ABAP Select data from SAP table SYBMON_LOCK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SYBMON_LOCK
*  INTO TABLE @DATA(IT_SYBMON_LOCK2).
*--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_SYBMON_LOCK INDEX 1 INTO DATA(WA_SYBMON_LOCK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SYBMON_LOCK>-DBNAME = 1.
<SYBMON_LOCK>-LOCKSTATE = 1.
<SYBMON_LOCK>-LOCKTYPE = 1.
<SYBMON_LOCK>-LOCKLEVEL = 1.
<SYBMON_LOCK>-BLOCKEDSTATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SYBMON_LOCK-SOURCECODEID, sy-vline,
  WA_SYBMON_LOCK-INSTANCEID, sy-vline,
  WA_SYBMON_LOCK-SPID, sy-vline,
  WA_SYBMON_LOCK-KPID, sy-vline,
  WA_SYBMON_LOCK-DBID, sy-vline,
  WA_SYBMON_LOCK-PARENTSPID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SYBMON_LOCK 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_SYBMON_LOCK 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_SYBMON_LOCK INTO WA_SYBMON_LOCK.


*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_SYBMON_LOCK_STR, 
DBNAME TYPE STRING,
LOCKSTATE TYPE STRING,
LOCKTYPE TYPE STRING,
LOCKLEVEL TYPE STRING,
BLOCKEDSTATE TYPE STRING,
SOURCECODEID TYPE STRING,
INSTANCEID TYPE STRING,
SPID TYPE STRING,
KPID TYPE STRING,
DBID TYPE STRING,
PARENTSPID TYPE STRING,
LOCKID TYPE STRING,
CONTEXT TYPE STRING,
WAITTIME TYPE STRING,
PAGENUMBER TYPE STRING,
ROWNUMBER TYPE STRING,
BLOCKEDBY TYPE STRING,
OBJECTID TYPE STRING,
TABOWNER TYPE STRING,
TABNAME TYPE STRING,
PARTITIONID TYPE STRING,
PARTITIONNAME TYPE STRING,
LOCKCOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SYBMON_LOCK_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_SYBMON_LOCK_STR-DBNAME sy-vline 
WA_SYBMON_LOCK_STR-LOCKSTATE sy-vline 
WA_SYBMON_LOCK_STR-LOCKTYPE sy-vline 
WA_SYBMON_LOCK_STR-LOCKLEVEL sy-vline 
WA_SYBMON_LOCK_STR-BLOCKEDSTATE sy-vline 
WA_SYBMON_LOCK_STR-SOURCECODEID sy-vline 
WA_SYBMON_LOCK_STR-INSTANCEID sy-vline 
WA_SYBMON_LOCK_STR-SPID sy-vline 
WA_SYBMON_LOCK_STR-KPID sy-vline 
WA_SYBMON_LOCK_STR-DBID sy-vline 
WA_SYBMON_LOCK_STR-PARENTSPID sy-vline 
WA_SYBMON_LOCK_STR-LOCKID sy-vline 
WA_SYBMON_LOCK_STR-CONTEXT sy-vline 
WA_SYBMON_LOCK_STR-WAITTIME sy-vline 
WA_SYBMON_LOCK_STR-PAGENUMBER sy-vline 
WA_SYBMON_LOCK_STR-ROWNUMBER sy-vline 
WA_SYBMON_LOCK_STR-BLOCKEDBY sy-vline 
WA_SYBMON_LOCK_STR-OBJECTID sy-vline 
WA_SYBMON_LOCK_STR-TABOWNER sy-vline 
WA_SYBMON_LOCK_STR-TABNAME sy-vline 
WA_SYBMON_LOCK_STR-PARTITIONID sy-vline 
WA_SYBMON_LOCK_STR-PARTITIONNAME sy-vline 
WA_SYBMON_LOCK_STR-LOCKCOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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