ABAP Select data from SAP table LAW2_S_USMM_USER_PER_PART into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP LAW2_S_USMM_USER_PER_PART 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 LAW2_S_USMM_USER_PER_PART. 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 LAW2_S_USMM_USER_PER_PART 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_LAW2_S_USMM_USER_PER_PART TYPE STANDARD TABLE OF LAW2_S_USMM_USER_PER_PART,
      WA_LAW2_S_USMM_USER_PER_PART TYPE LAW2_S_USMM_USER_PER_PART,
      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: <LAW2_S_USMM_USER_PER_PART> TYPE LAW2_S_USMM_USER_PER_PART.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_LAW2_S_USMM_USER_PER_PART.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM LAW2_S_USMM_USER_PER_PART
  INTO TABLE IT_LAW2_S_USMM_USER_PER_PART.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LAW2_S_USMM_USER_PER_PART
*  INTO TABLE @DATA(IT_LAW2_S_USMM_USER_PER_PART2).
*--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_LAW2_S_USMM_USER_PER_PART INDEX 1 INTO DATA(WA_LAW2_S_USMM_USER_PER_PART2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_LAW2_S_USMM_USER_PER_PART ASSIGNING <LAW2_S_USMM_USER_PER_PART>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LAW2_S_USMM_USER_PER_PART>-UNAME = 1.
<LAW2_S_USMM_USER_PER_PART>-CMANDT = 1.
<LAW2_S_USMM_USER_PER_PART>-SYSID = 1.
<LAW2_S_USMM_USER_PER_PART>-CREATIONDATE = 1.
<LAW2_S_USMM_USER_PER_PART>-LASTLOGIN = 1.

ENDLOOP.

LOOP AT IT_LAW2_S_USMM_USER_PER_PART INTO WA_LAW2_S_USMM_USER_PER_PART.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LAW2_S_USMM_USER_PER_PART-FIRSTNAME, sy-vline,
  WA_LAW2_S_USMM_USER_PER_PART-LASTNAME, sy-vline,
  WA_LAW2_S_USMM_USER_PER_PART-PHONENUMBER, sy-vline,
  WA_LAW2_S_USMM_USER_PER_PART-EMAILADDR, sy-vline,
  WA_LAW2_S_USMM_USER_PER_PART-ACCOUNTID, sy-vline,
  WA_LAW2_S_USMM_USER_PER_PART-CLASSTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LAW2_S_USMM_USER_PER_PART 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_LAW2_S_USMM_USER_PER_PART 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_LAW2_S_USMM_USER_PER_PART INTO WA_LAW2_S_USMM_USER_PER_PART.


*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 SXIDN, internal->external for field EMAILADDR
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_LAW2_S_USMM_USER_PER_PART-EMAILADDR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LAW2_S_USMM_USER_PER_PART-EMAILADDR.
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_LAW2_S_USMM_USER_PER_PART_STR, 
UNAME TYPE STRING,
CMANDT TYPE STRING,
SYSID TYPE STRING,
CREATIONDATE TYPE STRING,
LASTLOGIN TYPE STRING,
FIRSTNAME TYPE STRING,
LASTNAME TYPE STRING,
PHONENUMBER TYPE STRING,
EMAILADDR TYPE STRING,
ACCOUNTID TYPE STRING,
CLASSTYPE TYPE STRING,
LICENSETYPE TYPE STRING,
VERSURCHARGE TYPE STRING,
SURCHARGE TYPE STRING,
UNIQUELAWGUID TYPE STRING,
EXTERNALID TYPE STRING,
USERTYPECOMBINATION TYPE STRING,
USERTYPECONS TYPE STRING,
CHARGINGSYSID TYPE STRING,
CHARGINGCLIENT TYPE STRING,
CHARGINGUSER TYPE STRING,
KOSTL TYPE STRING,
BLINE_CLF TYPE STRING,
BLINE_CLF_TYPE TYPE STRING,
BLINE_CLASS TYPE STRING,
BLINE_ADD_INFO TYPE STRING,
AUTO_CLF TYPE STRING,
AUTO_CLF_TYPE TYPE STRING,
AUTO_CLASS TYPE STRING,
AUTO_ADD_INFO TYPE STRING,
MANUAL_CLF TYPE STRING,
MANUAL_CLF_TYPE TYPE STRING,
MANUAL_CLASS TYPE STRING,
MANUAL_ADD_INFO TYPE STRING,
PERSOBJ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LAW2_S_USMM_USER_PER_PART_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_LAW2_S_USMM_USER_PER_PART_STR-UNAME sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-CMANDT sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-SYSID sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-CREATIONDATE sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-LASTLOGIN sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-FIRSTNAME sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-LASTNAME sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-PHONENUMBER sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-EMAILADDR sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-ACCOUNTID sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-CLASSTYPE sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-LICENSETYPE sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-VERSURCHARGE sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-SURCHARGE sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-UNIQUELAWGUID sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-EXTERNALID sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-USERTYPECOMBINATION sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-USERTYPECONS sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-CHARGINGSYSID sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-CHARGINGCLIENT sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-CHARGINGUSER sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-KOSTL sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-BLINE_CLF sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-BLINE_CLF_TYPE sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-BLINE_CLASS sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-BLINE_ADD_INFO sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-AUTO_CLF sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-AUTO_CLF_TYPE sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-AUTO_CLASS sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-AUTO_ADD_INFO sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-MANUAL_CLF sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-MANUAL_CLF_TYPE sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-MANUAL_CLASS sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-MANUAL_ADD_INFO sy-vline 
WA_LAW2_S_USMM_USER_PER_PART_STR-PERSOBJ sy-vline      INTO ld_text SEPARATED BY SPACE.

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