ABAP Select data from SAP table LTR2_DSCR_ADR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP LTR2_DSCR_ADR 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 LTR2_DSCR_ADR. 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 LTR2_DSCR_ADR 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_LTR2_DSCR_ADR TYPE STANDARD TABLE OF LTR2_DSCR_ADR,
      WA_LTR2_DSCR_ADR TYPE LTR2_DSCR_ADR,
      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: <LTR2_DSCR_ADR> TYPE LTR2_DSCR_ADR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_LTR2_DSCR_ADR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM LTR2_DSCR_ADR
  INTO TABLE IT_LTR2_DSCR_ADR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LTR2_DSCR_ADR
*  INTO TABLE @DATA(IT_LTR2_DSCR_ADR2).
*--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_LTR2_DSCR_ADR INDEX 1 INTO DATA(WA_LTR2_DSCR_ADR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_LTR2_DSCR_ADR ASSIGNING <LTR2_DSCR_ADR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LTR2_DSCR_ADR>-WS_GUID = 1.
<LTR2_DSCR_ADR>-LINE = 1.
<LTR2_DSCR_ADR>-ADDRNUMBER = 1.
<LTR2_DSCR_ADR>-LAND1 = 1.
<LTR2_DSCR_ADR>-TITLE = 1.

ENDLOOP.

LOOP AT IT_LTR2_DSCR_ADR INTO WA_LTR2_DSCR_ADR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LTR2_DSCR_ADR-NAME1, sy-vline,
  WA_LTR2_DSCR_ADR-NAME2, sy-vline,
  WA_LTR2_DSCR_ADR-NAME3, sy-vline,
  WA_LTR2_DSCR_ADR-NAME4, sy-vline,
  WA_LTR2_DSCR_ADR-NAME_TEXT, sy-vline,
  WA_LTR2_DSCR_ADR-NAME_CO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LTR2_DSCR_ADR 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_LTR2_DSCR_ADR 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_LTR2_DSCR_ADR INTO WA_LTR2_DSCR_ADR.


*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_LTR2_DSCR_ADR_STR, 
WS_GUID TYPE STRING,
LINE TYPE STRING,
ADDRNUMBER TYPE STRING,
LAND1 TYPE STRING,
TITLE TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
NAME_TEXT TYPE STRING,
NAME_CO TYPE STRING,
CITY1 TYPE STRING,
CITY2 TYPE STRING,
CITY_CODE TYPE STRING,
CITYP_CODE TYPE STRING,
HOME_CITY TYPE STRING,
CITYH_CODE TYPE STRING,
POST_CODE1 TYPE STRING,
POST_CODE2 TYPE STRING,
POST_CODE3 TYPE STRING,
PCODE1_EXT TYPE STRING,
PCODE2_EXT TYPE STRING,
PCODE3_EXT TYPE STRING,
PO_BOX TYPE STRING,
PO_BOX_NUM TYPE STRING,
PO_BOX_LOC TYPE STRING,
CITY_CODE2 TYPE STRING,
PO_BOX_REG TYPE STRING,
PO_BOX_CTY TYPE STRING,
POSTALAREA TYPE STRING,
TRANSPZONE TYPE STRING,
STREET TYPE STRING,
DONT_USE_S TYPE STRING,
STREETCODE TYPE STRING,
STREETABBR TYPE STRING,
HOUSE_NUM1 TYPE STRING,
HOUSE_NUM2 TYPE STRING,
HOUSE_NUM3 TYPE STRING,
STR_SUPPL1 TYPE STRING,
STR_SUPPL2 TYPE STRING,
STR_SUPPL3 TYPE STRING,
LOCATION TYPE STRING,
BUILDING TYPE STRING,
FLOOR TYPE STRING,
ROOMNUMBER TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
SORT1 TYPE STRING,
SORT2 TYPE STRING,
TEL_NUMBER TYPE STRING,
TEL_EXTENS TYPE STRING,
FAX_NUMBER TYPE STRING,
FAX_EXTENS TYPE STRING,
MC_NAME1 TYPE STRING,
MC_CITY1 TYPE STRING,
MC_STREET TYPE STRING,
TELNR_LONG TYPE STRING,
TELNR_CALL TYPE STRING,
FAXNR_LONG TYPE STRING,
FAXNR_CALL TYPE STRING,
SMTP_ADDR TYPE STRING,
SMTP_SRCH TYPE STRING,
TAXJURCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LTR2_DSCR_ADR_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_LTR2_DSCR_ADR_STR-WS_GUID sy-vline 
WA_LTR2_DSCR_ADR_STR-LINE sy-vline 
WA_LTR2_DSCR_ADR_STR-ADDRNUMBER sy-vline 
WA_LTR2_DSCR_ADR_STR-LAND1 sy-vline 
WA_LTR2_DSCR_ADR_STR-TITLE sy-vline 
WA_LTR2_DSCR_ADR_STR-NAME1 sy-vline 
WA_LTR2_DSCR_ADR_STR-NAME2 sy-vline 
WA_LTR2_DSCR_ADR_STR-NAME3 sy-vline 
WA_LTR2_DSCR_ADR_STR-NAME4 sy-vline 
WA_LTR2_DSCR_ADR_STR-NAME_TEXT sy-vline 
WA_LTR2_DSCR_ADR_STR-NAME_CO sy-vline 
WA_LTR2_DSCR_ADR_STR-CITY1 sy-vline 
WA_LTR2_DSCR_ADR_STR-CITY2 sy-vline 
WA_LTR2_DSCR_ADR_STR-CITY_CODE sy-vline 
WA_LTR2_DSCR_ADR_STR-CITYP_CODE sy-vline 
WA_LTR2_DSCR_ADR_STR-HOME_CITY sy-vline 
WA_LTR2_DSCR_ADR_STR-CITYH_CODE sy-vline 
WA_LTR2_DSCR_ADR_STR-POST_CODE1 sy-vline 
WA_LTR2_DSCR_ADR_STR-POST_CODE2 sy-vline 
WA_LTR2_DSCR_ADR_STR-POST_CODE3 sy-vline 
WA_LTR2_DSCR_ADR_STR-PCODE1_EXT sy-vline 
WA_LTR2_DSCR_ADR_STR-PCODE2_EXT sy-vline 
WA_LTR2_DSCR_ADR_STR-PCODE3_EXT sy-vline 
WA_LTR2_DSCR_ADR_STR-PO_BOX sy-vline 
WA_LTR2_DSCR_ADR_STR-PO_BOX_NUM sy-vline 
WA_LTR2_DSCR_ADR_STR-PO_BOX_LOC sy-vline 
WA_LTR2_DSCR_ADR_STR-CITY_CODE2 sy-vline 
WA_LTR2_DSCR_ADR_STR-PO_BOX_REG sy-vline 
WA_LTR2_DSCR_ADR_STR-PO_BOX_CTY sy-vline 
WA_LTR2_DSCR_ADR_STR-POSTALAREA sy-vline 
WA_LTR2_DSCR_ADR_STR-TRANSPZONE sy-vline 
WA_LTR2_DSCR_ADR_STR-STREET sy-vline 
WA_LTR2_DSCR_ADR_STR-DONT_USE_S sy-vline 
WA_LTR2_DSCR_ADR_STR-STREETCODE sy-vline 
WA_LTR2_DSCR_ADR_STR-STREETABBR sy-vline 
WA_LTR2_DSCR_ADR_STR-HOUSE_NUM1 sy-vline 
WA_LTR2_DSCR_ADR_STR-HOUSE_NUM2 sy-vline 
WA_LTR2_DSCR_ADR_STR-HOUSE_NUM3 sy-vline 
WA_LTR2_DSCR_ADR_STR-STR_SUPPL1 sy-vline 
WA_LTR2_DSCR_ADR_STR-STR_SUPPL2 sy-vline 
WA_LTR2_DSCR_ADR_STR-STR_SUPPL3 sy-vline 
WA_LTR2_DSCR_ADR_STR-LOCATION sy-vline 
WA_LTR2_DSCR_ADR_STR-BUILDING sy-vline 
WA_LTR2_DSCR_ADR_STR-FLOOR sy-vline 
WA_LTR2_DSCR_ADR_STR-ROOMNUMBER sy-vline 
WA_LTR2_DSCR_ADR_STR-COUNTRY sy-vline 
WA_LTR2_DSCR_ADR_STR-REGION sy-vline 
WA_LTR2_DSCR_ADR_STR-SORT1 sy-vline 
WA_LTR2_DSCR_ADR_STR-SORT2 sy-vline 
WA_LTR2_DSCR_ADR_STR-TEL_NUMBER sy-vline 
WA_LTR2_DSCR_ADR_STR-TEL_EXTENS sy-vline 
WA_LTR2_DSCR_ADR_STR-FAX_NUMBER sy-vline 
WA_LTR2_DSCR_ADR_STR-FAX_EXTENS sy-vline 
WA_LTR2_DSCR_ADR_STR-MC_NAME1 sy-vline 
WA_LTR2_DSCR_ADR_STR-MC_CITY1 sy-vline 
WA_LTR2_DSCR_ADR_STR-MC_STREET sy-vline 
WA_LTR2_DSCR_ADR_STR-TELNR_LONG sy-vline 
WA_LTR2_DSCR_ADR_STR-TELNR_CALL sy-vline 
WA_LTR2_DSCR_ADR_STR-FAXNR_LONG sy-vline 
WA_LTR2_DSCR_ADR_STR-FAXNR_CALL sy-vline 
WA_LTR2_DSCR_ADR_STR-SMTP_ADDR sy-vline 
WA_LTR2_DSCR_ADR_STR-SMTP_SRCH sy-vline 
WA_LTR2_DSCR_ADR_STR-TAXJURCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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