ABAP Select data from SAP table FVD_IF_IA_POST_RECORDS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FVD_IF_IA_POST_RECORDS
*  INTO TABLE @DATA(IT_FVD_IF_IA_POST_RECORDS2).
*--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_FVD_IF_IA_POST_RECORDS INDEX 1 INTO DATA(WA_FVD_IF_IA_POST_RECORDS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FVD_IF_IA_POST_RECORDS>-SBEWART = 1.
<FVD_IF_IA_POST_RECORDS>-SGTXT = 1.
<FVD_IF_IA_POST_RECORDS>-BCWHR = 1.
<FVD_IF_IA_POST_RECORDS>-SCWHR = 1.
<FVD_IF_IA_POST_RECORDS>-DDISPO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FVD_IF_IA_POST_RECORDS-ATAGE, sy-vline,
  WA_FVD_IF_IA_POST_RECORDS-SZBMETH, sy-vline,
  WA_FVD_IF_IA_POST_RECORDS-BVTYP, sy-vline,
  WA_FVD_IF_IA_POST_RECORDS-ZLSCH, sy-vline,
  WA_FVD_IF_IA_POST_RECORDS-ZAHLS, sy-vline,
  WA_FVD_IF_IA_POST_RECORDS-RPARTNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FVD_IF_IA_POST_RECORDS 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_FVD_IF_IA_POST_RECORDS 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_FVD_IF_IA_POST_RECORDS INTO WA_FVD_IF_IA_POST_RECORDS.


*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 RPARTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FVD_IF_IA_POST_RECORDS-RPARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FVD_IF_IA_POST_RECORDS-RPARTNR.
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_FVD_IF_IA_POST_RECORDS_STR, 
SBEWART TYPE STRING,
SGTXT TYPE STRING,
BCWHR TYPE STRING,
SCWHR TYPE STRING,
DDISPO TYPE STRING,
ATAGE TYPE STRING,
SZBMETH TYPE STRING,
BVTYP TYPE STRING,
ZLSCH TYPE STRING,
ZAHLS TYPE STRING,
RPARTNR TYPE STRING,
SZEGEN TYPE STRING,
SEXCLVON TYPE STRING,
SULTVON TYPE STRING,
SINCLBIS TYPE STRING,
SULTBIS TYPE STRING,
SINCL TYPE STRING,
SVULT TYPE STRING,
REMIT_INFO TYPE STRING,
SZART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FVD_IF_IA_POST_RECORDS_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_FVD_IF_IA_POST_RECORDS_STR-SBEWART sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-SGTXT sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-BCWHR sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-SCWHR sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-DDISPO sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-ATAGE sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-SZBMETH sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-BVTYP sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-ZLSCH sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-ZAHLS sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-RPARTNR sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-SZEGEN sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-SEXCLVON sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-SULTVON sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-SINCLBIS sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-SULTBIS sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-SINCL sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-SVULT sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-REMIT_INFO sy-vline 
WA_FVD_IF_IA_POST_RECORDS_STR-SZART sy-vline      INTO ld_text SEPARATED BY SPACE.

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