ABAP Select data from SAP table LLOCT 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 LLOCT 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 LLOCT. 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 LLOCT 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_LLOCT TYPE STANDARD TABLE OF LLOCT,
      WA_LLOCT TYPE LLOCT,
      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: <LLOCT> TYPE LLOCT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LLOCT
*  INTO TABLE @DATA(IT_LLOCT2).
*--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_LLOCT INDEX 1 INTO DATA(WA_LLOCT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LLOCT>-MANDT = 1.
<LLOCT>-LOCAT = 1.
<LLOCT>-METRC = 1.
<LLOCT>-TIMZN = 1.
<LLOCT>-DSUOM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LLOCT-TMUOM, sy-vline,
  WA_LLOCT-VLUOM, sy-vline,
  WA_LLOCT-EMODE, sy-vline,
  WA_LLOCT-APLOG, sy-vline,
  WA_LLOCT-DGROP, sy-vline,
  WA_LLOCT-NRTSK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LLOCT 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_LLOCT 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_LLOCT INTO WA_LLOCT.


*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 CUNIT, internal->external for field DSUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LLOCT-DSUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LLOCT-DSUOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field TMUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LLOCT-TMUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LLOCT-TMUOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VLUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LLOCT-VLUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LLOCT-VLUOM.
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_LLOCT_STR, 
MANDT TYPE STRING,
LOCAT TYPE STRING,
METRC TYPE STRING,
TIMZN TYPE STRING,
DSUOM TYPE STRING,
TMUOM TYPE STRING,
VLUOM TYPE STRING,
EMODE TYPE STRING,
APLOG TYPE STRING,
DGROP TYPE STRING,
NRTSK TYPE STRING,
NRRSC TYPE STRING,
NRRQS TYPE STRING,
NRMSG TYPE STRING,
MINTK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LLOCT_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_LLOCT_STR-MANDT sy-vline 
WA_LLOCT_STR-LOCAT sy-vline 
WA_LLOCT_STR-METRC sy-vline 
WA_LLOCT_STR-TIMZN sy-vline 
WA_LLOCT_STR-DSUOM sy-vline 
WA_LLOCT_STR-TMUOM sy-vline 
WA_LLOCT_STR-VLUOM sy-vline 
WA_LLOCT_STR-EMODE sy-vline 
WA_LLOCT_STR-APLOG sy-vline 
WA_LLOCT_STR-DGROP sy-vline 
WA_LLOCT_STR-NRTSK sy-vline 
WA_LLOCT_STR-NRRSC sy-vline 
WA_LLOCT_STR-NRRQS sy-vline 
WA_LLOCT_STR-NRMSG sy-vline 
WA_LLOCT_STR-MINTK sy-vline      INTO ld_text SEPARATED BY SPACE.

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