ABAP Select data from SAP table T030D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T030D 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 T030D. 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 T030D 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_T030D TYPE STANDARD TABLE OF T030D,
      WA_T030D TYPE T030D,
      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: <T030D> TYPE T030D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T030D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T030D
  INTO TABLE IT_T030D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T030D
*  INTO TABLE @DATA(IT_T030D2).
*--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_T030D INDEX 1 INTO DATA(WA_T030D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T030D ASSIGNING <T030D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T030D>-MANDT = 1.
<T030D>-KTOPL = 1.
<T030D>-HKONT = 1.
<T030D>-WAERS = 1.
<T030D>-LKORR = 1.

ENDLOOP.

LOOP AT IT_T030D INTO WA_T030D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T030D-KKORR, sy-vline,
  WA_T030D-LSREA, sy-vline,
  WA_T030D-LHREA, sy-vline,
  WA_T030D-LSTRA, sy-vline,
  WA_T030D-LHTRA, sy-vline,
  WA_T030D-KSTRA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T030D 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_T030D 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_T030D INTO WA_T030D.


*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 HKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-HKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-HKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LKORR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-LKORR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-LKORR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KKORR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-KKORR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-KKORR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LSREA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-LSREA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-LSREA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LHREA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-LHREA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-LHREA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LSTRA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-LSTRA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-LSTRA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LHTRA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-LHTRA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-LHTRA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTRA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-KSTRA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-KSTRA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KHTRA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-KHTRA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-KHTRA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LSBEW
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-LSBEW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-LSBEW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LHBEW
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-LHBEW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-LHBEW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSBEW
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-KSBEW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-KSBEW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KHBEW
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-KHBEW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-KHBEW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LSTRV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-LSTRV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-LSTRV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LHTRV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-LHTRV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-LHTRV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KSTRV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-KSTRV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-KSTRV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KHTRV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T030D-KHTRV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T030D-KHTRV.
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_T030D_STR, 
MANDT TYPE STRING,
KTOPL TYPE STRING,
HKONT TYPE STRING,
WAERS TYPE STRING,
LKORR TYPE STRING,
KKORR TYPE STRING,
LSREA TYPE STRING,
LHREA TYPE STRING,
LSTRA TYPE STRING,
LHTRA TYPE STRING,
KSTRA TYPE STRING,
KHTRA TYPE STRING,
LSBEW TYPE STRING,
LHBEW TYPE STRING,
KSBEW TYPE STRING,
KHBEW TYPE STRING,
LSTRV TYPE STRING,
LHTRV TYPE STRING,
KSTRV TYPE STRING,
KHTRV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T030D_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_T030D_STR-MANDT sy-vline 
WA_T030D_STR-KTOPL sy-vline 
WA_T030D_STR-HKONT sy-vline 
WA_T030D_STR-WAERS sy-vline 
WA_T030D_STR-LKORR sy-vline 
WA_T030D_STR-KKORR sy-vline 
WA_T030D_STR-LSREA sy-vline 
WA_T030D_STR-LHREA sy-vline 
WA_T030D_STR-LSTRA sy-vline 
WA_T030D_STR-LHTRA sy-vline 
WA_T030D_STR-KSTRA sy-vline 
WA_T030D_STR-KHTRA sy-vline 
WA_T030D_STR-LSBEW sy-vline 
WA_T030D_STR-LHBEW sy-vline 
WA_T030D_STR-KSBEW sy-vline 
WA_T030D_STR-KHBEW sy-vline 
WA_T030D_STR-LSTRV sy-vline 
WA_T030D_STR-LHTRV sy-vline 
WA_T030D_STR-KSTRV sy-vline 
WA_T030D_STR-KHTRV sy-vline      INTO ld_text SEPARATED BY SPACE.

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