ABAP Select data from SAP table FDD1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FDD1 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 FDD1. 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 FDD1 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_FDD1 TYPE STANDARD TABLE OF FDD1,
      WA_FDD1 TYPE FDD1,
      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: <FDD1> TYPE FDD1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FDD1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FDD1
  INTO TABLE IT_FDD1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FDD1
*  INTO TABLE @DATA(IT_FDD12).
*--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_FDD1 INDEX 1 INTO DATA(WA_FDD12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FDD1 ASSIGNING <FDD1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FDD1>-MANDT = 1.
<FDD1>-BUKRS = 1.
<FDD1>-RANL = 1.
<FDD1>-DTRANS = 1.
<FDD1>-TTRANS = 1.

ENDLOOP.

LOOP AT IT_FDD1 INTO WA_FDD1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FDD1-NTRANS, sy-vline,
  WA_FDD1-SSOLHAB, sy-vline,
  WA_FDD1-SFDLEV, sy-vline,
  WA_FDD1-KOART, sy-vline,
  WA_FDD1-FDGRP, sy-vline,
  WA_FDD1-RBANKK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FDD1 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_FDD1 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_FDD1 INTO WA_FDD1.


*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 RANL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FDD1-RANL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDD1-RANL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FDGRP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FDD1-FDGRP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDD1-FDGRP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RBANKK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FDD1-RBANKK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDD1-RBANKK.
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_FDD1_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
RANL TYPE STRING,
DTRANS TYPE STRING,
TTRANS TYPE STRING,
NTRANS TYPE STRING,
SSOLHAB TYPE STRING,
SFDLEV TYPE STRING,
KOART TYPE STRING,
FDGRP TYPE STRING,
RBANKK TYPE STRING,
DDISPO TYPE STRING,
GSBER TYPE STRING,
SCWHR TYPE STRING,
BCWHR TYPE STRING,
BHWHR TYPE STRING,
SVORGKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FDD1_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_FDD1_STR-MANDT sy-vline 
WA_FDD1_STR-BUKRS sy-vline 
WA_FDD1_STR-RANL sy-vline 
WA_FDD1_STR-DTRANS sy-vline 
WA_FDD1_STR-TTRANS sy-vline 
WA_FDD1_STR-NTRANS sy-vline 
WA_FDD1_STR-SSOLHAB sy-vline 
WA_FDD1_STR-SFDLEV sy-vline 
WA_FDD1_STR-KOART sy-vline 
WA_FDD1_STR-FDGRP sy-vline 
WA_FDD1_STR-RBANKK sy-vline 
WA_FDD1_STR-DDISPO sy-vline 
WA_FDD1_STR-GSBER sy-vline 
WA_FDD1_STR-SCWHR sy-vline 
WA_FDD1_STR-BCWHR sy-vline 
WA_FDD1_STR-BHWHR sy-vline 
WA_FDD1_STR-SVORGKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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