SQL MAX QUERY / SQL COUNT QUERY

Hi all,
i would like to get the value of the number of rows i have, but i dun seem to work it out with the getRow statements. i think the syntax of my statement is ok, but maybe i am doing the wrong way to get the value out.
I tried with COUNT, and it gives me the same error.
The error is: java.sql.SQLException: Column not found
This is the part of my code
Connection con;
String Q;
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con = DriverManager.getConnection("jdbc:odbc:RFID Logistics");
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery("SELECT MAX(Queue) FROM Forklift1");
while(rs.next())
                    Q = rs.getString("Queue");
                    System.out.println(Q);
          catch(ClassNotFoundException f)
               f.printStackTrace();
          catch(SQLException f)
               f.printStackTrace();
Thx alot in advance =)

Please use code tags when posting code. There is a code button above the message editor that inserts the tags.
Do you want to get the number of rows? If soConnection con;
int num = 0;
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con = DriverManager.getConnection("jdbc:odbc:RFID Logistics");
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery("SELECT COUNT(*) FROM Forklift1");
while(rs.next())
num = rs.getInt(1);
System.out.println(num );
rs.close();
stmt.close();
catch(ClassNotFoundException f)
f.printStackTrace();
catch(SQLException f)
f.printStackTrace();
}This is untested, but should be close enough.

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    Package Body contains actual procedures and local declaration of the procedures and cursor declarations.
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    Procedure Specification and Procedure Body.
    23 What are the return values of functions SQLCODE and SQLERRM ?
    SQLCODE returns the latest code of the error that has occurred.
    SQLERRM returns the relevant error message of the SQLCODE.
    24 What are the PL/SQL Statements used in cursor processing ?
    DECLARE CURSOR cursor name, OPEN cursor name, FETCH cursor name INTO or Record types, CLOSE cursor name.
    25 What are the modes of parameters that can be passed to a procedure ?
    IN,OUT,IN-OUT parameters.
    26 What are the datatypes a available in PL/SQL ?
    Some scalar data types such as NUMBER, VARCHAR2, DATE, CHAR, LONG, BOOLEAN.
    Some composite data types such as RECORD & TABLE.
    27 What are the cursor attributes used in PL/SQL ?
    %ISOPEN - to check whether cursor is open or not
    % ROWCOUNT - number of rows fetched/updated/deleted.
    % FOUND - to check whether cursor has fetched any row. True if rows are fetched.
    % NOT FOUND - to check whether cursor has fetched any row. True if no rows are featched.
    These attributes are proceeded with SQL for Implicit Cursors and with Cursor name for Explicit Cursors.
    28 What are the components of a PL/SQL Block ?
    Declarative part, Executable part and Exception part.
    Datatypes PL/SQL
    29 What are the components of a PL/SQL block ?
    A set of related declarations and procedural statements is called block.
    30 What are advantages fo Stored Procedures /
    Extensibility,Modularity, Reusability, Maintainability and one time compilation.
    31 Name the tables where characteristics of Package, procedure and functions are stored ?
    User_objects, User_Source and User_error.
    32 Is it possible to use Transaction control Statements such a ROLLBACK or COMMIT in Database Trigger ? Why ?
    It is not possible. As triggers are defined for each table, if you use COMMIT of ROLLBACK in a trigger, it affects logical transaction processing.
    33 How packaged procedures and functions are called from the following?
    a. Stored procedure or anonymous block
    b. an application program such a PRC C, PRO COBOL
    c. SQL *PLUS
    a. PACKAGE NAME.PROCEDURE NAME (parameters);
    variable := PACKAGE NAME.FUNCTION NAME (arguments);
    EXEC SQL EXECUTE
    b.
    BEGIN
    PACKAGE NAME.PROCEDURE NAME (parameters)
    variable := PACKAGE NAME.FUNCTION NAME (arguments);
    END;
    END EXEC;
    c. EXECUTE PACKAGE NAME.PROCEDURE if the procedures does not have any
    out/in-out parameters. A function can not be called.
    34 How many types of database triggers can be specified on a table ? What are they ?
    Insert Update Delete
    Before Row o.k. o.k. o.k.
    After Row o.k. o.k. o.k.
    Before Statement o.k. o.k. o.k.
    After Statement o.k. o.k. o.k.
    If FOR EACH ROW clause is specified, then the trigger for each Row affected by the statement.
    If WHEN clause is specified, the trigger fires according to the returned Boolean value.
    35 Give the structure of the procedure ?
    PROCEDURE name (parameter list.....)
    is
    local variable declarations
    BEGIN
    Executable statements.
    Exception.
    exception handlers
    end;
    36 Give the structure of the function ?
    FUNCTION name (argument list .....) Return datatype is
    local variable declarations
    Begin
    executable statements
    Exception
    execution handlers
    End;
    37 Explain the usage of WHERE CURRENT OF clause in cursors ?
    WHERE CURRENT OF clause in an UPDATE,DELETE statement refers to the latest row fetched from a cursor.
    Database Triggers
    38 Explain the two type of Cursors ?
    There are two types of cursors, Implicit Cursor and Explicit Cursor.
    PL/SQL uses Implicit Cursors for queries.
    User defined cursors are called Explicit Cursors. They can be declared and used.
    39 Explain how procedures and functions are called in a PL/SQL block ?
    Function is called as part of an expression.
    sal := calculate_sal ('a822');
    procedure is called as a PL/SQL statement
    calculate_bonus ('A822');
    Programmatic Constructs
    Last Update: September 06, 2004
    1 What are the different types of PL/SQL program units that can be defined and stored in ORACLE database ?
    Procedures and Functions,Packages and Database Triggers.
    2 What are the differences between Database Trigger and Integrity constraints ?
    A declarative integrity constraint is a statement about the database that is always true. A constraint applies to existing data in the table and any statement that manipulates the table.
    A trigger does not apply to data loaded before the definition of the trigger, therefore, it does not guarantee all data in a table conforms to the rules established by an associated trigger.
    A trigger can be used to enforce transitional constraints where as a declarative integrity constraint cannot be used.
    3 What is difference between Procedures and Functions ?
    A Function returns a value to the caller where as a Procedure does not.
    4 What is Database Trigger ?
    A Database Trigger is procedure (set of SQL and PL/SQL statements) that is automatically executed as a result of an insert in,update to, or delete from a table.
    5 What is a Procedure ?
    A Procedure consist of a set of SQL and PL/SQL statements that are grouped together as a unit to solve a specific problem or perform a set of related tasks.
    6 What is a Package ?
    A Package is a collection of related procedures, functions, variables and other package constructs together as a unit in the database.
    7 What are the uses of Database Trigger ?
    Database triggers can be used to automatic data generation, audit data modifications, enforce complex Integrity constraints, and customize complex security authorizations.
    8 What are the advantages of having a Package ?
    Increased functionality (for example,global package variables can be declared and used by any proecdure in the package) and performance (for example all objects of the package are parsed compiled, and loaded into memory once)
    1 With which function of summary item is the compute at options required?
    percentage of total functions.
    2 Why is it preferable to create a fewer no. of queries in the data model?
    Because for each query, report has to open a separate cursor and has to rebind, execute and fetch data.
    3 Why is a Where clause faster than a group filter or a format trigger?
    Because, in a where clause the condition is applied during data retrieval than after retrieving the data.
    4 Which parameter can be used to set read level consistency across multiple queries?
    Read only.
    5 Which of the two views should objects according to possession?
    view by structure.
    6 Which of the above methods is the faster method?
    performing the calculation in the query is faster.
    7 Where is the external query executed at the client or the server?
    At the server.
    8 Where is a procedure return in an external pl/sql library executed at the client or at the server?
    At the client.
    9 When do you use data parameter type?
    When the value of a data parameter being passed to a called product is always the name of the record group defined in the current form. Data parameters are used to pass data to produts invoked with the run_product built-in subprogram.
    10 When a form is invoked with call_form, Does oracle forms issues a save point?
    Yes
    11 What are the important difference between property clause and visual attributes?
    Named visual attributes differ only font, color & pattern attributes, property clauses can contain this and any other properties. You can change the appearance of objects at run time by changing the named visual attributes programmatically , property clause assignments cannot be changed programmatically. When an object is inheriting from both a property clause and named visual attribute, the named visual attribute settings take precedence, and any visual attribute properties in the class are ignored.
    12 What use of command line parameter cmd file?
    It is a command line argument that allows you to specify a file that contain a set of arguments for r20run.
    13 What is WHEN-Database-record trigger?
    Fires when oracle forms first marks a record as an insert or an update. The trigger fires as soon as oracle forms determines through validation that the record should be processed by the next post or commit as an insert or update. c generally occurs only when the operators modifies the first item in the record, and after the operator attempts to navigate out of the item.
    14 What is use of term?
    The term file which key is correspond to which oracle report functions.
    15 What is trigger associated with the timer?
    When-timer-expired.
    16 What is the use of transactional triggers?
    Using transactional triggers we can control or modify the default functionality of the oracle forms.
    17 What is the use of place holder column?
    A placeholder column is used to hold calculated values at a specified place rather than allowing is to appear in the actual row where it has to appear.
    18 What is the use of image_zoom built-in?
    To manipulate images in image items.
    19 What is the use of hidden column?
    A hidden column is used to when a column has to embed into boilerplate text.
    20 What is the use of break group?
    A break group is used to display one record for one group ones. While multiple related records in other group can be displayed.
    21 What is the remove on exit property?
    For a modelless window, it determines whether oracle forms hides the window automatically when the operators navigates to an item in the another window.
    22 What is the purpose of the product order option in the column property sheet?
    To specify the order of individual group evaluation in a cross products.
    23 What is the maximum no of chars the parameter can store?
    The maximum no of chars the parameter can store is only valid for char parameters, which can be upto 64K. No parameters default to 23Bytes and Date parameter default to 7Bytes.
    24 What is the main diff. bet. Reports 2.0 & Reports 2.5?
    Report 2.5 is object oriented.
    25 What is the frame & repeating frame?
    A frame is a holder for a group of fields. A repeating frame is used to display a set of records when the no. of records that are to displayed is not known before.
    26 What is the difference between OLE Server & Ole Container?
    An Ole server application creates ole Objects that are embedded or linked in ole Containers ex. Ole servers are ms_word & ms_excel. OLE containers provide a place to store, display and manipulate objects that are created by ole server applications. Ex. oracle forms is an example of an ole Container.
    27 What is the difference between object embedding & linking in Oracle forms?
    In Oracle forms, Embedded objects become part of the form module, and linked objects are references from a form module to a linked source file.
    28 What is the difference between boiler plat images and image items?
    Boiler plate Images are static images (Either vector or bit map) that you import from the file system or database to use a graphical elements in your form, such as company logos and maps. Image items are special types of interface controls that store and display either vector or bitmap images. Like other items that store values, image items can be either base table items(items that relate directly to database columns) or control items. The definition of an image item is stored as part of the form module FMB and FMX files, but no image file is actually associated with an image item until the item is populate at run time.
    29 What is the difference between $$DATE$$ & $$DBDATE$$ $$DBDATE$$ retrieves the current database date $$date$$ retrieves the current operating system date.
    30 What is the diff. when Flex mode is mode on and when it is off?
    When flex mode is on, reports automatically resizes the parent when the child is resized.
    31 What is the diff. when confine mode is on and when it is off?
    When confine mode is on, an object cannot be moved outside its parent in the layout.
    32 What is the diff. bet. setting up of parameters in reports 2.0 reports 2.5?
    LOVs can be attached to parameters in the reports 2.5 parameter form.
    33 What is the advantage of the library?
    Libraries provide a convenient means of storing client-side program units and sharing them among multiple applications. Once you create a library, you can attach it to any other form, menu, or library modules. When you can call library program units from triggers menu items commands and user named routine, you write in the modules to which you have attach the library. When a library attaches another library, program units in the first library can reference program units in the attached library. Library support dynamic loading-that is library program units are loaded into an application only when needed. This can significantly reduce the run-time memory requirements of applications.
    34 What is term?
    The term is terminal definition file that describes the terminal form which you are using r20run.
    35 What is system.coordination_operation?
    It represents the coordination causing event that occur on the master block in master-detail relation.
    36 What is synchronize?
    It is a terminal screen with the internal state of the form. It updates the screen display to reflect the information that oracle forms has in its internal representation of the screen.
    37 What is strip sources generate options?
    Removes the source code from the library file and generates a library files that contains only pcode. The resulting file can be used for final deployment, but can not be subsequently edited in the designer. ex. f45gen module=old_lib.pll userid=scott/tiger strip_source YES output_file
    38 What is relation between the window and canvas views?
    Canvas views are the back ground objects on which you place the interface items (Text items), check boxes, radio groups etc.,) and boilerplate objects (boxes, lines, images etc.,) that operators interact with us they run your form . Each canvas views displayed in a window.
    39 What is pop list?
    The pop list style list item appears initially as a single field (similar to a text item field). When the operator selects the list icon, a list of available choices appears.
    40 What is new_form built-in?
    When one form invokes another form by executing new_form oracle form exits the first form and releases its memory before loading the new form calling new form completely replace the first with the second. If there are changes pending in the first form, the operator will be prompted to save them before the new form is loaded.
    41 What is lexical reference? How can it be created?
    Lexical reference is place_holder for text that can be embedded in a sql statements. A lexical reference can be created using & before the column or parameter name.
    42 What is forms_DDL?
    Issues dynamic Sql statements at run time, including server side pl/SQl and DDL
    43 What is difference between open_form and call_form?
    when one form invokes another form by executing open_form the first form remains displayed, and operators can navigate between the forms as desired. when one form invokes another form by executing call_form, the called form is modal with respect to the calling form. That is, any windows that belong to the calling form are disabled, and operators cannot navigate to them until they first exit the called form.
    44 What is bind reference and how can it be created?
    Bind reference are used to replace the single value in sql, pl/sql statements a bind reference can be created using a (:) before a column or a parameter name.
    45 What is an user exit used for?
    A way in which to pass control (and possibly arguments ) form Oracle report to another Oracle products of 3 GL and then return control ( and ) back to Oracle reports.
    46 What is an OLE?
    Object Linking & Embedding provides you with the capability to integrate objects from many Ms-Windows applications into a single compound document creating integrated applications enables you to use the features form .
    47 What is an object group?
    An object group is a container for a group of objects; you define an object group when you want to package related objects, so that you copy or reference them in other modules.
    48 What is an anchoring object & what is its use?
    An anchoring object is a print condition object which used to explicitly or implicitly anchor other objects to itself.
    49 What is a User_exit?
    Calls the user exit named in the user_exit_string. Invokes a 3Gl program by name which has been properly linked into your current oracle forms executable.
    50 What is a timer?
    Timer is an "internal time clock" that you can programmatically create to perform an action each time the timer expires.
    51 What is a Text_io Package?
    It allows you to read and write information to a file in the file system.
    52 What is a text list?
    The text list style list item appears as a rectangular box which displays the fixed number of values. When the text list contains values that can not be displayed, a vertical scroll bar appears, allowing the operator to view and select undisplayed values.
    53 What is a property clause?
    A property clause is a named object that contains a list of properties and their settings. Once you create a property clause you can base other object on it. An object based on a property can inherit the setting of any property in the clause that makes sense for that object.
    54 What is a physical page ? & What is a logical page ?
    A physical page is a size of a page. That is output by the printer. The logical page is the size of one page of the actual report as seen in the Previewer.
    55 What is a library?
    A library is a collection of subprograms including user named procedures, functions and packages.
    56 What is a difference between pre-select and pre-query?
    Fires during the execute query and count query processing after oracle forms constructs the select statement to be issued, but before the statement is actually issued. The pre-query trigger fires just before oracle forms issues the select statement to the database after the operator as define the example records by entering the query criteria in enter query mode. Pre-query trigger fires before pre-select trigger.
    57 What is a combo box?
    A combo box style list item combines the features found in list and text item. Unlike the pop list or the text list style list items, the combo box style list item will both display fixed values and accept one operator entered value.
    58 What does the term panel refer to with regard to pages?
    A panel is the no. of physical pages needed to print one logical page.
    59 What are visual attributes?
    Visual attributes are the font, color, pattern proprieties that you set for form and menu objects that appear in your application interface.
    60 What are three panes that appear in the run time pl/sql interpreter?
    1.Source pane. 2. interpreter pane. 3. Navigator pane.
    Regards
    B RANGARAJAN

  • How to write sql query for counting pairs from below table??

    Below is my SQL table structure.
    user_id | Name | join_side | left_leg | right_leg | Parent_id
    100001 Tinku Left 100002 100003 0
    100002 Harish Left 100004 100005 100001
    100003 Gorav Right 100006 100007 100001
    100004 Prince Left 100008 NULL 100002
    100005 Ajay Right NULL NULL 100002
    100006 Simran Left NULL NULL 100003
    100007 Raman Right NULL NULL 100003
    100008 Vijay Left NULL NULL 100004
    It is a binary table structure.. Every user has to add two per id under him, one is left_leg and second is right_leg... Parent_id is under which user current user is added.. Hope you will be understand..
    I have to write sql query for counting pairs under id "100001". i know there will be important role of parent_id for counting pairs. * what is pair( suppose if any user contains  both left_leg and right_leg id, then it is called pair.)
    I know there are three pairs under id "100001" :-
    1.  100002 and 100003
    2.  100004 and 100005
    3.  100006 and 100007
        100008 will not be counted as pair because it does not have right leg..
     But i dont know how to write sql query for this... Any help will be appreciated... This is my college project... And tommorow is the last date of submission.... Hope anyone will help me...
    Suppose i have to count pair for id '100002'. Then there is only one pair under id '100002'. i.e 100004 and 100005

    Sounds like this to me
    DECLARE @ID int
    SET @ID = 100001--your passed value
    SELECT left_leg,right_leg
    FROM table
    WHERE (user_id = @ID
    OR parent_id = @ID)
    AND left_leg IS NOT NULL
    AND right_leg IS NOT NULL
    Please Mark This As Answer if it helps to solve the issue Visakh ---------------------------- http://visakhm.blogspot.com/ https://www.facebook.com/VmBlogs

  • Bug SQL Dev 1.5.4 Build MAIN-5940 Exporting count(*) query results

    when trying to export query results containing an analytic count the export dialog fails to open:
    When running the following query
    select count(*) over (partition by dummy order by rownum) xx
      from dual;right clicking on the results grid and selecting export->xls (or any other format) fails to open the export dialog box.
    changing the asterisk (*) to another value e.g. 1 or dummy corrects this issue for this particular query as does changing the analytic fuction to an aggregate function.
    Edited by: Sentinel on Aug 12, 2009 11:05 AM

    I get the same error when exporting the same statement - however, there is a known problem with 1.5.4 and failing on exports of certain statements (see 1.5.3 - Export results to XLS ORA-00936 which talks about there still being problems in 1.5.4 although the thread is titled 1.5.3).
    theFurryOne

  • How to get sql server performance counters using query?

    Hai i want to see my sql server performance counters like, Full Scans/sec,  Buffer
    Cache Hit Ratio,  Database Transactions/sec, User
    Connections, Average Latch Wait Time (ms), Lock
    Waits/sec, Lock Timeouts/sec, Number
    of Deadlocks/sec, Total Server Memory, SQL
    Re-Compilations/sec, User Settable Query. If any one know how to get it by using query means, please help me.
    Thanks in advance

    Hello,
    Below is query created by Jonathan Kehayias for measuring Perfom counters using DMV sys.dm_os_performance_counter.
    You can download book from below link
    https://www.simple-talk.com/books/sql-books/troubleshooting-sql-server-a-guide-for-the-accidental-dba/
    DECLARE @CounterPrefix NVARCHAR(30)
    SET @CounterPrefix = CASE WHEN @@SERVICENAME = 'MSSQLSERVER'
    THEN 'SQLServer:'
    ELSE 'MSSQL$' + @@SERVICENAME + ':'
    END ;
    -- Capture the first counter set
    SELECT CAST(1 AS INT) AS collection_instance ,
    [OBJECT_NAME] ,
    counter_name ,
    instance_name ,
    cntr_value ,
    cntr_type ,
    CURRENT_TIMESTAMP AS collection_time
    INTO #perf_counters_init
    FROM sys.dm_os_performance_counters
    WHERE ( OBJECT_NAME = @CounterPrefix + 'Access Methods'
    AND counter_name = 'Full Scans/sec'
    OR ( OBJECT_NAME = @CounterPrefix + 'Access Methods'
    AND counter_name = 'Index Searches/sec'
    OR ( OBJECT_NAME = @CounterPrefix + 'Buffer Manager'
    AND counter_name = 'Lazy Writes/sec'
    OR ( OBJECT_NAME = @CounterPrefix + 'Buffer Manager'
    AND counter_name = 'Page life expectancy'
    OR ( OBJECT_NAME = @CounterPrefix + 'General Statistics'
    AND counter_name = 'Processes Blocked'
    OR ( OBJECT_NAME = @CounterPrefix + 'General Statistics'
    AND counter_name = 'User Connections'
    OR ( OBJECT_NAME = @CounterPrefix + 'Locks'
    AND counter_name = 'Lock Waits/sec'
    OR ( OBJECT_NAME = @CounterPrefix + 'Locks'
    AND counter_name = 'Lock Wait Time (ms)'
    OR ( OBJECT_NAME = @CounterPrefix + 'SQL Statistics'
    AND counter_name = 'SQL Re-Compilations/sec'
    OR ( OBJECT_NAME = @CounterPrefix + 'Memory Manager'
    AND counter_name = 'Memory Grants Pending'
    OR ( OBJECT_NAME = @CounterPrefix + 'SQL Statistics'
    AND counter_name = 'Batch Requests/sec'
    OR ( OBJECT_NAME = @CounterPrefix + 'SQL Statistics'
    AND counter_name = 'SQL Compilations/sec'
    -- Wait on Second between data collection
    WAITFOR DELAY '00:00:01'
    -- Capture the second counter set
    SELECT CAST(2 AS INT) AS collection_instance ,
    OBJECT_NAME ,
    counter_name ,
    instance_name ,
    cntr_value ,
    cntr_type ,
    CURRENT_TIMESTAMP AS collection_time
    INTO #perf_counters_second
    FROM sys.dm_os_performance_counters
    WHERE ( OBJECT_NAME = @CounterPrefix + 'Access Methods'
    AND counter_name = 'Full Scans/sec'
    OR ( OBJECT_NAME = @CounterPrefix + 'Access Methods'
    AND counter_name = 'Index Searches/sec'
    OR ( OBJECT_NAME = @CounterPrefix + 'Buffer Manager'
    AND counter_name = 'Lazy Writes/sec'
    OR ( OBJECT_NAME = @CounterPrefix + 'Buffer Manager'
    AND counter_name = 'Page life expectancy'
    OR ( OBJECT_NAME = @CounterPrefix + 'General Statistics'
    AND counter_name = 'Processes Blocked'
    OR ( OBJECT_NAME = @CounterPrefix + 'General Statistics'
    AND counter_name = 'User Connections'
    OR ( OBJECT_NAME = @CounterPrefix + 'Locks'
    AND counter_name = 'Lock Waits/sec'
    OR ( OBJECT_NAME = @CounterPrefix + 'Locks'
    AND counter_name = 'Lock Wait Time (ms)'
    OR ( OBJECT_NAME = @CounterPrefix + 'SQL Statistics'
    AND counter_name = 'SQL Re-Compilations/sec'
    OR ( OBJECT_NAME = @CounterPrefix + 'Memory Manager'
    AND counter_name = 'Memory Grants Pending'
    OR ( OBJECT_NAME = @CounterPrefix + 'SQL Statistics'
    AND counter_name = 'Batch Requests/sec'
    OR ( OBJECT_NAME = @CounterPrefix + 'SQL Statistics'
    AND counter_name = 'SQL Compilations/sec'
    -- Calculate the cumulative counter values
    SELECT i.OBJECT_NAME ,
    i.counter_name ,
    i.instance_name ,
    CASE WHEN i.cntr_type = 272696576
    THEN s.cntr_value - i.cntr_value
    WHEN i.cntr_type = 65792 THEN s.cntr_value
    END AS cntr_value
    FROM #perf_counters_init AS i
    JOIN #perf_counters_second AS s
    ON i.collection_instance + 1 = s.collection_instance
    AND i.OBJECT_NAME = s.OBJECT_NAME
    AND i.counter_name = s.counter_name
    AND i.instance_name = s.instance_name
    ORDER BY OBJECT_NAME
    -- Cleanup tables
    DROP TABLE #perf_counters_init
    DROP TABLE #perf_counters_second
    Please mark this reply as the answer or vote as helpful, as appropriate, to make it useful for other readers

  • Sql and load rule file query

    Currently loading the data with the script , which it contatins
    Retreving data from oracle through SQL interface on to rules files
    and loading the data.
    just my question is , if i get 0 records from oracle , i dont want to proceed with the loading of data (which is no useful ).
    Can i stop the loading if records are zero.

    As far as I know there is nothing in MaxLIt that could tell that there were no rows.The MaxL statement would return a zero code saying that the process worked ok. It would be prossible in your batch script to have mutiple calls to MaxL and between them to do something like make a call to your sql DB getting the count of rows for your query. Investigate the result and if it is zero, then get out of your load and calc process (I guess you could do that even before you try to load).
    Or how about scheduling a job that creates an output file with the count if it is greater than zero. If it is, then run the batch load process if it is not, then bypass it. There are multiple ways to do this outside of Essbase, just not in it.

  • Dynamic SQL within a SQL Query ?

    is there any possibility to do like this ?
    SELECT table_name, XXXXXXXX('SELECT Count(*) FROM '||table_name) tot_rows
      FROM dba_tables
    WHERE owner = 'SCOTT';or any other trick to run dynamic SQL within the SQL Query?
    Hoping....that it should be.
    Regards,
    Orapdev

    One small disadvantage: it is executing 202 SQL statements: 3 "user SQL statements" (the one above and the 2 "select count(*)..."), and 199 internal ones ...How did you get to those numbers?
    I just traced this statement and found completely different results:
    TKPROF: Release 10.2.0.3.0 - Production on Tue Jul 10 12:12:10 2007
    Copyright (c) 1982, 2005, Oracle.  All rights reserved.
    Trace file: diesl10r2_ora_5440.trc
    Sort options: default
    count    = number of times OCI procedure was executed
    cpu      = cpu time in seconds executing
    elapsed  = elapsed time in seconds executing
    disk     = number of physical reads of buffers from disk
    query    = number of buffers gotten for consistent read
    current  = number of buffers gotten in current mode (usually for update)
    rows     = number of rows processed by the fetch or execute call
    declare  cursor NlsParamsCursor is    SELECT * FROM
      nls_session_parameters;begin  SELECT Nvl(Lengthb(Chr(65536)),
      Nvl(Lengthb(Chr(256)), 1))    INTO :CharLength FROM dual;  for NlsRecord in
      NlsParamsCursor loop    if NlsRecord.parameter = 'NLS_DATE_LANGUAGE' then  
         :NlsDateLanguage := NlsRecord.value;    elsif NlsRecord.parameter =
      'NLS_DATE_FORMAT' then      :NlsDateFormat := NlsRecord.value;    elsif
      NlsRecord.parameter = 'NLS_NUMERIC_CHARACTERS' then     
      :NlsNumericCharacters := NlsRecord.value;    elsif NlsRecord.parameter =
      'NLS_TIMESTAMP_FORMAT' then      :NlsTimeStampFormat := NlsRecord.value;   
      elsif NlsRecord.parameter = 'NLS_TIMESTAMP_TZ_FORMAT' then     
      :NlsTimeStampTZFormat := NlsRecord.value;    end if;  end loop;end;
    call     count       cpu    elapsed       disk      query    current        rows
    Parse        1      0.00       0.00          0          0          0           0
    Execute      1      0.00       0.00          0          0          0           1
    Fetch        0      0.00       0.00          0          0          0           0
    total        2      0.00       0.00          0          0          0           1
    Misses in library cache during parse: 0
    Optimizer mode: ALL_ROWS
    Parsing user id: 50 
    SELECT NVL(LENGTHB(CHR(65536)), NVL(LENGTHB(CHR(256)), 1))
    FROM
    DUAL
    call     count       cpu    elapsed       disk      query    current        rows
    Parse        1      0.00       0.00          0          0          0           0
    Execute      1      0.01       0.00          0          0          0           0
    Fetch        1      0.00       0.00          0          0          0           1
    total        3      0.01       0.00          0          0          0           1
    Misses in library cache during parse: 0
    Optimizer mode: ALL_ROWS
    Parsing user id: 50     (recursive depth: 1)
    Rows     Row Source Operation
          1  FAST DUAL  (cr=0 pr=0 pw=0 time=7 us)
    SELECT *
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    NLS_SESSION_PARAMETERS
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    Parse        1      0.00       0.00          0          0          0           0
    Execute      1      0.00       0.00          0          0          0           0
    Fetch        1      0.00       0.00          0          0          0          17
    total        3      0.00       0.00          0          0          0          17
    Misses in library cache during parse: 0
    Optimizer mode: ALL_ROWS
    Parsing user id: 50     (recursive depth: 1)
    Rows     Row Source Operation
         17  FIXED TABLE FULL X$NLS_PARAMETERS (cr=0 pr=0 pw=0 time=124 us)
    select PARAMETER,VALUE
    from
    nls_session_parameters where PARAMETER in('NLS_NUMERIC_CHARACTERS',
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    Parse        1      0.00       0.00          0          0          0           0
    Execute      1      0.00       0.00          0          0          0           0
    Fetch        1      0.00       0.00          0          0          0           3
    total        3      0.00       0.00          0          0          0           3
    Misses in library cache during parse: 0
    Optimizer mode: ALL_ROWS
    Parsing user id: 50 
    Rows     Row Source Operation
          3  FIXED TABLE FULL X$NLS_PARAMETERS (cr=0 pr=0 pw=0 time=57 us)
    select to_char(9,'9C')
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    dual
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    Parse        1      0.00       0.00          0          0          0           0
    Execute      1      0.00       0.00          0          0          0           0
    Fetch        1      0.00       0.00          0          0          0           1
    total        3      0.00       0.00          0          0          0           1
    Misses in library cache during parse: 0
    Optimizer mode: ALL_ROWS
    Parsing user id: 50 
    Rows     Row Source Operation
          1  FAST DUAL  (cr=0 pr=0 pw=0 time=2 us)
    SELECT table_name,
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                                                                    ('//text').getstringval
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      FROM dba_tables
    WHERE table_name IN ('EMP', 'DEPT') AND owner = 'SCOTT'
    call     count       cpu    elapsed       disk      query    current        rows
    Parse        1      0.00       0.00          0          0          0           0
    Execute      1      0.00       0.00          0          0          0           0
    Fetch        1      0.01       0.02          0         48          0           2
    total        3      0.01       0.02          0         48          0           2
    Misses in library cache during parse: 0
    Optimizer mode: ALL_ROWS
    Parsing user id: 50 
    Rows     Row Source Operation
          2  HASH JOIN  (cr=42 pr=0 pw=0 time=2952 us)
          2   MERGE JOIN CARTESIAN (cr=42 pr=0 pw=0 time=1206 us)
          2    NESTED LOOPS OUTER (cr=42 pr=0 pw=0 time=478 us)
          2     NESTED LOOPS OUTER (cr=36 pr=0 pw=0 time=421 us)
          2      NESTED LOOPS OUTER (cr=30 pr=0 pw=0 time=379 us)
          2       NESTED LOOPS OUTER (cr=30 pr=0 pw=0 time=365 us)
          2        NESTED LOOPS  (cr=22 pr=0 pw=0 time=312 us)
          2         NESTED LOOPS  (cr=16 pr=0 pw=0 time=272 us)
          2          NESTED LOOPS  (cr=8 pr=0 pw=0 time=172 us)
          1           TABLE ACCESS BY INDEX ROWID USER$ (cr=2 pr=0 pw=0 time=56 us)
          1            INDEX UNIQUE SCAN I_USER1 (cr=1 pr=0 pw=0 time=30 us)(object id 44)
          2           INLIST ITERATOR  (cr=6 pr=0 pw=0 time=111 us)
          2            TABLE ACCESS BY INDEX ROWID OBJ$ (cr=6 pr=0 pw=0 time=87 us)
          2             INDEX RANGE SCAN I_OBJ2 (cr=4 pr=0 pw=0 time=54 us)(object id 37)
          2          TABLE ACCESS CLUSTER TAB$ (cr=8 pr=0 pw=0 time=98 us)
          2           INDEX UNIQUE SCAN I_OBJ# (cr=4 pr=0 pw=0 time=26 us)(object id 3)
          2         TABLE ACCESS CLUSTER TS$ (cr=6 pr=0 pw=0 time=39 us)
          2          INDEX UNIQUE SCAN I_TS# (cr=2 pr=0 pw=0 time=13 us)(object id 7)
          2        TABLE ACCESS CLUSTER SEG$ (cr=8 pr=0 pw=0 time=37 us)
          2         INDEX UNIQUE SCAN I_FILE#_BLOCK# (cr=4 pr=0 pw=0 time=21 us)(object id 9)
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          2      TABLE ACCESS BY INDEX ROWID OBJ$ (cr=6 pr=0 pw=0 time=33 us)
          2       INDEX UNIQUE SCAN I_OBJ1 (cr=4 pr=0 pw=0 time=23 us)(object id 36)
          2     TABLE ACCESS CLUSTER USER$ (cr=6 pr=0 pw=0 time=28 us)
          2      INDEX UNIQUE SCAN I_USER# (cr=2 pr=0 pw=0 time=12 us)(object id 11)
          2    BUFFER SORT (cr=0 pr=0 pw=0 time=716 us)
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    Parse        1      0.00       0.00          0          0          0           0
    Execute      1      0.00       0.00          0          0          0           0
    Fetch        2      0.00       0.00          0          1          0           1
    total        4      0.00       0.00          0          1          0           1
    Misses in library cache during parse: 0
    Optimizer mode: ALL_ROWS
    Parsing user id: 50     (recursive depth: 1)
    Rows     Row Source Operation
          1  SORT AGGREGATE (cr=1 pr=0 pw=0 time=96 us)
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    call     count       cpu    elapsed       disk      query    current        rows
    Parse        1      0.00       0.00          0          0          0           0
    Execute      1      0.00       0.00          0          0          0           0
    Fetch        1      0.00       0.00          0          2          0           1
    total        3      0.00       0.00          0          2          0           1
    Misses in library cache during parse: 0
    Optimizer mode: CHOOSE
    Parsing user id: SYS   (recursive depth: 1)
    Rows     Row Source Operation
          1  TABLE ACCESS BY INDEX ROWID KOPM$ (cr=2 pr=0 pw=0 time=42 us)
          1   INDEX UNIQUE SCAN I_KOPM1 (cr=1 pr=0 pw=0 time=22 us)(object id 365)
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    call     count       cpu    elapsed       disk      query    current        rows
    Parse        1      0.00       0.00          0          0          0           0
    Execute      1      0.00       0.00          0          0          0           0
    Fetch        2      0.00       0.00          0          1          0           1
    total        4      0.00       0.00          0          1          0           1
    Misses in library cache during parse: 0
    Optimizer mode: ALL_ROWS
    Parsing user id: 50     (recursive depth: 1)
    ALTER SESSION SET sql_trace=FALSE
    call     count       cpu    elapsed       disk      query    current        rows
    Parse        1      0.00       0.00          0          0          0           0
    Execute      1      0.00       0.00          0          0          0           0
    Fetch        0      0.00       0.00          0          0          0           0
    total        2      0.00       0.00          0          0          0           0
    Misses in library cache during parse: 0
    Parsing user id: 50 
    OVERALL TOTALS FOR ALL NON-RECURSIVE STATEMENTS
    call     count       cpu    elapsed       disk      query    current        rows
    Parse        5      0.00       0.00          0          0          0           0
    Execute      5      0.00       0.00          0          0          0           1
    Fetch        3      0.01       0.02          0         48          0           6
    total       13      0.01       0.03          0         48          0           7
    Misses in library cache during parse: 0
    OVERALL TOTALS FOR ALL RECURSIVE STATEMENTS
    call     count       cpu    elapsed       disk      query    current        rows
    Parse        5      0.00       0.00          0          0          0           0
    Execute      5      0.01       0.00          0          0          0           0
    Fetch        7      0.00       0.00          0          4          0          21
    total       17      0.01       0.00          0          4          0          21
    Misses in library cache during parse: 0
        9  user  SQL statements in session.
        1  internal SQL statements in session.
       10  SQL statements in session.
    Trace file: diesl10r2_ora_5440.trc
    Trace file compatibility: 10.01.00
    Sort options: default
           1  session in tracefile.
           9  user  SQL statements in trace file.
           1  internal SQL statements in trace file.
          10  SQL statements in trace file.
          10  unique SQL statements in trace file.
         132  lines in trace file.
           0  elapsed seconds in trace file.I only see a ratio of 1:9 for user- to internal SQL statements?
    michaels>  select * from v$version
    BANNER                                                         
    Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Prod
    PL/SQL Release 10.2.0.3.0 - Production                         
    CORE     10.2.0.3.0     Production                                     
    TNS for 32-bit Windows: Version 10.2.0.3.0 - Production        
    NLSRTL Version 10.2.0.3.0 - Production  

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    T01      newspaper
    T02      TV
    T03      radio
    T04      friends
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    Edited by: Li Mishan on Jul 17, 2008 9:36 AM
    Edited by: Li Mishan on Jul 17, 2008 9:40 AM

    I am sorry .It is just a mistake of my typewriting.
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    T01    newspaper
    T02    TV
    T03    radio
    T04    friends
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                                                AND (T0.DocDate <=@ToDate  or  @ToDate ='')                                                                               
    GROUP BY T0.CardCode
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    It Shows the following results
       CardCode     CardName     SONumber     name
    1      000070        Deng. Jiahua   1                newspaper
    2      000293        LU .Weijuan    1                radio
    3      000313         Xie .Jifang       3               TV
    Edited by: Li Mishan on Jul 18, 2008 4:42 AM
    Edited by: Li Mishan on Jul 18, 2008 4:43 AM
    Edited by: Li Mishan on Jul 18, 2008 5:43 AM

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    TO_CHAR(F.MANL_SIC_FCTR_NBR) MANSICFACTOR,
    TO_CHAR(F.UW_OVERD_SIC_FCTR_NBR) UWOVERDSICFACTOR,
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