ABAP Select data from SAP table LOC_DEST into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LOC_DEST
*  INTO TABLE @DATA(IT_LOC_DEST2).
*--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_LOC_DEST INDEX 1 INTO DATA(WA_LOC_DEST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LOC_DEST>-KNOTZ = 1.
<LOC_DEST>-VSTEZ = 1.
<LOC_DEST>-LSTEZ = 1.
<LOC_DEST>-KUNNZ = 1.
<LOC_DEST>-KUNABLZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LOC_DEST-LIFNZ, sy-vline,
  WA_LOC_DEST-WERKZ, sy-vline,
  WA_LOC_DEST-LGORTZ, sy-vline,
  WA_LOC_DEST-LGNUMZ, sy-vline,
  WA_LOC_DEST-TORZ, sy-vline,
  WA_LOC_DEST-ABLAD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LOC_DEST 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_LOC_DEST 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_LOC_DEST INTO WA_LOC_DEST.


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

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

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

*Conversion exit ALPHA, internal->external for field ADRNZD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LOC_DEST-ADRNZD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LOC_DEST-ADRNZD.
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_LOC_DEST_STR, 
KNOTZ TYPE STRING,
VSTEZ TYPE STRING,
LSTEZ TYPE STRING,
KUNNZ TYPE STRING,
KUNABLZ TYPE STRING,
LIFNZ TYPE STRING,
WERKZ TYPE STRING,
LGORTZ TYPE STRING,
LGNUMZ TYPE STRING,
TORZ TYPE STRING,
ABLAD TYPE STRING,
ADRNZ TYPE STRING,
ADRHNDZ TYPE STRING,
ADRKNZZ TYPE STRING,
UPDADZ TYPE STRING,
ADRNZD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LOC_DEST_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_LOC_DEST_STR-KNOTZ sy-vline 
WA_LOC_DEST_STR-VSTEZ sy-vline 
WA_LOC_DEST_STR-LSTEZ sy-vline 
WA_LOC_DEST_STR-KUNNZ sy-vline 
WA_LOC_DEST_STR-KUNABLZ sy-vline 
WA_LOC_DEST_STR-LIFNZ sy-vline 
WA_LOC_DEST_STR-WERKZ sy-vline 
WA_LOC_DEST_STR-LGORTZ sy-vline 
WA_LOC_DEST_STR-LGNUMZ sy-vline 
WA_LOC_DEST_STR-TORZ sy-vline 
WA_LOC_DEST_STR-ABLAD sy-vline 
WA_LOC_DEST_STR-ADRNZ sy-vline 
WA_LOC_DEST_STR-ADRHNDZ sy-vline 
WA_LOC_DEST_STR-ADRKNZZ sy-vline 
WA_LOC_DEST_STR-UPDADZ sy-vline 
WA_LOC_DEST_STR-ADRNZD sy-vline      INTO ld_text SEPARATED BY SPACE.

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