ABAP Select data from SAP table IMMCPOSCHDULELN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMMCPOSCHDULELN
*  INTO TABLE @DATA(IT_IMMCPOSCHDULELN2).
*--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_IMMCPOSCHDULELN INDEX 1 INTO DATA(WA_IMMCPOSCHDULELN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMMCPOSCHDULELN>-MANDT = 1.
<IMMCPOSCHDULELN>-PURCHASEORDER = 1.
<IMMCPOSCHDULELN>-PURCHASEORDERITEM = 1.
<IMMCPOSCHDULELN>-SCHEDULELINE = 1.
<IMMCPOSCHDULELN>-EXTSOURCESYSTEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMMCPOSCHDULELN-DELIVDATECATEGORY, sy-vline,
  WA_IMMCPOSCHDULELN-SCHEDULELINEDELIVERYDATE, sy-vline,
  WA_IMMCPOSCHDULELN-SCHEDLINESTSCDELIVERYDATE, sy-vline,
  WA_IMMCPOSCHDULELN-PERFORMANCEPERIODSTARTDATE, sy-vline,
  WA_IMMCPOSCHDULELN-PERFORMANCEPERIODENDDATE, sy-vline,
  WA_IMMCPOSCHDULELN-SCHEDULELINEDELIVERYTIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMMCPOSCHDULELN 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_IMMCPOSCHDULELN 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_IMMCPOSCHDULELN INTO WA_IMMCPOSCHDULELN.


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

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

*Conversion exit CUNIT, internal->external for field PURCHASEORDERQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IMMCPOSCHDULELN-PURCHASEORDERQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMMCPOSCHDULELN-PURCHASEORDERQUANTITYUNIT.
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_IMMCPOSCHDULELN_STR, 
MANDT TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
SCHEDULELINE TYPE STRING,
EXTSOURCESYSTEM TYPE STRING,
DELIVDATECATEGORY TYPE STRING,
SCHEDULELINEDELIVERYDATE TYPE STRING,
SCHEDLINESTSCDELIVERYDATE TYPE STRING,
PERFORMANCEPERIODSTARTDATE TYPE STRING,
PERFORMANCEPERIODENDDATE TYPE STRING,
SCHEDULELINEDELIVERYTIME TYPE STRING,
SCHEDULELINEORDERQUANTITY TYPE STRING,
ROUGHGOODSRECEIPTQTY TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
SOURCEOFCREATION TYPE STRING,
PREVDELIVQTYOFSCHEDULELINE TYPE STRING,
NOOFREMINDERSOFSCHEDULELINE TYPE STRING,
SCHEDULELINEISFIXED TYPE STRING,
SCHEDULELINECOMMITTEDQUANTITY TYPE STRING,
RESERVATION TYPE STRING,
PRODUCTAVAILABILITYDATE TYPE STRING,
MATERIALSTAGINGTIME TYPE STRING,
TRANSPORTATIONPLANNINGDATE TYPE STRING,
TRANSPORTATIONPLANNINGTIME TYPE STRING,
LOADINGDATE TYPE STRING,
LOADINGTIME TYPE STRING,
GOODSISSUEDATE TYPE STRING,
GOODSISSUETIME TYPE STRING,
STOLATESTPOSSIBLEGRDATE TYPE STRING,
STOLATESTPOSSIBLEGRTIME TYPE STRING,
GOODSRECEIPTQUANTITY TYPE STRING,
STOCKTRANSFERDELIVEREDQUANTITY TYPE STRING,
SCHEDULELINEISSUEDQUANTITY TYPE STRING,
BATCH TYPE STRING,
SCHEDULELINEORDERDATE TYPE STRING,
SCHEDULINGAGREEMENTRELEASETYPE TYPE STRING,
COMMITTEDDELIVERYDATE TYPE STRING,
SCHEDLINEPREVDELIVDATE TYPE STRING,
SCHEDGLINEDATAAGINGFILTERDATE TYPE STRING,
OPENPURCHASEORDERQUANTITY TYPE STRING,
PURCHASEORDERQUANTITYUNIT TYPE STRING,
CURRENCY TYPE STRING,
SCHEDULELINEOPENQUANTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMMCPOSCHDULELN_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_IMMCPOSCHDULELN_STR-MANDT sy-vline 
WA_IMMCPOSCHDULELN_STR-PURCHASEORDER sy-vline 
WA_IMMCPOSCHDULELN_STR-PURCHASEORDERITEM sy-vline 
WA_IMMCPOSCHDULELN_STR-SCHEDULELINE sy-vline 
WA_IMMCPOSCHDULELN_STR-EXTSOURCESYSTEM sy-vline 
WA_IMMCPOSCHDULELN_STR-DELIVDATECATEGORY sy-vline 
WA_IMMCPOSCHDULELN_STR-SCHEDULELINEDELIVERYDATE sy-vline 
WA_IMMCPOSCHDULELN_STR-SCHEDLINESTSCDELIVERYDATE sy-vline 
WA_IMMCPOSCHDULELN_STR-PERFORMANCEPERIODSTARTDATE sy-vline 
WA_IMMCPOSCHDULELN_STR-PERFORMANCEPERIODENDDATE sy-vline 
WA_IMMCPOSCHDULELN_STR-SCHEDULELINEDELIVERYTIME sy-vline 
WA_IMMCPOSCHDULELN_STR-SCHEDULELINEORDERQUANTITY sy-vline 
WA_IMMCPOSCHDULELN_STR-ROUGHGOODSRECEIPTQTY sy-vline 
WA_IMMCPOSCHDULELN_STR-PURCHASEREQUISITION sy-vline 
WA_IMMCPOSCHDULELN_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_IMMCPOSCHDULELN_STR-SOURCEOFCREATION sy-vline 
WA_IMMCPOSCHDULELN_STR-PREVDELIVQTYOFSCHEDULELINE sy-vline 
WA_IMMCPOSCHDULELN_STR-NOOFREMINDERSOFSCHEDULELINE sy-vline 
WA_IMMCPOSCHDULELN_STR-SCHEDULELINEISFIXED sy-vline 
WA_IMMCPOSCHDULELN_STR-SCHEDULELINECOMMITTEDQUANTITY sy-vline 
WA_IMMCPOSCHDULELN_STR-RESERVATION sy-vline 
WA_IMMCPOSCHDULELN_STR-PRODUCTAVAILABILITYDATE sy-vline 
WA_IMMCPOSCHDULELN_STR-MATERIALSTAGINGTIME sy-vline 
WA_IMMCPOSCHDULELN_STR-TRANSPORTATIONPLANNINGDATE sy-vline 
WA_IMMCPOSCHDULELN_STR-TRANSPORTATIONPLANNINGTIME sy-vline 
WA_IMMCPOSCHDULELN_STR-LOADINGDATE sy-vline 
WA_IMMCPOSCHDULELN_STR-LOADINGTIME sy-vline 
WA_IMMCPOSCHDULELN_STR-GOODSISSUEDATE sy-vline 
WA_IMMCPOSCHDULELN_STR-GOODSISSUETIME sy-vline 
WA_IMMCPOSCHDULELN_STR-STOLATESTPOSSIBLEGRDATE sy-vline 
WA_IMMCPOSCHDULELN_STR-STOLATESTPOSSIBLEGRTIME sy-vline 
WA_IMMCPOSCHDULELN_STR-GOODSRECEIPTQUANTITY sy-vline 
WA_IMMCPOSCHDULELN_STR-STOCKTRANSFERDELIVEREDQUANTITY sy-vline 
WA_IMMCPOSCHDULELN_STR-SCHEDULELINEISSUEDQUANTITY sy-vline 
WA_IMMCPOSCHDULELN_STR-BATCH sy-vline 
WA_IMMCPOSCHDULELN_STR-SCHEDULELINEORDERDATE sy-vline 
WA_IMMCPOSCHDULELN_STR-SCHEDULINGAGREEMENTRELEASETYPE sy-vline 
WA_IMMCPOSCHDULELN_STR-COMMITTEDDELIVERYDATE sy-vline 
WA_IMMCPOSCHDULELN_STR-SCHEDLINEPREVDELIVDATE sy-vline 
WA_IMMCPOSCHDULELN_STR-SCHEDGLINEDATAAGINGFILTERDATE sy-vline 
WA_IMMCPOSCHDULELN_STR-OPENPURCHASEORDERQUANTITY sy-vline 
WA_IMMCPOSCHDULELN_STR-PURCHASEORDERQUANTITYUNIT sy-vline 
WA_IMMCPOSCHDULELN_STR-CURRENCY sy-vline 
WA_IMMCPOSCHDULELN_STR-SCHEDULELINEOPENQUANTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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