ABAP Select data from SAP table FPM_TEST_DDIC_TYPES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FPM_TEST_DDIC_TYPES
*  INTO TABLE @DATA(IT_FPM_TEST_DDIC_TYPES2).
*--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_FPM_TEST_DDIC_TYPES INDEX 1 INTO DATA(WA_FPM_TEST_DDIC_TYPES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FPM_TEST_DDIC_TYPES>-F_ACCP = 1.
<FPM_TEST_DDIC_TYPES>-F_CHAR = 1.
<FPM_TEST_DDIC_TYPES>-F_CLNT = 1.
<FPM_TEST_DDIC_TYPES>-F_CUKY = 1.
<FPM_TEST_DDIC_TYPES>-F_CURR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FPM_TEST_DDIC_TYPES-F_DATS, sy-vline,
  WA_FPM_TEST_DDIC_TYPES-F_DEC, sy-vline,
  WA_FPM_TEST_DDIC_TYPES-F_FLTP, sy-vline,
  WA_FPM_TEST_DDIC_TYPES-F_INT1, sy-vline,
  WA_FPM_TEST_DDIC_TYPES-F_INT2, sy-vline,
  WA_FPM_TEST_DDIC_TYPES-F_INT4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FPM_TEST_DDIC_TYPES 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_FPM_TEST_DDIC_TYPES 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_FPM_TEST_DDIC_TYPES INTO WA_FPM_TEST_DDIC_TYPES.


*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_FPM_TEST_DDIC_TYPES_STR, 
F_ACCP TYPE STRING,
F_CHAR TYPE STRING,
F_CLNT TYPE STRING,
F_CUKY TYPE STRING,
F_CURR TYPE STRING,
F_DATS TYPE STRING,
F_DEC TYPE STRING,
F_FLTP TYPE STRING,
F_INT1 TYPE STRING,
F_INT2 TYPE STRING,
F_INT4 TYPE STRING,
F_LANG TYPE STRING,
F_LCHR TYPE STRING,
F_LRAW TYPE STRING,
F_NUMC TYPE STRING,
F_PREC TYPE STRING,
F_QUAN TYPE STRING,
F_RAW TYPE STRING,
F_RAWSTRING TYPE STRING,
F_SSTRING TYPE STRING,
F_STRING TYPE STRING,
F_TIMS TYPE STRING,
F_UNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FPM_TEST_DDIC_TYPES_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_FPM_TEST_DDIC_TYPES_STR-F_ACCP sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_CHAR sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_CLNT sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_CUKY sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_CURR sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_DATS sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_DEC sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_FLTP sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_INT1 sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_INT2 sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_INT4 sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_LANG sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_LCHR sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_LRAW sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_NUMC sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_PREC sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_QUAN sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_RAW sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_RAWSTRING sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_SSTRING sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_STRING sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_TIMS sy-vline 
WA_FPM_TEST_DDIC_TYPES_STR-F_UNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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