ABAP Select data from SAP table IDEMANDNOMSCHED into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDEMANDNOMSCHED
*  INTO TABLE @DATA(IT_IDEMANDNOMSCHED2).
*--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_IDEMANDNOMSCHED INDEX 1 INTO DATA(WA_IDEMANDNOMSCHED2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDEMANDNOMSCHED>-MANDT = 1.
<IDEMANDNOMSCHED>-NOMINATIONDOC = 1.
<IDEMANDNOMSCHED>-NOMINATIONDOCITEM = 1.
<IDEMANDNOMSCHED>-LOCATIONID = 1.
<IDEMANDNOMSCHED>-SCHEDULEDMATERIAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDEMANDNOMSCHED-NOMINATIONSCHEDULEDATE, sy-vline,
  WA_IDEMANDNOMSCHED-SCHEDULEDQUANTITY, sy-vline,
  WA_IDEMANDNOMSCHED-SCHEDULEDQUANTITYUNIT, sy-vline,
  WA_IDEMANDNOMSCHED-TRANSPORTSYSTEM, sy-vline,
  WA_IDEMANDNOMSCHED-TRANSPORTATIONVEHICLE, sy-vline,
  WA_IDEMANDNOMSCHED-NOMINATIONSCHEDULETYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDEMANDNOMSCHED 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_IDEMANDNOMSCHED 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_IDEMANDNOMSCHED INTO WA_IDEMANDNOMSCHED.


*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 NOMINATIONDOC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDEMANDNOMSCHED-NOMINATIONDOC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDEMANDNOMSCHED-NOMINATIONDOC.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field NOMINATIONSIMLNID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDEMANDNOMSCHED-NOMINATIONSIMLNID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDEMANDNOMSCHED-NOMINATIONSIMLNID.
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_IDEMANDNOMSCHED_STR, 
MANDT TYPE STRING,
NOMINATIONDOC TYPE STRING,
NOMINATIONDOCITEM TYPE STRING,
LOCATIONID TYPE STRING,
SCHEDULEDMATERIAL TYPE STRING,
NOMINATIONSCHEDULEDATE TYPE STRING,
SCHEDULEDQUANTITY TYPE STRING,
SCHEDULEDQUANTITYUNIT TYPE STRING,
TRANSPORTSYSTEM TYPE STRING,
TRANSPORTATIONVEHICLE TYPE STRING,
NOMINATIONSCHEDULETYPE TYPE STRING,
NOMINATIONREFERENCEDOCTYPE TYPE STRING,
NOMINATIONREFERENCEDOCUMENT TYPE STRING,
NOMINATIONREFERENCEDOCITEM TYPE STRING,
NOMINATIONEXTNUMBER TYPE STRING,
MODEOFTRANSPORT TYPE STRING,
DEMANDNOMINATIONSCHEDSRCETYPE TYPE STRING,
CREATEDBYUSER TYPE STRING,
NOMINATIONSCHEDULECREATIONDATE TYPE STRING,
NOMINATIONSIMLNID TYPE STRING,
NOMINATIONSIMLNLINEITM TYPE STRING,
NOMINATIONSIMLNVERSION TYPE STRING,
NOMINATIONDOCISBLOCKED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDEMANDNOMSCHED_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_IDEMANDNOMSCHED_STR-MANDT sy-vline 
WA_IDEMANDNOMSCHED_STR-NOMINATIONDOC sy-vline 
WA_IDEMANDNOMSCHED_STR-NOMINATIONDOCITEM sy-vline 
WA_IDEMANDNOMSCHED_STR-LOCATIONID sy-vline 
WA_IDEMANDNOMSCHED_STR-SCHEDULEDMATERIAL sy-vline 
WA_IDEMANDNOMSCHED_STR-NOMINATIONSCHEDULEDATE sy-vline 
WA_IDEMANDNOMSCHED_STR-SCHEDULEDQUANTITY sy-vline 
WA_IDEMANDNOMSCHED_STR-SCHEDULEDQUANTITYUNIT sy-vline 
WA_IDEMANDNOMSCHED_STR-TRANSPORTSYSTEM sy-vline 
WA_IDEMANDNOMSCHED_STR-TRANSPORTATIONVEHICLE sy-vline 
WA_IDEMANDNOMSCHED_STR-NOMINATIONSCHEDULETYPE sy-vline 
WA_IDEMANDNOMSCHED_STR-NOMINATIONREFERENCEDOCTYPE sy-vline 
WA_IDEMANDNOMSCHED_STR-NOMINATIONREFERENCEDOCUMENT sy-vline 
WA_IDEMANDNOMSCHED_STR-NOMINATIONREFERENCEDOCITEM sy-vline 
WA_IDEMANDNOMSCHED_STR-NOMINATIONEXTNUMBER sy-vline 
WA_IDEMANDNOMSCHED_STR-MODEOFTRANSPORT sy-vline 
WA_IDEMANDNOMSCHED_STR-DEMANDNOMINATIONSCHEDSRCETYPE sy-vline 
WA_IDEMANDNOMSCHED_STR-CREATEDBYUSER sy-vline 
WA_IDEMANDNOMSCHED_STR-NOMINATIONSCHEDULECREATIONDATE sy-vline 
WA_IDEMANDNOMSCHED_STR-NOMINATIONSIMLNID sy-vline 
WA_IDEMANDNOMSCHED_STR-NOMINATIONSIMLNLINEITM sy-vline 
WA_IDEMANDNOMSCHED_STR-NOMINATIONSIMLNVERSION sy-vline 
WA_IDEMANDNOMSCHED_STR-NOMINATIONDOCISBLOCKED sy-vline      INTO ld_text SEPARATED BY SPACE.

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