ABAP Select data from SAP table LAW3_S_UC_USERLIST into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP LAW3_S_UC_USERLIST 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 LAW3_S_UC_USERLIST. 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 LAW3_S_UC_USERLIST 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_LAW3_S_UC_USERLIST TYPE STANDARD TABLE OF LAW3_S_UC_USERLIST,
      WA_LAW3_S_UC_USERLIST TYPE LAW3_S_UC_USERLIST,
      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: <LAW3_S_UC_USERLIST> TYPE LAW3_S_UC_USERLIST.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_LAW3_S_UC_USERLIST.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM LAW3_S_UC_USERLIST
  INTO TABLE IT_LAW3_S_UC_USERLIST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LAW3_S_UC_USERLIST
*  INTO TABLE @DATA(IT_LAW3_S_UC_USERLIST2).
*--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_LAW3_S_UC_USERLIST INDEX 1 INTO DATA(WA_LAW3_S_UC_USERLIST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_LAW3_S_UC_USERLIST ASSIGNING <LAW3_S_UC_USERLIST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LAW3_S_UC_USERLIST>-READ_ONLY = 1.
<LAW3_S_UC_USERLIST>-TRAFFIC_LIGHT = 1.
<LAW3_S_UC_USERLIST>-SY_SYSID = 1.
<LAW3_S_UC_USERLIST>-CLIENT = 1.
<LAW3_S_UC_USERLIST>-SYS_CLIENT = 1.

ENDLOOP.

LOOP AT IT_LAW3_S_UC_USERLIST INTO WA_LAW3_S_UC_USERLIST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LAW3_S_UC_USERLIST-BNAME, sy-vline,
  WA_LAW3_S_UC_USERLIST-NAME_FIRST, sy-vline,
  WA_LAW3_S_UC_USERLIST-NAME_LAST, sy-vline,
  WA_LAW3_S_UC_USERLIST-LIC_TYPE, sy-vline,
  WA_LAW3_S_UC_USERLIST-LIC_TYPE_TEXT, sy-vline,
  WA_LAW3_S_UC_USERLIST-LIC_TYPE_NEW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LAW3_S_UC_USERLIST 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_LAW3_S_UC_USERLIST 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_LAW3_S_UC_USERLIST INTO WA_LAW3_S_UC_USERLIST.


*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 USTYP, internal->external for field USTYP
CALL FUNCTION 'CONVERSION_EXIT_USTYP_OUTPUT'
  EXPORTING
    input =                      WA_LAW3_S_UC_USERLIST-USTYP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LAW3_S_UC_USERLIST-USTYP.
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_LAW3_S_UC_USERLIST_STR, 
READ_ONLY TYPE STRING,
TRAFFIC_LIGHT TYPE STRING,
SY_SYSID TYPE STRING,
CLIENT TYPE STRING,
SYS_CLIENT TYPE STRING,
BNAME TYPE STRING,
NAME_FIRST TYPE STRING,
NAME_LAST TYPE STRING,
LIC_TYPE TYPE STRING,
LIC_TYPE_TEXT TYPE STRING,
LIC_TYPE_NEW TYPE STRING,
LIC_TYPE_NEW_TEXT TYPE STRING,
USTYP TYPE STRING,
USTYPT TYPE STRING,
AC_CHECK TYPE STRING,
DEVELOPER TYPE STRING,
TRDAT TYPE STRING,
GLTGV TYPE STRING,
GLTGB TYPE STRING,
CLASSIFY_TYPE TYPE STRING,
CLASSIFY_TYPET TYPE STRING,
CLASS TYPE STRING,
REFUSER TYPE STRING,
ROLE_NAME TYPE STRING,
SURCHARGE TYPE STRING,
SURCHARGE_TEXT TYPE STRING,
SPRAS TYPE STRING,
VONDAT TYPE STRING,
BISDAT TYPE STRING,
MANDT2 TYPE STRING,
SYSID TYPE STRING,
ANAME TYPE STRING,
SORT TYPE STRING,
LIC_TYPE_ROLE TYPE STRING,
LIC_TYPE_OLD TYPE STRING,
CHANGED TYPE STRING,
RULE_01 TYPE STRING,
RULE_02 TYPE STRING,
RULE_03 TYPE STRING,
RULE_04 TYPE STRING,
RULE_05 TYPE STRING,
RULE_06 TYPE STRING,
RULE_07 TYPE STRING,
RULE_08 TYPE STRING,
RULE_09 TYPE STRING,
RULE_10 TYPE STRING,
RULE_11 TYPE STRING,
RULE_12 TYPE STRING,
RULE_13 TYPE STRING,
RULE_14 TYPE STRING,
RULE_15 TYPE STRING,
RULE_16 TYPE STRING,
RULE_17 TYPE STRING,
RULE_18 TYPE STRING,
RULE_19 TYPE STRING,
RULE_20 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LAW3_S_UC_USERLIST_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_LAW3_S_UC_USERLIST_STR-READ_ONLY sy-vline 
WA_LAW3_S_UC_USERLIST_STR-TRAFFIC_LIGHT sy-vline 
WA_LAW3_S_UC_USERLIST_STR-SY_SYSID sy-vline 
WA_LAW3_S_UC_USERLIST_STR-CLIENT sy-vline 
WA_LAW3_S_UC_USERLIST_STR-SYS_CLIENT sy-vline 
WA_LAW3_S_UC_USERLIST_STR-BNAME sy-vline 
WA_LAW3_S_UC_USERLIST_STR-NAME_FIRST sy-vline 
WA_LAW3_S_UC_USERLIST_STR-NAME_LAST sy-vline 
WA_LAW3_S_UC_USERLIST_STR-LIC_TYPE sy-vline 
WA_LAW3_S_UC_USERLIST_STR-LIC_TYPE_TEXT sy-vline 
WA_LAW3_S_UC_USERLIST_STR-LIC_TYPE_NEW sy-vline 
WA_LAW3_S_UC_USERLIST_STR-LIC_TYPE_NEW_TEXT sy-vline 
WA_LAW3_S_UC_USERLIST_STR-USTYP sy-vline 
WA_LAW3_S_UC_USERLIST_STR-USTYPT sy-vline 
WA_LAW3_S_UC_USERLIST_STR-AC_CHECK sy-vline 
WA_LAW3_S_UC_USERLIST_STR-DEVELOPER sy-vline 
WA_LAW3_S_UC_USERLIST_STR-TRDAT sy-vline 
WA_LAW3_S_UC_USERLIST_STR-GLTGV sy-vline 
WA_LAW3_S_UC_USERLIST_STR-GLTGB sy-vline 
WA_LAW3_S_UC_USERLIST_STR-CLASSIFY_TYPE sy-vline 
WA_LAW3_S_UC_USERLIST_STR-CLASSIFY_TYPET sy-vline 
WA_LAW3_S_UC_USERLIST_STR-CLASS sy-vline 
WA_LAW3_S_UC_USERLIST_STR-REFUSER sy-vline 
WA_LAW3_S_UC_USERLIST_STR-ROLE_NAME sy-vline 
WA_LAW3_S_UC_USERLIST_STR-SURCHARGE sy-vline 
WA_LAW3_S_UC_USERLIST_STR-SURCHARGE_TEXT sy-vline 
WA_LAW3_S_UC_USERLIST_STR-SPRAS sy-vline 
WA_LAW3_S_UC_USERLIST_STR-VONDAT sy-vline 
WA_LAW3_S_UC_USERLIST_STR-BISDAT sy-vline 
WA_LAW3_S_UC_USERLIST_STR-MANDT2 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-SYSID sy-vline 
WA_LAW3_S_UC_USERLIST_STR-ANAME sy-vline 
WA_LAW3_S_UC_USERLIST_STR-SORT sy-vline 
WA_LAW3_S_UC_USERLIST_STR-LIC_TYPE_ROLE sy-vline 
WA_LAW3_S_UC_USERLIST_STR-LIC_TYPE_OLD sy-vline 
WA_LAW3_S_UC_USERLIST_STR-CHANGED sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_01 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_02 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_03 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_04 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_05 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_06 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_07 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_08 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_09 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_10 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_11 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_12 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_13 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_14 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_15 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_16 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_17 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_18 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_19 sy-vline 
WA_LAW3_S_UC_USERLIST_STR-RULE_20 sy-vline      INTO ld_text SEPARATED BY SPACE.

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