ABAP Select data from SAP table LOC_DEPT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP LOC_DEPT 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_DEPT. 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_DEPT 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_DEPT TYPE STANDARD TABLE OF LOC_DEPT,
      WA_LOC_DEPT TYPE LOC_DEPT,
      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_DEPT> TYPE LOC_DEPT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LOC_DEPT
*  INTO TABLE @DATA(IT_LOC_DEPT2).
*--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_DEPT INDEX 1 INTO DATA(WA_LOC_DEPT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LOC_DEPT>-KNOTA = 1.
<LOC_DEPT>-VSTEL = 1.
<LOC_DEPT>-LSTEL = 1.
<LOC_DEPT>-KUNNA = 1.
<LOC_DEPT>-KUNABLA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LOC_DEPT-LIFNA, sy-vline,
  WA_LOC_DEPT-WERKA, sy-vline,
  WA_LOC_DEPT-LGORTA, sy-vline,
  WA_LOC_DEPT-LGNUMA, sy-vline,
  WA_LOC_DEPT-TORA, sy-vline,
  WA_LOC_DEPT-BELAD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LOC_DEPT 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_DEPT 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_DEPT INTO WA_LOC_DEPT.


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

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

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

*Conversion exit ALPHA, internal->external for field ADRNAD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LOC_DEPT-ADRNAD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LOC_DEPT-ADRNAD.
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_DEPT_STR, 
KNOTA TYPE STRING,
VSTEL TYPE STRING,
LSTEL TYPE STRING,
KUNNA TYPE STRING,
KUNABLA TYPE STRING,
LIFNA TYPE STRING,
WERKA TYPE STRING,
LGORTA TYPE STRING,
LGNUMA TYPE STRING,
TORA TYPE STRING,
BELAD TYPE STRING,
ADRNA TYPE STRING,
ADRHNDA TYPE STRING,
ADRKNZA TYPE STRING,
UPDADA TYPE STRING,
ADRNAD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LOC_DEPT_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_DEPT_STR-KNOTA sy-vline 
WA_LOC_DEPT_STR-VSTEL sy-vline 
WA_LOC_DEPT_STR-LSTEL sy-vline 
WA_LOC_DEPT_STR-KUNNA sy-vline 
WA_LOC_DEPT_STR-KUNABLA sy-vline 
WA_LOC_DEPT_STR-LIFNA sy-vline 
WA_LOC_DEPT_STR-WERKA sy-vline 
WA_LOC_DEPT_STR-LGORTA sy-vline 
WA_LOC_DEPT_STR-LGNUMA sy-vline 
WA_LOC_DEPT_STR-TORA sy-vline 
WA_LOC_DEPT_STR-BELAD sy-vline 
WA_LOC_DEPT_STR-ADRNA sy-vline 
WA_LOC_DEPT_STR-ADRHNDA sy-vline 
WA_LOC_DEPT_STR-ADRKNZA sy-vline 
WA_LOC_DEPT_STR-UPDADA sy-vline 
WA_LOC_DEPT_STR-ADRNAD sy-vline      INTO ld_text SEPARATED BY SPACE.

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