ABAP Select data from SAP table PUR_IOT_NOTIF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PUR_IOT_NOTIF
*  INTO TABLE @DATA(IT_PUR_IOT_NOTIF2).
*--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_PUR_IOT_NOTIF INDEX 1 INTO DATA(WA_PUR_IOT_NOTIF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PUR_IOT_NOTIF>-MANDT = 1.
<PUR_IOT_NOTIF>-IOT_EVENT_UUID = 1.
<PUR_IOT_NOTIF>-IOT_EVENT_TYPE = 1.
<PUR_IOT_NOTIF>-IOT_EVENT = 1.
<PUR_IOT_NOTIF>-SALESORDER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PUR_IOT_NOTIF-SALESORDERITEM, sy-vline,
  WA_PUR_IOT_NOTIF-SALESORDERITEMUNIQUEID, sy-vline,
  WA_PUR_IOT_NOTIF-PURCHASEORDER, sy-vline,
  WA_PUR_IOT_NOTIF-PURCHASEORDERITEM, sy-vline,
  WA_PUR_IOT_NOTIF-PURCHASEORDERITEMUNIQUEID, sy-vline,
  WA_PUR_IOT_NOTIF-CUSTOMERID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PUR_IOT_NOTIF 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_PUR_IOT_NOTIF 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_PUR_IOT_NOTIF INTO WA_PUR_IOT_NOTIF.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field HU_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PUR_IOT_NOTIF-HU_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PUR_IOT_NOTIF-HU_ID.
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_PUR_IOT_NOTIF_STR, 
MANDT TYPE STRING,
IOT_EVENT_UUID TYPE STRING,
IOT_EVENT_TYPE TYPE STRING,
IOT_EVENT TYPE STRING,
SALESORDER TYPE STRING,
SALESORDERITEM TYPE STRING,
SALESORDERITEMUNIQUEID TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
PURCHASEORDERITEMUNIQUEID TYPE STRING,
CUSTOMERID TYPE STRING,
CUSTOMER_NAME TYPE STRING,
MATERIAL TYPE STRING,
MATERIAL_DESCRIPTION TYPE STRING,
DELIVERY TYPE STRING,
DELIVERY_ITEM TYPE STRING,
HU_ID TYPE STRING,
ERDAT TYPE STRING,
ERZET TYPE STRING,
SENSORUNIT TYPE STRING,
ACTUALVALUE TYPE STRING,
THRESHOLDVALUE TYPE STRING,
WAREHOUSE TYPE STRING,
STORAGE_LOCATION TYPE STRING,
LONGITUDE TYPE STRING,
LATITUDE TYPE STRING,
PLANT TYPE STRING,
HU_HANDLE TYPE STRING,
RESPONSIBLE TYPE STRING,
THRESHOLD_DESC TYPE STRING,
SITUATION_CATEGORY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PUR_IOT_NOTIF_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_PUR_IOT_NOTIF_STR-MANDT sy-vline 
WA_PUR_IOT_NOTIF_STR-IOT_EVENT_UUID sy-vline 
WA_PUR_IOT_NOTIF_STR-IOT_EVENT_TYPE sy-vline 
WA_PUR_IOT_NOTIF_STR-IOT_EVENT sy-vline 
WA_PUR_IOT_NOTIF_STR-SALESORDER sy-vline 
WA_PUR_IOT_NOTIF_STR-SALESORDERITEM sy-vline 
WA_PUR_IOT_NOTIF_STR-SALESORDERITEMUNIQUEID sy-vline 
WA_PUR_IOT_NOTIF_STR-PURCHASEORDER sy-vline 
WA_PUR_IOT_NOTIF_STR-PURCHASEORDERITEM sy-vline 
WA_PUR_IOT_NOTIF_STR-PURCHASEORDERITEMUNIQUEID sy-vline 
WA_PUR_IOT_NOTIF_STR-CUSTOMERID sy-vline 
WA_PUR_IOT_NOTIF_STR-CUSTOMER_NAME sy-vline 
WA_PUR_IOT_NOTIF_STR-MATERIAL sy-vline 
WA_PUR_IOT_NOTIF_STR-MATERIAL_DESCRIPTION sy-vline 
WA_PUR_IOT_NOTIF_STR-DELIVERY sy-vline 
WA_PUR_IOT_NOTIF_STR-DELIVERY_ITEM sy-vline 
WA_PUR_IOT_NOTIF_STR-HU_ID sy-vline 
WA_PUR_IOT_NOTIF_STR-ERDAT sy-vline 
WA_PUR_IOT_NOTIF_STR-ERZET sy-vline 
WA_PUR_IOT_NOTIF_STR-SENSORUNIT sy-vline 
WA_PUR_IOT_NOTIF_STR-ACTUALVALUE sy-vline 
WA_PUR_IOT_NOTIF_STR-THRESHOLDVALUE sy-vline 
WA_PUR_IOT_NOTIF_STR-WAREHOUSE sy-vline 
WA_PUR_IOT_NOTIF_STR-STORAGE_LOCATION sy-vline 
WA_PUR_IOT_NOTIF_STR-LONGITUDE sy-vline 
WA_PUR_IOT_NOTIF_STR-LATITUDE sy-vline 
WA_PUR_IOT_NOTIF_STR-PLANT sy-vline 
WA_PUR_IOT_NOTIF_STR-HU_HANDLE sy-vline 
WA_PUR_IOT_NOTIF_STR-RESPONSIBLE sy-vline 
WA_PUR_IOT_NOTIF_STR-THRESHOLD_DESC sy-vline 
WA_PUR_IOT_NOTIF_STR-SITUATION_CATEGORY sy-vline      INTO ld_text SEPARATED BY SPACE.

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