ABAP Select data from SAP table LOCATION_I into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LOCATION_I
*  INTO TABLE @DATA(IT_LOCATION_I2).
*--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_LOCATION_I INDEX 1 INTO DATA(WA_LOCATION_I2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LOCATION_I>-KNOTE = 1.
<LOCATION_I>-VSTEL = 1.
<LOCATION_I>-LSTEL = 1.
<LOCATION_I>-KUNNR = 1.
<LOCATION_I>-KUNABL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LOCATION_I-LIFNR, sy-vline,
  WA_LOCATION_I-WERKS, sy-vline,
  WA_LOCATION_I-LGORT, sy-vline,
  WA_LOCATION_I-LGNUM, sy-vline,
  WA_LOCATION_I-TOR, sy-vline,
  WA_LOCATION_I-BELAD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LOCATION_I 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_LOCATION_I 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_LOCATION_I INTO WA_LOCATION_I.


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

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

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

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

*Conversion exit ALPHA, internal->external for field CITYP_CODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LOCATION_I-CITYP_CODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LOCATION_I-CITYP_CODE.
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_LOCATION_I_STR, 
KNOTE TYPE STRING,
VSTEL TYPE STRING,
LSTEL TYPE STRING,
KUNNR TYPE STRING,
KUNABL TYPE STRING,
LIFNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
LGNUM TYPE STRING,
TOR TYPE STRING,
BELAD TYPE STRING,
NAME1 TYPE STRING,
CITY1 TYPE STRING,
POST_CODE1 TYPE STRING,
POST_CODE2 TYPE STRING,
POST_CODE3 TYPE STRING,
STREET TYPE STRING,
STREETCODE TYPE STRING,
HOUSE_NUM1 TYPE STRING,
PO_BOX TYPE STRING,
PO_BOX_LOC TYPE STRING,
TRANSPZONE TYPE STRING,
CITY_CODE TYPE STRING,
CITYP_CODE TYPE STRING,
COUNTRY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LOCATION_I_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_LOCATION_I_STR-KNOTE sy-vline 
WA_LOCATION_I_STR-VSTEL sy-vline 
WA_LOCATION_I_STR-LSTEL sy-vline 
WA_LOCATION_I_STR-KUNNR sy-vline 
WA_LOCATION_I_STR-KUNABL sy-vline 
WA_LOCATION_I_STR-LIFNR sy-vline 
WA_LOCATION_I_STR-WERKS sy-vline 
WA_LOCATION_I_STR-LGORT sy-vline 
WA_LOCATION_I_STR-LGNUM sy-vline 
WA_LOCATION_I_STR-TOR sy-vline 
WA_LOCATION_I_STR-BELAD sy-vline 
WA_LOCATION_I_STR-NAME1 sy-vline 
WA_LOCATION_I_STR-CITY1 sy-vline 
WA_LOCATION_I_STR-POST_CODE1 sy-vline 
WA_LOCATION_I_STR-POST_CODE2 sy-vline 
WA_LOCATION_I_STR-POST_CODE3 sy-vline 
WA_LOCATION_I_STR-STREET sy-vline 
WA_LOCATION_I_STR-STREETCODE sy-vline 
WA_LOCATION_I_STR-HOUSE_NUM1 sy-vline 
WA_LOCATION_I_STR-PO_BOX sy-vline 
WA_LOCATION_I_STR-PO_BOX_LOC sy-vline 
WA_LOCATION_I_STR-TRANSPZONE sy-vline 
WA_LOCATION_I_STR-CITY_CODE sy-vline 
WA_LOCATION_I_STR-CITYP_CODE sy-vline 
WA_LOCATION_I_STR-COUNTRY sy-vline      INTO ld_text SEPARATED BY SPACE.

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