ABAP Select data from SAP table FDT_S_TEST_SFW_APPEND1_ON into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FDT_S_TEST_SFW_APPEND1_ON 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 FDT_S_TEST_SFW_APPEND1_ON. 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 FDT_S_TEST_SFW_APPEND1_ON 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_FDT_S_TEST_SFW_APPEND1_ON TYPE STANDARD TABLE OF FDT_S_TEST_SFW_APPEND1_ON,
      WA_FDT_S_TEST_SFW_APPEND1_ON TYPE FDT_S_TEST_SFW_APPEND1_ON,
      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: <FDT_S_TEST_SFW_APPEND1_ON> TYPE FDT_S_TEST_SFW_APPEND1_ON.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FDT_S_TEST_SFW_APPEND1_ON.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FDT_S_TEST_SFW_APPEND1_ON
  INTO TABLE IT_FDT_S_TEST_SFW_APPEND1_ON.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FDT_S_TEST_SFW_APPEND1_ON
*  INTO TABLE @DATA(IT_FDT_S_TEST_SFW_APPEND1_ON2).
*--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_FDT_S_TEST_SFW_APPEND1_ON INDEX 1 INTO DATA(WA_FDT_S_TEST_SFW_APPEND1_ON2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FDT_S_TEST_SFW_APPEND1_ON ASSIGNING <FDT_S_TEST_SFW_APPEND1_ON>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FDT_S_TEST_SFW_APPEND1_ON>-APPEND1_ON_KEY = 1.
<FDT_S_TEST_SFW_APPEND1_ON>-APPEND1_ON_KEY = 1.
<FDT_S_TEST_SFW_APPEND1_ON>-APPEND1_ON_FIELD = 1.
<FDT_S_TEST_SFW_APPEND1_ON>-APPEND1_ON_FIELD = 1.
<FDT_S_TEST_SFW_APPEND1_ON>-APPEND1_ON_E_ON = 1.

ENDLOOP.

LOOP AT IT_FDT_S_TEST_SFW_APPEND1_ON INTO WA_FDT_S_TEST_SFW_APPEND1_ON.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FDT_S_TEST_SFW_APPEND1_ON-APPEND1_ON_E_ON, sy-vline,
  WA_FDT_S_TEST_SFW_APPEND1_ON-APPEND1_ON_S_ON, sy-vline,
  WA_FDT_S_TEST_SFW_APPEND1_ON-APPEND1_ON_S_ON, sy-vline,
  WA_FDT_S_TEST_SFW_APPEND1_ON-ID, sy-vline,
  WA_FDT_S_TEST_SFW_APPEND1_ON-ID, sy-vline,
  WA_FDT_S_TEST_SFW_APPEND1_ON-AMOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FDT_S_TEST_SFW_APPEND1_ON 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_FDT_S_TEST_SFW_APPEND1_ON 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_FDT_S_TEST_SFW_APPEND1_ON INTO WA_FDT_S_TEST_SFW_APPEND1_ON.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FDT_S_TEST_SFW_APPEND1_ON_STR, 
APPEND1_ON_KEY TYPE STRING,
APPEND1_ON_KEY TYPE STRING,
APPEND1_ON_FIELD TYPE STRING,
APPEND1_ON_FIELD TYPE STRING,
APPEND1_ON_E_ON TYPE STRING,
APPEND1_ON_E_ON TYPE STRING,
APPEND1_ON_S_ON TYPE STRING,
APPEND1_ON_S_ON TYPE STRING,
ID TYPE STRING,
ID TYPE STRING,
AMOUNT TYPE STRING,
AMOUNT TYPE STRING,
NUMBER TYPE STRING,
NUMBER TYPE STRING,
CURRENCY TYPE STRING,
CURRENCY TYPE STRING,
QUANTITY TYPE STRING,
QUANTITY TYPE STRING,
NUMBER TYPE STRING,
NUMBER TYPE STRING,
UNIT TYPE STRING,
UNIT TYPE STRING,
STRUCTURE_TYPE TYPE STRING,
STRUCTURE_TYPE TYPE STRING,
STRUCTURE_TYPE TYPE STRING,
STRUCTURE_TYPE TYPE STRING,
APPEND1_ON_T_ON TYPE STRING,
APPEND1_ON_T_ON TYPE STRING,
APPEND1_ON_INC_EL_TYPE_A1 TYPE STRING,
APPEND1_ON_INC_EL_TYPE_A1 TYPE STRING,
APPEND2_ON_EL_TYPE_A1 TYPE STRING,
APPEND2_ON_EL_TYPE_A1 TYPE STRING,
APPEND1_ON_INC_EL_TYPE TYPE STRING,
APPEND3_OFF_EL_TYPE_A1 TYPE STRING,
APPEND2_ON_EL_TYPE TYPE STRING,
APPEND1_ON_INC_EL_TYPE TYPE STRING,
APPEND2_ON_EL_TYPE TYPE STRING,
APPEND3_OFF_EL_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FDT_S_TEST_SFW_APPEND1_ON_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_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND1_ON_KEY sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND1_ON_KEY sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND1_ON_FIELD sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND1_ON_FIELD sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND1_ON_E_ON sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND1_ON_E_ON sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND1_ON_S_ON sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND1_ON_S_ON sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-ID sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-ID sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-AMOUNT sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-AMOUNT sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-NUMBER sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-NUMBER sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-CURRENCY sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-CURRENCY sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-QUANTITY sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-QUANTITY sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-NUMBER sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-NUMBER sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-UNIT sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-UNIT sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-STRUCTURE_TYPE sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-STRUCTURE_TYPE sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-STRUCTURE_TYPE sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-STRUCTURE_TYPE sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND1_ON_T_ON sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND1_ON_T_ON sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND1_ON_INC_EL_TYPE_A1 sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND1_ON_INC_EL_TYPE_A1 sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND2_ON_EL_TYPE_A1 sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND2_ON_EL_TYPE_A1 sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND1_ON_INC_EL_TYPE sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND3_OFF_EL_TYPE_A1 sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND2_ON_EL_TYPE sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND1_ON_INC_EL_TYPE sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND2_ON_EL_TYPE sy-vline 
WA_FDT_S_TEST_SFW_APPEND1_ON_STR-APPEND3_OFF_EL_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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