ABAP Select data from SAP table FIAA_DPOST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIAA_DPOST
*  INTO TABLE @DATA(IT_FIAA_DPOST2).
*--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_FIAA_DPOST INDEX 1 INTO DATA(WA_FIAA_DPOST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIAA_DPOST>-PERAF = 1.
<FIAA_DPOST>-AFABER = 1.
<FIAA_DPOST>-NAFAZ = 1.
<FIAA_DPOST>-SAFAZ = 1.
<FIAA_DPOST>-AAFAZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIAA_DPOST-MAFAZ, sy-vline,
  WA_FIAA_DPOST-ZINSZ, sy-vline,
  WA_FIAA_DPOST-AUFWZ, sy-vline,
  WA_FIAA_DPOST-AUFNZ, sy-vline,
  WA_FIAA_DPOST-WAERS, sy-vline,
  WA_FIAA_DPOST-XFELD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIAA_DPOST 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_FIAA_DPOST 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_FIAA_DPOST INTO WA_FIAA_DPOST.


*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 AC132, internal->external for field NAFAZ
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_FIAA_DPOST-NAFAZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAA_DPOST-NAFAZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field SAFAZ
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_FIAA_DPOST-SAFAZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAA_DPOST-SAFAZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field AAFAZ
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_FIAA_DPOST-AAFAZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAA_DPOST-AAFAZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field MAFAZ
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_FIAA_DPOST-MAFAZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAA_DPOST-MAFAZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field ZINSZ
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_FIAA_DPOST-ZINSZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAA_DPOST-ZINSZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field AUFWZ
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_FIAA_DPOST-AUFWZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAA_DPOST-AUFWZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field AUFNZ
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_FIAA_DPOST-AUFNZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAA_DPOST-AUFNZ.
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_FIAA_DPOST_STR, 
PERAF TYPE STRING,
AFABER TYPE STRING,
NAFAZ TYPE STRING,
SAFAZ TYPE STRING,
AAFAZ TYPE STRING,
MAFAZ TYPE STRING,
ZINSZ TYPE STRING,
AUFWZ TYPE STRING,
AUFNZ TYPE STRING,
WAERS TYPE STRING,
XFELD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIAA_DPOST_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_FIAA_DPOST_STR-PERAF sy-vline 
WA_FIAA_DPOST_STR-AFABER sy-vline 
WA_FIAA_DPOST_STR-NAFAZ sy-vline 
WA_FIAA_DPOST_STR-SAFAZ sy-vline 
WA_FIAA_DPOST_STR-AAFAZ sy-vline 
WA_FIAA_DPOST_STR-MAFAZ sy-vline 
WA_FIAA_DPOST_STR-ZINSZ sy-vline 
WA_FIAA_DPOST_STR-AUFWZ sy-vline 
WA_FIAA_DPOST_STR-AUFNZ sy-vline 
WA_FIAA_DPOST_STR-WAERS sy-vline 
WA_FIAA_DPOST_STR-XFELD sy-vline      INTO ld_text SEPARATED BY SPACE.

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