ABAP Select data from SAP table IFIAP_DPO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFIAP_DPO
*  INTO TABLE @DATA(IT_IFIAP_DPO2).
*--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_IFIAP_DPO INDEX 1 INTO DATA(WA_IFIAP_DPO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFIAP_DPO>-MANDT = 1.
<IFIAP_DPO>-COMPANYCODE = 1.
<IFIAP_DPO>-SUPPLIER = 1.
<IFIAP_DPO>-YEARMONTH = 1.
<IFIAP_DPO>-SUPPLIERCOUNTRY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFIAP_DPO-SUPPLIERREGION, sy-vline,
  WA_IFIAP_DPO-ACCOUNTINGCLERK, sy-vline,
  WA_IFIAP_DPO-DISPLAYCURRENCY, sy-vline,
  WA_IFIAP_DPO-SUPPLIERBASICAUTHORIZATIONGRP, sy-vline,
  WA_IFIAP_DPO-SUPPLIERFINSAUTHORIZATIONGRP, sy-vline,
  WA_IFIAP_DPO-WEIGHTEDNETAMOUNTINDISPLAYCRCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFIAP_DPO 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_IFIAP_DPO 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_IFIAP_DPO INTO WA_IFIAP_DPO.


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

*Conversion exit PERI6, internal->external for field YEARMONTH
CALL FUNCTION 'CONVERSION_EXIT_PERI6_OUTPUT'
  EXPORTING
    input =                      WA_IFIAP_DPO-YEARMONTH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFIAP_DPO-YEARMONTH.
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_IFIAP_DPO_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
SUPPLIER TYPE STRING,
YEARMONTH TYPE STRING,
SUPPLIERCOUNTRY TYPE STRING,
SUPPLIERREGION TYPE STRING,
ACCOUNTINGCLERK TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
SUPPLIERBASICAUTHORIZATIONGRP TYPE STRING,
SUPPLIERFINSAUTHORIZATIONGRP TYPE STRING,
WEIGHTEDNETAMOUNTINDISPLAYCRCY TYPE STRING,
AMOUNTINDISPLAYCURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFIAP_DPO_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_IFIAP_DPO_STR-MANDT sy-vline 
WA_IFIAP_DPO_STR-COMPANYCODE sy-vline 
WA_IFIAP_DPO_STR-SUPPLIER sy-vline 
WA_IFIAP_DPO_STR-YEARMONTH sy-vline 
WA_IFIAP_DPO_STR-SUPPLIERCOUNTRY sy-vline 
WA_IFIAP_DPO_STR-SUPPLIERREGION sy-vline 
WA_IFIAP_DPO_STR-ACCOUNTINGCLERK sy-vline 
WA_IFIAP_DPO_STR-DISPLAYCURRENCY sy-vline 
WA_IFIAP_DPO_STR-SUPPLIERBASICAUTHORIZATIONGRP sy-vline 
WA_IFIAP_DPO_STR-SUPPLIERFINSAUTHORIZATIONGRP sy-vline 
WA_IFIAP_DPO_STR-WEIGHTEDNETAMOUNTINDISPLAYCRCY sy-vline 
WA_IFIAP_DPO_STR-AMOUNTINDISPLAYCURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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