Simple Q about using a List in a bind variable

Using jDev 11.1.1.3, still new to this ADF stuff
In my UI i have a shuttle component that allows the user to move x number of items to the right pane. Each one of these items becomes part of a filter in a where clause of a query on my VO. Can I do this with a bind variable instead of constructing the where clause progromatically?
I need to accomplish this: vo.setWhereClause(attribute = 'w' OR 'x' OR 'y' OR 'Z'), where the list of params is dynamically generated in the UI.
Is there a way i can feed a List to a bind variable? Maybe I can use View Criteria to do this?
Thanks a lot.

You should use "IN" clause for this scenario:
Take a look at this blog post that describes the usage -
http://jobinesh.blogspot.com/2010/09/using-bind-variable-for-sql-statements.html
Thanks,
Navaneeth

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Originally when I used this View Object I could set this where clause by creating an ExecuteWithParams action in the page on the Iterator and set an executeable to invoke this when the page loads. This worked fine in the non-tree version.
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>
One observation has been the clause
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>
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1. How many rows are we talking about?
2. Are the rows being inserted into an empty table?
3. Are you running these queries during peak production hours or in a batch windows?
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SET AUTOTRACE TRACEONLY
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Plan hash value: 3956160932
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|   0 | SELECT STATEMENT |      |    14 |   546 |     3   (0)| 00:00:01 |
|   1 | TABLE ACCESS FULL| EMP |    14 |   546 |     3   (0)| 00:00:01 |
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Using arrays as type for bind variable

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Query don't use the right index when using bind variables

Hi people !
I need some help because I have an issue with a query that don t use the right Indexes as it should
First of all, I have mainly three tables :
ORDER : Table that contains description for each Order (approximately 1 000 000 Records)
ORDER_MVTS : Table that contains the tasks made (called movements) to set up each Orders
with quantity of packages prepared for each product (approximately 10 000 000 Records)
PRODUCT : Tables that contains the products (approximately 50 000 Records)
When I launch the query with hard coded values, it brings back response very fast
because it uses the right index (ORDER_DHR_VALID) which represent the date and hour of the order
(with format 'DD/MM/YYYY HH24:MI:SS'). The selectivity for this index is good.
NB 1: I have to use the trick " >= Trunc(date) and < trunc(date) +1 " to filter on a simple date because
the index contains hour and minutes (I know it wasn't probably a bright idea at conception time).
NB 2: The index on ORDER_MVTS.PRODUCT_CODE is'nt discriminating enough because there is'nt enough different products.
It's the same for index on CUSTOMER_CODE and on MVT_TYPE so only the index on ORDER.DHR_VALID is good.
Here is the correct explain plan when I execute the query with hard coded values :
SELECT SUM(ORDER_MVTS.NB_PACKAGE)
FROM ORDER_MVTS, PRODUCT, ORDER
WHERE ORDER.DHR_VALID >= TRUNC(to_date('14/11/2008 10:04:56','DD/MM/YYYY HH24:MI:SS'))
AND ORDER.DHR_VALID < TRUNC(to_date('14/11/2008 10:04:56','DD/MM/YYYY HH24:MI:SS')) + 1
AND ORDER_MVTS.MVT_TYPE = 'DELIVERY'
AND PRODUCT.CODE = ORDER_MVTS.PRODUCT_CODE
AND ORDER_MVTS.ORDER_CODE = ORDER.CODE
AND ORDER.CUSTOMER_CODE = 'ADIDAS'
AND PRODUCT.CODE = 1234
Rows Row Source Operation
1 SORT AGGREGATE
2 NESTED LOOPS
4 NESTED LOOPS
2 INDEX UNIQUE SCAN (object id 378548) --> PRODUCT_PK
4 TABLE ACCESS BY INDEX ROWID ORDER
777 INDEX RANGE SCAN (object id 378119) --> ORDER_DHR_VALID
2 TABLE ACCESS BY INDEX ROWID ORDER_MVTS
30 INDEX RANGE SCAN (object id 377784) --> ORDER_MVTS_ORDER_FK
Now the problem is when the query is used in a Cursor with bind variables.
It seems like Oracle don't use index on ORDER.DHR_VALID because he can't figure out that he have
to actually filter on a short period of time (only one day).
So Oracle uses the index on ORDER_MVTS.PRODUCT_CODE which is'nt a bright idea (it takes 10 secondes instead of just one)
Here is the bad explain plan :
Rows Row Source Operation
1 SORT AGGREGATE
2 NESTED LOOPS
722 NESTED LOOPS
2 INDEX UNIQUE SCAN (object id 378548) --> PRODUCT_PK
722 TABLE ACCESS BY INDEX ROWID ORDER_MVTS
1790 INDEX RANGE SCAN (object id 377777) --> ORDER_MVTS_PRODUCT_FK
2 TABLE ACCESS BY INDEX ROWID ORDER
1442 INDEX UNIQUE SCAN (object id 378439) --> ORDER_PK
Now I have found two solutions to this problem :
1) using a Hint to force the use of index on ORDER.DHR_VALID (with /*+ INDEX(ORDER ORDER_DHR_VALID) */ )
2) Using Dynamic SQL and keeping the date hard coded (but not the other values except mvt_type)
For example :
QUERY :=
'SELECT SUM(ORDER_MVTS.NB_PACKAGE)
FROM ORDER_MVTS, PRODUCT, ORDER
WHERE ORDER.DHR_VALID >= TRUNC(TO_DATE('''||To_char(P_DTE_VAL,'DD/MM/YYYY')||''',''DD/MM/YYYY'')) '||
AND ORDER.DHR_VALID < TRUNC(TO_DATE('''||To_char(P_DTE_VAL,'DD/MM/YYYY')||''',''DD/MM/YYYY'')) + 1 '||
AND ORDER_MVTS.MVT_TYPE = 'DELIVERY'
AND PRODUCT.CODE = ORDER_MVTS.PRODUCT_CODE
AND ORDER_MVTS.ORDER_CODE = ORDER.CODE
AND ORDER.CUSTOMER_CODE = :CUSTOMER
AND PRODUCT.CODE = :CODE ';
These two solutions work but Number 1 is bad in theory because it uses a Hint
and Number 2 may be difficult to code.
So my question is : Does someone knows another solution to force the use of index ORDER_DHR_VALID that can be simple and reliable.
Thank you very much for support
Edited by: remaï on Apr 1, 2009 4:08 PM

What version of oracle you have? CBO work is different in 9i and 10g.
Usually cost based optimizer do not want to use index for >< condition with binding variables because optimizer can not use statistic to determine selectivity, and by default selectivity of <> operators is low.
(As I remember '>' selectivity by default is 5%, you have two conditions > and <, therefore resulting selectivity will be 0.05*0.05=0.0025 as two independent events, but selectivity of other conditions
ORDER_MVTS.MVT_TYPE = 'DELIVERY' or ORDER.CUSTOMER_CODE = 'ADIDAS' looks much better for CBO)
The best solution I see is do not use binding variables. Actually your query looks as searching query, which executes not so often, therefore you will not have perfomance win along of skipping execution plan creation.
Edited by: JustasVred on Apr 1, 2009 10:10 AM

Using bind variable with IN clause

My application runs a limited number of straight up queries (no stored procs) using ODP.NET. For the most part, I'm able to use bind variables to help with query caching, etc... but I'm at a loss as to how to use bind variables with IN clauses. Basically, I'm looking for something like this:
int objectId = 123;
string[] listOfValues = { "a", "b", "c"};
OracleCommand command = new OracleCommand();
command.Connection = conn;
command.BindByName = true;
command.CommandText = @"select blah from mytable where objectId = :objectId and somevalue in (:listOfValues)";
command.Parameters.Add("objectId", objectId);
command.Parameters.Add("listOfValues", listOfValues);
I haven't had much luck yet using an array as a bind variable. Do I need to pass it in as a PL/SQL associative array? Cast the values to a TABLE?
Thanks,
Nick

Nevermind, found this
How to use OracleParameter whith the IN Operator of select statement
which contained this, which is a brilliant solution
http://oradim.blogspot.com/2007/12/dynamically-creating-variable-in-list.html

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String AM = "model.UnixCommandsAppMod";
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User,
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b). I'll relent and answer your new question. Ignore that INFO message. It is not an error. It will ALWAYS ALWAYS appear when you run your application in the embedded OC4J with JDeveloper. Had you searched the forum for "INFO: ADF Faces is running with time-stamp checking enabled" you would find that the first hit (among some others) has this same answer
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I've the following problem : I've some SQL queries stored in my DB as VARCHAR2 values.
I need to use DBMS_SQL in order to execute them.
In theese SQL statements I have some bind variables like :NUMORD. (ex. SELECT 'X' FROM YYYY WHERE FIELD_1 = :NUMORD).
I don't know "a priori" names and number of such variables.
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Tks
Tullio

I don't know "a priori" names and number of such variables.
Is there any way to have a list of such bind variables ?The names are probably not important, but you can get the count (and other useful information) like this:
SQL> var cur refcursor
SQL> declare
    cl clob;
begin
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PL/SQL procedure successfully completed.
SQL> print cur
CL
<QUERY>
<SELECT>
    <SELECT_LIST>
      <SELECT_LIST_ITEM>
        <COLUMN_REF>
          <SCHEMA>MICHAEL</SCHEMA>
          <TABLE>EMP</TABLE>
          <TABLE_ALIAS>E</TABLE_ALIAS>
          <COLUMN>DEPTNO</COLUMN>
        </COLUMN_REF>
      </SELECT_LIST_ITEM>
      <SELECT_LIST_ITEM>
        <BIND_VARIABLE>1</BIND_VARIABLE>
        <COLUMN_ALIAS>X</COLUMN_ALIAS>
      </SELECT_LIST_ITEM>
    </SELECT_LIST>
</SELECT>
<FROM>
    <FROM_ITEM>
      <SCHEMA>MICHAEL</SCHEMA>
      <TABLE>EMP</TABLE>
      <TABLE_ALIAS>E</TABLE_ALIAS>
    </FROM_ITEM>
</FROM>
<WHERE>
    <EQ>
      <COLUMN_REF>
        <SCHEMA>MICHAEL</SCHEMA>
        <TABLE>EMP</TABLE>
        <COLUMN>DEPTNO</COLUMN>
      </COLUMN_REF>
      <BIND_VARIABLE>2</BIND_VARIABLE>
    </EQ>
</WHERE>
</QUERY>
Count binds: 2
2 rows selected.

Simple Q about using a List in a bind variable

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