ABAP Select data from SAP table BAPIBUSISM008_ITEM_AI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BAPIBUSISM008_ITEM_AI 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 BAPIBUSISM008_ITEM_AI. 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 BAPIBUSISM008_ITEM_AI 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_BAPIBUSISM008_ITEM_AI TYPE STANDARD TABLE OF BAPIBUSISM008_ITEM_AI,
      WA_BAPIBUSISM008_ITEM_AI TYPE BAPIBUSISM008_ITEM_AI,
      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: <BAPIBUSISM008_ITEM_AI> TYPE BAPIBUSISM008_ITEM_AI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BAPIBUSISM008_ITEM_AI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BAPIBUSISM008_ITEM_AI
  INTO TABLE IT_BAPIBUSISM008_ITEM_AI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPIBUSISM008_ITEM_AI
*  INTO TABLE @DATA(IT_BAPIBUSISM008_ITEM_AI2).
*--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_BAPIBUSISM008_ITEM_AI INDEX 1 INTO DATA(WA_BAPIBUSISM008_ITEM_AI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BAPIBUSISM008_ITEM_AI ASSIGNING <BAPIBUSISM008_ITEM_AI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPIBUSISM008_ITEM_AI>-DOCUMENT_NO = 1.
<BAPIBUSISM008_ITEM_AI>-ITEM_NUMBER = 1.
<BAPIBUSISM008_ITEM_AI>-BUSINESS_CONTENT_COMPONENT = 1.
<BAPIBUSISM008_ITEM_AI>-DATE_CATEGORY = 1.
<BAPIBUSISM008_ITEM_AI>-START_OF_PERIOD = 1.

ENDLOOP.

LOOP AT IT_BAPIBUSISM008_ITEM_AI INTO WA_BAPIBUSISM008_ITEM_AI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPIBUSISM008_ITEM_AI-AD_INSERT_PROC_TYPE, sy-vline,
  WA_BAPIBUSISM008_ITEM_AI-NO_OF_TECHNICAL_SAMPLES, sy-vline,
  WA_BAPIBUSISM008_ITEM_AI-NO_OF_TRIAL_SAMPLES, sy-vline,
  WA_BAPIBUSISM008_ITEM_AI-PLANNING_QUANTITY, sy-vline,
  WA_BAPIBUSISM008_ITEM_AI-SELECTIVE_BOOKING, sy-vline,
  WA_BAPIBUSISM008_ITEM_AI-DELTA_COVERAGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPIBUSISM008_ITEM_AI 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_BAPIBUSISM008_ITEM_AI 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_BAPIBUSISM008_ITEM_AI INTO WA_BAPIBUSISM008_ITEM_AI.


*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 DOCUMENT_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPIBUSISM008_ITEM_AI-DOCUMENT_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIBUSISM008_ITEM_AI-DOCUMENT_NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BUSINESS_CONTENT_COMPONENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPIBUSISM008_ITEM_AI-BUSINESS_CONTENT_COMPONENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIBUSISM008_ITEM_AI-BUSINESS_CONTENT_COMPONENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TERMT, internal->external for field DATE_CATEGORY
CALL FUNCTION 'CONVERSION_EXIT_TERMT_OUTPUT'
  EXPORTING
    input =                      WA_BAPIBUSISM008_ITEM_AI-DATE_CATEGORY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIBUSISM008_ITEM_AI-DATE_CATEGORY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AD_INSERT_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPIBUSISM008_ITEM_AI-AD_INSERT_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIBUSISM008_ITEM_AI-AD_INSERT_NO.
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_BAPIBUSISM008_ITEM_AI_STR, 
DOCUMENT_NO TYPE STRING,
ITEM_NUMBER TYPE STRING,
BUSINESS_CONTENT_COMPONENT TYPE STRING,
DATE_CATEGORY TYPE STRING,
START_OF_PERIOD TYPE STRING,
AD_INSERT_PROC_TYPE TYPE STRING,
NO_OF_TECHNICAL_SAMPLES TYPE STRING,
NO_OF_TRIAL_SAMPLES TYPE STRING,
PLANNING_QUANTITY TYPE STRING,
SELECTIVE_BOOKING TYPE STRING,
DELTA_COVERAGE TYPE STRING,
ADDITIONAL_TECHNICAL_QUANTITY TYPE STRING,
CALCULATION_QUANTITY TYPE STRING,
CALCULATION_QUANTITY_FIXED TYPE STRING,
POSTAL_CHARGES TYPE STRING,
PRODUCT_HIERARCHY TYPE STRING,
KEYWORD TYPE STRING,
AD_INSERT_NO TYPE STRING,
ON_WAITING_LIST TYPE STRING,
TECHNICALLY_INCOMPLETE TYPE STRING,
SAMPLES_CHECKED TYPE STRING,
AD_INSERT_SENT_IN TYPE STRING,
STATUS_CHARACTERISTIC0 TYPE STRING,
STATUS_CHARACTERISTIC1 TYPE STRING,
STATUS_CHARACTERISTIC2 TYPE STRING,
STATUS_CHARACTERISTIC3 TYPE STRING,
STATUS_CHARACTERISTIC4 TYPE STRING,
STATUS_CHARACTERISTIC5 TYPE STRING,
STATUS_CHARACTERISTIC6 TYPE STRING,
STATUS_CHARACTERISTIC7 TYPE STRING,
STATUS_CHARACTERISTIC8 TYPE STRING,
STATUS_CHARACTERISTIC9 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPIBUSISM008_ITEM_AI_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_BAPIBUSISM008_ITEM_AI_STR-DOCUMENT_NO sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-ITEM_NUMBER sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-BUSINESS_CONTENT_COMPONENT sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-DATE_CATEGORY sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-START_OF_PERIOD sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-AD_INSERT_PROC_TYPE sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-NO_OF_TECHNICAL_SAMPLES sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-NO_OF_TRIAL_SAMPLES sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-PLANNING_QUANTITY sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-SELECTIVE_BOOKING sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-DELTA_COVERAGE sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-ADDITIONAL_TECHNICAL_QUANTITY sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-CALCULATION_QUANTITY sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-CALCULATION_QUANTITY_FIXED sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-POSTAL_CHARGES sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-PRODUCT_HIERARCHY sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-KEYWORD sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-AD_INSERT_NO sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-ON_WAITING_LIST sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-TECHNICALLY_INCOMPLETE sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-SAMPLES_CHECKED sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-AD_INSERT_SENT_IN sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-STATUS_CHARACTERISTIC0 sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-STATUS_CHARACTERISTIC1 sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-STATUS_CHARACTERISTIC2 sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-STATUS_CHARACTERISTIC3 sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-STATUS_CHARACTERISTIC4 sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-STATUS_CHARACTERISTIC5 sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-STATUS_CHARACTERISTIC6 sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-STATUS_CHARACTERISTIC7 sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-STATUS_CHARACTERISTIC8 sy-vline 
WA_BAPIBUSISM008_ITEM_AI_STR-STATUS_CHARACTERISTIC9 sy-vline      INTO ld_text SEPARATED BY SPACE.

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