ABAP Select data from SAP table DB6UTIL_LCKWT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB6UTIL_LCKWT 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 DB6UTIL_LCKWT. 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 DB6UTIL_LCKWT 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_DB6UTIL_LCKWT TYPE STANDARD TABLE OF DB6UTIL_LCKWT,
      WA_DB6UTIL_LCKWT TYPE DB6UTIL_LCKWT,
      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: <DB6UTIL_LCKWT> TYPE DB6UTIL_LCKWT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB6UTIL_LCKWT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB6UTIL_LCKWT
  INTO TABLE IT_DB6UTIL_LCKWT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB6UTIL_LCKWT
*  INTO TABLE @DATA(IT_DB6UTIL_LCKWT2).
*--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_DB6UTIL_LCKWT INDEX 1 INTO DATA(WA_DB6UTIL_LCKWT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB6UTIL_LCKWT ASSIGNING <DB6UTIL_LCKWT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB6UTIL_LCKWT>-AID = 1.
<DB6UTIL_LCKWT>-LM = 1.
<DB6UTIL_LCKWT>-LM_R = 1.
<DB6UTIL_LCKWT>-LO_TYPE = 1.
<DB6UTIL_LCKWT>-AID_HL = 1.

ENDLOOP.

LOOP AT IT_DB6UTIL_LCKWT INTO WA_DB6UTIL_LCKWT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB6UTIL_LCKWT-APPL_STATUS, sy-vline,
  WA_DB6UTIL_LCKWT-CLIENT_PID, sy-vline,
  WA_DB6UTIL_LCKWT-START_TIME, sy-vline,
  WA_DB6UTIL_LCKWT-WAIT_TIME, sy-vline,
  WA_DB6UTIL_LCKWT-PARTITION, sy-vline,
  WA_DB6UTIL_LCKWT-ESCAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB6UTIL_LCKWT 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_DB6UTIL_LCKWT 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_DB6UTIL_LCKWT INTO WA_DB6UTIL_LCKWT.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_DB6UTIL_LCKWT_STR, 
AID TYPE STRING,
LM TYPE STRING,
LM_R TYPE STRING,
LO_TYPE TYPE STRING,
AID_HL TYPE STRING,
APPL_STATUS TYPE STRING,
CLIENT_PID TYPE STRING,
START_TIME TYPE STRING,
WAIT_TIME TYPE STRING,
PARTITION TYPE STRING,
ESCAL TYPE STRING,
TABLE TYPE STRING,
SCHEMA TYPE STRING,
TBSNAME TYPE STRING,
APPL_NAME TYPE STRING,
APPL_ID TYPE STRING,
TPMON_CLIENT_USERID TYPE STRING,
TPMON_CLIENT_WKSTN TYPE STRING,
TPMON_CLIENT_APP TYPE STRING,
TPMON_ACC_STR TYPE STRING,
STMT_TEXT TYPE STRING,
APPLS_WAITING_ON_APPL TYPE STRING,
STATUS_FLAG TYPE STRING,
GROUP_ID TYPE STRING,
START_TIME_RAW TYPE STRING,
WAIT_TIME_MS TYPE STRING,
CURRENT_TIMESTAMP_RAW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB6UTIL_LCKWT_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_DB6UTIL_LCKWT_STR-AID sy-vline 
WA_DB6UTIL_LCKWT_STR-LM sy-vline 
WA_DB6UTIL_LCKWT_STR-LM_R sy-vline 
WA_DB6UTIL_LCKWT_STR-LO_TYPE sy-vline 
WA_DB6UTIL_LCKWT_STR-AID_HL sy-vline 
WA_DB6UTIL_LCKWT_STR-APPL_STATUS sy-vline 
WA_DB6UTIL_LCKWT_STR-CLIENT_PID sy-vline 
WA_DB6UTIL_LCKWT_STR-START_TIME sy-vline 
WA_DB6UTIL_LCKWT_STR-WAIT_TIME sy-vline 
WA_DB6UTIL_LCKWT_STR-PARTITION sy-vline 
WA_DB6UTIL_LCKWT_STR-ESCAL sy-vline 
WA_DB6UTIL_LCKWT_STR-TABLE sy-vline 
WA_DB6UTIL_LCKWT_STR-SCHEMA sy-vline 
WA_DB6UTIL_LCKWT_STR-TBSNAME sy-vline 
WA_DB6UTIL_LCKWT_STR-APPL_NAME sy-vline 
WA_DB6UTIL_LCKWT_STR-APPL_ID sy-vline 
WA_DB6UTIL_LCKWT_STR-TPMON_CLIENT_USERID sy-vline 
WA_DB6UTIL_LCKWT_STR-TPMON_CLIENT_WKSTN sy-vline 
WA_DB6UTIL_LCKWT_STR-TPMON_CLIENT_APP sy-vline 
WA_DB6UTIL_LCKWT_STR-TPMON_ACC_STR sy-vline 
WA_DB6UTIL_LCKWT_STR-STMT_TEXT sy-vline 
WA_DB6UTIL_LCKWT_STR-APPLS_WAITING_ON_APPL sy-vline 
WA_DB6UTIL_LCKWT_STR-STATUS_FLAG sy-vline 
WA_DB6UTIL_LCKWT_STR-GROUP_ID sy-vline 
WA_DB6UTIL_LCKWT_STR-START_TIME_RAW sy-vline 
WA_DB6UTIL_LCKWT_STR-WAIT_TIME_MS sy-vline 
WA_DB6UTIL_LCKWT_STR-CURRENT_TIMESTAMP_RAW sy-vline      INTO ld_text SEPARATED BY SPACE.

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