ABAP Select data from SAP table BAPI_OIA_EXGAGRMNT_HDR_OUT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BAPI_OIA_EXGAGRMNT_HDR_OUT 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_OIA_EXGAGRMNT_HDR_OUT. 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_OIA_EXGAGRMNT_HDR_OUT 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_OIA_EXGAGRMNT_HDR_OUT TYPE STANDARD TABLE OF BAPI_OIA_EXGAGRMNT_HDR_OUT,
      WA_BAPI_OIA_EXGAGRMNT_HDR_OUT TYPE BAPI_OIA_EXGAGRMNT_HDR_OUT,
      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_OIA_EXGAGRMNT_HDR_OUT> TYPE BAPI_OIA_EXGAGRMNT_HDR_OUT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI_OIA_EXGAGRMNT_HDR_OUT
*  INTO TABLE @DATA(IT_BAPI_OIA_EXGAGRMNT_HDR_OUT2).
*--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_OIA_EXGAGRMNT_HDR_OUT INDEX 1 INTO DATA(WA_BAPI_OIA_EXGAGRMNT_HDR_OUT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI_OIA_EXGAGRMNT_HDR_OUT>-EXCHANGE_NUMBER = 1.
<BAPI_OIA_EXGAGRMNT_HDR_OUT>-EXCHANGE_TYPE = 1.
<BAPI_OIA_EXGAGRMNT_HDR_OUT>-EXCHANGE_PARTNER = 1.
<BAPI_OIA_EXGAGRMNT_HDR_OUT>-PARTNER_REF_NUMBER = 1.
<BAPI_OIA_EXGAGRMNT_HDR_OUT>-EXCHANGE_STATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI_OIA_EXGAGRMNT_HDR_OUT-EVERGREEN_TYPE, sy-vline,
  WA_BAPI_OIA_EXGAGRMNT_HDR_OUT-START_ON, sy-vline,
  WA_BAPI_OIA_EXGAGRMNT_HDR_OUT-CLOSE_ON, sy-vline,
  WA_BAPI_OIA_EXGAGRMNT_HDR_OUT-REVIEW_ON, sy-vline,
  WA_BAPI_OIA_EXGAGRMNT_HDR_OUT-NOTICE_PERIOD, sy-vline,
  WA_BAPI_OIA_EXGAGRMNT_HDR_OUT-PRODUCT_POSTING_RULE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI_OIA_EXGAGRMNT_HDR_OUT 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_OIA_EXGAGRMNT_HDR_OUT 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_OIA_EXGAGRMNT_HDR_OUT INTO WA_BAPI_OIA_EXGAGRMNT_HDR_OUT.


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

*Conversion exit ALPHA, internal->external for field EXCHANGE_PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_OIA_EXGAGRMNT_HDR_OUT-EXCHANGE_PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_OIA_EXGAGRMNT_HDR_OUT-EXCHANGE_PARTNER.
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_OIA_EXGAGRMNT_HDR_OUT_STR, 
EXCHANGE_NUMBER TYPE STRING,
EXCHANGE_TYPE TYPE STRING,
EXCHANGE_PARTNER TYPE STRING,
PARTNER_REF_NUMBER TYPE STRING,
EXCHANGE_STATUS TYPE STRING,
EVERGREEN_TYPE TYPE STRING,
START_ON TYPE STRING,
CLOSE_ON TYPE STRING,
REVIEW_ON TYPE STRING,
NOTICE_PERIOD TYPE STRING,
PRODUCT_POSTING_RULE TYPE STRING,
FEE_POSTING_RULE TYPE STRING,
TAX_POSTING_RULE TYPE STRING,
IS_NETTING_ACTIVE TYPE STRING,
IS_FEE_REQUIRED TYPE STRING,
IS_VAT_ON_PRODUCT TYPE STRING,
NETTING_CYCLE TYPE STRING,
QTY_SCHEDULE_BRKDWN_PERIOD TYPE STRING,
QTY_SCHEDULE_SPLIT_INDICAT TYPE STRING,
SUB_BASE_PRODUCT_RELEVANCE TYPE STRING,
SUB_BASE_PRODUCT_CHECK TYPE STRING,
BASE_LOCATION TYPE STRING,
CREATED_ON TYPE STRING,
CREATED_BY TYPE STRING,
CHANGED_ON TYPE STRING,
CHANGED_BY TYPE STRING,
OIA_PB_FEE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_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_OIA_EXGAGRMNT_HDR_OUT_STR-EXCHANGE_NUMBER sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-EXCHANGE_TYPE sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-EXCHANGE_PARTNER sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-PARTNER_REF_NUMBER sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-EXCHANGE_STATUS sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-EVERGREEN_TYPE sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-START_ON sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-CLOSE_ON sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-REVIEW_ON sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-NOTICE_PERIOD sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-PRODUCT_POSTING_RULE sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-FEE_POSTING_RULE sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-TAX_POSTING_RULE sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-IS_NETTING_ACTIVE sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-IS_FEE_REQUIRED sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-IS_VAT_ON_PRODUCT sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-NETTING_CYCLE sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-QTY_SCHEDULE_BRKDWN_PERIOD sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-QTY_SCHEDULE_SPLIT_INDICAT sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-SUB_BASE_PRODUCT_RELEVANCE sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-SUB_BASE_PRODUCT_CHECK sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-BASE_LOCATION sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-CREATED_ON sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-CREATED_BY sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-CHANGED_ON sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-CHANGED_BY sy-vline 
WA_BAPI_OIA_EXGAGRMNT_HDR_OUT_STR-OIA_PB_FEE sy-vline      INTO ld_text SEPARATED BY SPACE.

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