ABAP Select data from SAP table AIFMBLIN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AIFMBLIN
*  INTO TABLE @DATA(IT_AIFMBLIN2).
*--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_AIFMBLIN INDEX 1 INTO DATA(WA_AIFMBLIN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AIFMBLIN>-OBJ_POS = 1.
<AIFMBLIN>-OBJ_ID = 1.
<AIFMBLIN>-OBJ_SYS = 1.
<AIFMBLIN>-REF_ORG_UN = 1.
<AIFMBLIN>-VREFBT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AIFMBLIN-VREFBN, sy-vline,
  WA_AIFMBLIN-VRFPOS, sy-vline,
  WA_AIFMBLIN-VRFKNT, sy-vline,
  WA_AIFMBLIN-VRFTYP, sy-vline,
  WA_AIFMBLIN-VRFSYS, sy-vline,
  WA_AIFMBLIN-VRFORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AIFMBLIN 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_AIFMBLIN 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_AIFMBLIN INTO WA_AIFMBLIN.


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

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

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

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

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

*Conversion exit GJAHR, internal->external for field CASH_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_AIFMBLIN-CASH_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AIFMBLIN-CASH_YEAR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit IMKEY, internal->external for field IMKEY
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_AIFMBLIN-IMKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AIFMBLIN-IMKEY.
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_AIFMBLIN_STR, 
OBJ_POS TYPE STRING,
OBJ_ID TYPE STRING,
OBJ_SYS TYPE STRING,
REF_ORG_UN TYPE STRING,
VREFBT TYPE STRING,
VREFBN TYPE STRING,
VRFPOS TYPE STRING,
VRFKNT TYPE STRING,
VRFTYP TYPE STRING,
VRFSYS TYPE STRING,
VRFORG TYPE STRING,
REFBT TYPE STRING,
FMVOR TYPE STRING,
STAT_IND TYPE STRING,
VENDOR_NO TYPE STRING,
CUSTOMER TYPE STRING,
CASH_YEAR TYPE STRING,
TRANSFER_AGENCY TYPE STRING,
TRANSFER_ACCOUNT TYPE STRING,
RCOMP TYPE STRING,
ASSSETTRTYP TYPE STRING,
BUD_PROCESS TYPE STRING,
IMKEY TYPE STRING,
INTRENO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AIFMBLIN_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_AIFMBLIN_STR-OBJ_POS sy-vline 
WA_AIFMBLIN_STR-OBJ_ID sy-vline 
WA_AIFMBLIN_STR-OBJ_SYS sy-vline 
WA_AIFMBLIN_STR-REF_ORG_UN sy-vline 
WA_AIFMBLIN_STR-VREFBT sy-vline 
WA_AIFMBLIN_STR-VREFBN sy-vline 
WA_AIFMBLIN_STR-VRFPOS sy-vline 
WA_AIFMBLIN_STR-VRFKNT sy-vline 
WA_AIFMBLIN_STR-VRFTYP sy-vline 
WA_AIFMBLIN_STR-VRFSYS sy-vline 
WA_AIFMBLIN_STR-VRFORG sy-vline 
WA_AIFMBLIN_STR-REFBT sy-vline 
WA_AIFMBLIN_STR-FMVOR sy-vline 
WA_AIFMBLIN_STR-STAT_IND sy-vline 
WA_AIFMBLIN_STR-VENDOR_NO sy-vline 
WA_AIFMBLIN_STR-CUSTOMER sy-vline 
WA_AIFMBLIN_STR-CASH_YEAR sy-vline 
WA_AIFMBLIN_STR-TRANSFER_AGENCY sy-vline 
WA_AIFMBLIN_STR-TRANSFER_ACCOUNT sy-vline 
WA_AIFMBLIN_STR-RCOMP sy-vline 
WA_AIFMBLIN_STR-ASSSETTRTYP sy-vline 
WA_AIFMBLIN_STR-BUD_PROCESS sy-vline 
WA_AIFMBLIN_STR-IMKEY sy-vline 
WA_AIFMBLIN_STR-INTRENO sy-vline      INTO ld_text SEPARATED BY SPACE.

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