ABAP Select data from SAP table VLCSEARCH_USER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VLCSEARCH_USER
*  INTO TABLE @DATA(IT_VLCSEARCH_USER2).
*--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_VLCSEARCH_USER INDEX 1 INTO DATA(WA_VLCSEARCH_USER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VLCSEARCH_USER>-ROLE_SEARCH = 1.
<VLCSEARCH_USER>-VHSAR = 1.
<VLCSEARCH_USER>-UNAME = 1.
<VLCSEARCH_USER>-ROLE = 1.
<VLCSEARCH_USER>-WERKS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VLCSEARCH_USER-VKORG, sy-vline,
  WA_VLCSEARCH_USER-VTWEG, sy-vline,
  WA_VLCSEARCH_USER-SPART, sy-vline,
  WA_VLCSEARCH_USER-AUART, sy-vline,
  WA_VLCSEARCH_USER-KUNNR, sy-vline,
  WA_VLCSEARCH_USER-KUNWE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VLCSEARCH_USER 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_VLCSEARCH_USER 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_VLCSEARCH_USER INTO WA_VLCSEARCH_USER.


*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 AUART, internal->external for field AUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_VLCSEARCH_USER-AUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VLCSEARCH_USER-AUART.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field KUNRG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VLCSEARCH_USER-KUNRG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VLCSEARCH_USER-KUNRG.
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_VLCSEARCH_USER_STR, 
ROLE_SEARCH TYPE STRING,
VHSAR TYPE STRING,
UNAME TYPE STRING,
ROLE TYPE STRING,
WERKS TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
AUART TYPE STRING,
KUNNR TYPE STRING,
KUNWE TYPE STRING,
KUNRG TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
BSART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VLCSEARCH_USER_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_VLCSEARCH_USER_STR-ROLE_SEARCH sy-vline 
WA_VLCSEARCH_USER_STR-VHSAR sy-vline 
WA_VLCSEARCH_USER_STR-UNAME sy-vline 
WA_VLCSEARCH_USER_STR-ROLE sy-vline 
WA_VLCSEARCH_USER_STR-WERKS sy-vline 
WA_VLCSEARCH_USER_STR-VKORG sy-vline 
WA_VLCSEARCH_USER_STR-VTWEG sy-vline 
WA_VLCSEARCH_USER_STR-SPART sy-vline 
WA_VLCSEARCH_USER_STR-AUART sy-vline 
WA_VLCSEARCH_USER_STR-KUNNR sy-vline 
WA_VLCSEARCH_USER_STR-KUNWE sy-vline 
WA_VLCSEARCH_USER_STR-KUNRG sy-vline 
WA_VLCSEARCH_USER_STR-EKORG sy-vline 
WA_VLCSEARCH_USER_STR-EKGRP sy-vline 
WA_VLCSEARCH_USER_STR-BSART sy-vline      INTO ld_text SEPARATED BY SPACE.

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