ABAP Select data from SAP table BAPI_NETWORK_COMP_CHANGE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI_NETWORK_COMP_CHANGE
*  INTO TABLE @DATA(IT_BAPI_NETWORK_COMP_CHANGE2).
*--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_BAPI_NETWORK_COMP_CHANGE INDEX 1 INTO DATA(WA_BAPI_NETWORK_COMP_CHANGE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI_NETWORK_COMP_CHANGE>-COMPONENT = 1.
<BAPI_NETWORK_COMP_CHANGE>-ACTIVITY = 1.
<BAPI_NETWORK_COMP_CHANGE>-ITEM_NUMBER = 1.
<BAPI_NETWORK_COMP_CHANGE>-ENTRY_QUANTITY = 1.
<BAPI_NETWORK_COMP_CHANGE>-BASE_UOM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI_NETWORK_COMP_CHANGE-BASE_UOM_ISO, sy-vline,
  WA_BAPI_NETWORK_COMP_CHANGE-ITEM_TEXT, sy-vline,
  WA_BAPI_NETWORK_COMP_CHANGE-MRP_RELEVANT, sy-vline,
  WA_BAPI_NETWORK_COMP_CHANGE-REQ_DATE, sy-vline,
  WA_BAPI_NETWORK_COMP_CHANGE-MANUAL_REQUIREMENTS_DATE, sy-vline,
  WA_BAPI_NETWORK_COMP_CHANGE-LEAD_TIME_OFFSET_OPR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI_NETWORK_COMP_CHANGE 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_BAPI_NETWORK_COMP_CHANGE 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_BAPI_NETWORK_COMP_CHANGE INTO WA_BAPI_NETWORK_COMP_CHANGE.


*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 ACTIVITY
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_NETWORK_COMP_CHANGE-ACTIVITY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_NETWORK_COMP_CHANGE-ACTIVITY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field ITEM_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_NETWORK_COMP_CHANGE-ITEM_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_NETWORK_COMP_CHANGE-ITEM_NUMBER.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field ADDR_NO2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_NETWORK_COMP_CHANGE-ADDR_NO2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_NETWORK_COMP_CHANGE-ADDR_NO2.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ABPSP, internal->external for field WBS_ELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_NETWORK_COMP_CHANGE-WBS_ELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_NETWORK_COMP_CHANGE-WBS_ELEMENT.
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_BAPI_NETWORK_COMP_CHANGE_STR, 
COMPONENT TYPE STRING,
ACTIVITY TYPE STRING,
ITEM_NUMBER TYPE STRING,
ENTRY_QUANTITY TYPE STRING,
BASE_UOM TYPE STRING,
BASE_UOM_ISO TYPE STRING,
ITEM_TEXT TYPE STRING,
MRP_RELEVANT TYPE STRING,
REQ_DATE TYPE STRING,
MANUAL_REQUIREMENTS_DATE TYPE STRING,
LEAD_TIME_OFFSET_OPR TYPE STRING,
LEAD_TIME_OFFSET_OPR_UNIT TYPE STRING,
LEAD_TIME_OFFSET_OPR_UNIT_ISO TYPE STRING,
MRP_DISTRIBUTION_KEY TYPE STRING,
COST_RELEVANT TYPE STRING,
STGE_LOC TYPE STRING,
BATCH TYPE STRING,
BOMEXPL_NO TYPE STRING,
DELIVERY_DAYS TYPE STRING,
PUR_GROUP TYPE STRING,
PURCH_ORG TYPE STRING,
INFO_REC TYPE STRING,
PRICE TYPE STRING,
PRICE_UNIT TYPE STRING,
CURRENCY TYPE STRING,
CURRENCY_ISO TYPE STRING,
PUR_INFO_RECORD_DATA_FIXED TYPE STRING,
AGREEMENT TYPE STRING,
AGMT_ITEM TYPE STRING,
GL_ACCOUNT TYPE STRING,
VENDOR_NO TYPE STRING,
GR_PR_TIME TYPE STRING,
MATL_GROUP TYPE STRING,
PREQ_NAME TYPE STRING,
GR_RCPT TYPE STRING,
TRACKINGNO TYPE STRING,
UNLOAD_PT TYPE STRING,
SORT_STRING TYPE STRING,
BACKFLUSH TYPE STRING,
WITHDRAWN TYPE STRING,
BULK_MAT TYPE STRING,
VSI_SIZE1 TYPE STRING,
VSI_SIZE2 TYPE STRING,
VSI_SIZE3 TYPE STRING,
VSI_SIZE_UNIT TYPE STRING,
VSI_SIZE_UNIT_ISO TYPE STRING,
VSI_QTY TYPE STRING,
VAR_SIZE_COMP_MEASURE_UNIT TYPE STRING,
VAR_SIZE_COMP_MEASURE_UNIT_ISO TYPE STRING,
VSI_FORMULA TYPE STRING,
VSI_NO TYPE STRING,
ORIGINAL_QUANTITY TYPE STRING,
ADDR_NO TYPE STRING,
ADDR_NO2 TYPE STRING,
SUPP_VENDOR TYPE STRING,
CUSTOMER TYPE STRING,
WBS_ELEMENT TYPE STRING,
S_ORD_ITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI_NETWORK_COMP_CHANGE_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_BAPI_NETWORK_COMP_CHANGE_STR-COMPONENT sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-ACTIVITY sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-ITEM_NUMBER sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-ENTRY_QUANTITY sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-BASE_UOM sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-BASE_UOM_ISO sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-ITEM_TEXT sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-MRP_RELEVANT sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-REQ_DATE sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-MANUAL_REQUIREMENTS_DATE sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-LEAD_TIME_OFFSET_OPR sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-LEAD_TIME_OFFSET_OPR_UNIT sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-LEAD_TIME_OFFSET_OPR_UNIT_ISO sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-MRP_DISTRIBUTION_KEY sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-COST_RELEVANT sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-STGE_LOC sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-BATCH sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-BOMEXPL_NO sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-DELIVERY_DAYS sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-PUR_GROUP sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-PURCH_ORG sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-INFO_REC sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-PRICE sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-PRICE_UNIT sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-CURRENCY sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-CURRENCY_ISO sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-PUR_INFO_RECORD_DATA_FIXED sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-AGREEMENT sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-AGMT_ITEM sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-GL_ACCOUNT sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-VENDOR_NO sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-GR_PR_TIME sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-MATL_GROUP sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-PREQ_NAME sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-GR_RCPT sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-TRACKINGNO sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-UNLOAD_PT sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-SORT_STRING sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-BACKFLUSH sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-WITHDRAWN sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-BULK_MAT sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-VSI_SIZE1 sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-VSI_SIZE2 sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-VSI_SIZE3 sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-VSI_SIZE_UNIT sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-VSI_SIZE_UNIT_ISO sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-VSI_QTY sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-VAR_SIZE_COMP_MEASURE_UNIT sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-VAR_SIZE_COMP_MEASURE_UNIT_ISO sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-VSI_FORMULA sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-VSI_NO sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-ORIGINAL_QUANTITY sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-ADDR_NO sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-ADDR_NO2 sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-SUPP_VENDOR sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-CUSTOMER sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-WBS_ELEMENT sy-vline 
WA_BAPI_NETWORK_COMP_CHANGE_STR-S_ORD_ITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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