDWLOP_STR-PLANNEDORDERISFIRM sy-vline 
WA_ISCHEDWLOP_STR-ORDERHASCONFIGURATION sy-vline 
WA_ISCHEDWLOP_STR-PLANTCURRENTDATETIME sy-vline 
WA_ISCHEDWLOP_STR-ORDERISOVERDUE sy-vline 
WA_ISCHEDWLOP_STR-SCHEDULEDORDERRECEIPTDATETIME sy-vline 
WA_ISCHEDWLOP_STR-ORDERINTERNALID sy-vline 
WA_ISCHEDWLOP_STR-ORDEROPERATIONINTERNALID sy-vline 
WA_ISCHEDWLOP_STR-MRPAREATEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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