How to write the where clause

Hi ,
i needed to write a select query in which the search criteria is
a part of a string .
eg.
select * from DBTABLE where DESCRIPTION = 'abc'.
here abc is a part of any string.
Is the way of writing the select query correct,
If not what is the correct way?

>
Harshit Rungta wrote:
> Hi ,
>
> i needed to write a select query in which the search criteria is
> a part of a string .
>
> eg.
> select * from DBTABLE where DESCRIPTION = 'abc'.
>
>
>
> here abc is a part of any string.
>
> Is the way of writing the select query correct,
> If not what is the correct way?
Hi,
select * from dbtable into table i_dbtable where description = 'ABC'.
note : whenever you are checking a condition the string should be in capital letters within quotes.

Similar Messages

How to edit the where clause of View object in search example dynamically

Hi,
I am new to OA Framework. Can anybody please tell me how can I assign the where clause dynamically. I want to search only those rows whose creation date is between a 'Date form' and 'Date to' inputs from the search page
Thanks
Anupam

user567342 ,
I will advice u again pls refer dev guide, there u can find code sample for ur requirement, which can be accomplished using stringbuffer.
--Mukul

How to modify the where clause in this to include other things

How do I modify the WHERE clause in this code:
$expected = array(first_name, last_name, level, language, 'city', 'state', 'zip', );
$query_search = 'SELECT * FROM french;
$where = false;
foreach ($expected as $var) {
if (isset($_GET[$var]) && !empty($_GET[$var])) {
if ($where) {
$query_search .= ' AND ';
} else {
$query_search .= ' WHERE ';
$where = true;
$query_search .= $var . ' = '. GetSQLValueString($_GET[$var], 'text');
to include things like searching multiple columns and IF NULL:
SELECT * from MyTable where (MyCol1 = %s or MyCol1 Is Null) AND (MyCol2 = %s or MyCol2 Is Null)
Where on earth does it go?
Thanks
Brian

My goal is to have a search form and results combination that:
1) allows the user to ignore any of the page’s existing search fields that
they don’t need, (to search with empty form fields);
2) to use whichever search form fields they choose to use even if the
Registrant for whom they are searching did not insert that information when
they registered, (they are filled in the search form but empty in the
database table);
3) and to permit some of the seach fields to search multiple columns, for
example the search form field ‘sonsName’ would look for that information in
three different database table colums, (sonsName1, sonsName2 etc.).
You’ve given me code that permits 1) above to work beautifully. You’ve also
sent along code that should let me accomplish the other two, and though I’ve
been able to recreate below what I want the multiple search column to do, I
can get neither the multiple column nor the IS NULL sections to work in the
code you sent most recently.
How do I take something like this:
$colname_rsSearch = "-1";
if (isset($_POST['first_name_now'])) {
$colname_rsSearch = $_POST['first_name_now'];
$colname2_rsSearch = "-1";
if (isset($_POST['last_name_now'])) {
$colname2_rsSearch = $_POST['last_name_now'];
$colname3_rsSearch = "-1";
if (isset($_POST['sonsName'])) {
$colname3_rsSearch = $_POST['sonsName'];
mysql_select_db($database_connStr_Milo_db, $connStr_Milo_db);
$query_rsSearch = sprintf("SELECT milo.first_name_now, milo.last_name_now,
milo.ws_number, milo.ws_number_3, milo.ws_number_4 FROM milo WHERE
milo.first_name_now = %s AND milo.last_name_now = %s AND (milo.sonsName1 =
%s) || (milo.sonsName2 = %s) || (milo.sonsName3 = %s)",
GetSQLValueString($colname_rsSearch,
"text"),GetSQLValueString($colname2_rsSearch,
"text"),GetSQLValueString($colname3_rsSearch,
"text"),GetSQLValueString($colname3_rsSearch,
"text"),GetSQLValueString($colname3_rsSearch, "text"));
$rsSearch = mysql_query($query_rsSearch, $connStr_Milo_db) or
die(mysql_error());
$row_rsSearch = mysql_fetch_assoc($rsSearch);
$totalRows_rsSearch = mysql_num_rows($rsSearch);
?> (I’ve excluded the IS NULL part from my example, but need it in the final
version)
…and make it work using your code below (which permits someone to search
with empty form fields, but does not yet enlighten me on what to group (with
parenthesis) to make the code execute the multiple column search and the IS
NULL parts of the search.
mysql_select_db($database_connStr_Milo_db, $connStr_Milo_db);
$expected = array('first_name_now', 'last_name_now', sonsName'
$query_search = 'SELECT milo.first_name_now, milo.last_name_now,
milo.ws_number, milo.ws_number_3, milo.ws_number_4 FROM milo';
$where = false;
foreach ($expected as $var) {
if (isset($_POST[$var]) && !empty($_POST[$var])) {
    if ($where) {
      $query_search .= ' AND ';
    } else {
      $query_search .= ' WHERE ';
      $where = true;
$query_search .= '(' . $var . ' = '. GetSQLValueString($_POST[$var],
'text') .
' OR ' . $var . ' IS NULL)';
$search = mysql_query($query_search, $connStr_Milo_db) or
die(mysql_error());
$row_search = mysql_fetch_assoc($search);
$totalRows_search = mysql_num_rows($search);
As always, thank you.

How to retrieve the 'Where Clause' text?

Hello all,
I have created a package to retrieve all the DML's executed against the database for the day, for a particular user. DBMS_LOGMNR package was used to retrieve DMLs. But the DMLs retrieved have their 'WHERE' clause text converted to ROWID's. I need to find out the 'WHERE' clause with the parameters.
I tried retrieving values from the v$sql views, but that information is cryptic and very volatile.
Is there a way to retrieve the 'Where' clause? If not, is there a way to retrieve the 'WHERE' clause information using a trigger against the corresponding table.
I am desparately lookin'for a solution. Hope someone out there can help me out.
Regards,
Prabu Raghav.

Hi Andrew,
Thanks for the suggestion.
I am using Oracle 8i not 9i.FGA using DBMS_RLS let's me add policies and retrieve all other information about a user except the SQL statement that's executed by the user.
I want to retrieve the Current sql statement executed against the table by a particular user and record it.
Any suggestions?
Regards,
Prabu Raghav.

How to construct the where clause for a nested xml target file

Post Author: jlpete72
CA Forum: Data Integration
I'm having some problems getting the desired results creating a multi-level nested xml file. Specifically, it does not seem that the where clause in the child schemas respects values from parent schemas. I'm sure I'm constructing something incorrectly, but am running out of ideas.
I am working with the classic company/order/line hierarchy and there are three levels of output schemas in my target xml file, one for company, order header and order line information.
For testing, I have hardcoded a restriction at the order header line to deal with only one order. But unless I hardcode values into the where clause at the order line level of the schema, all values are returned for orders belonging to the company defined in the company level.
I'm trying a where clause at the order line level similar to:
order_line.customer = order_header.customer and order_line.order_num = order_header.order_num
If the customer has more than one order in the data file, then all orders for that customer are placed in the detail for the order header. Only if I hard code the order number in the where clause do I get only the lines for the order specified in the header section. Not very practical.
What am I missing?

An External Parsed Entity could be used to reference a schema.
In your DTD:
<!ENTITY datamodules SYSTEM "file:///c:/Datamodules/Datamodules.xsd">
Refer the external entity in xml document:
<datamodules>&datamodules;</datamodules>

How to set the where clause of a value set on the basis of a form field

I am using a DFF(Descriptive FlexField), which needs to display the value of a certain column(say columnA) on the basis of the value of another column(say columnB).
So i have created a value set which points to the table which has both these columns, and the DFF uses this value set. However, the problem is that I have not put any where clause in the value set, because of which i cannot handle the exact fetch returns more than one rows error.
The query has to be as follows:
select ColumnA from tbl where ColumnB = [ a form value ];
What I want to know is how can i get the value of a certain field of a certain block of the form in the above query.
Edited by: 981615 on Jan 14, 2013 12:48 AM
Edited by: 981615 on Jan 14, 2013 12:48 AM

Just have a look over these two statements if it solves your problem
one time where clause
Set_Block_Property('BLOCK_NAME',ONETIME_WHERE,your form item);
dynamic where clause
set_block_property('BLOCK_NAME'default_where, your form itme)
you can where clause at run time from any procedure or some triggers

VPD - How to make the where clause a correlated query

Hi,
My VPD function has the following where clause:
where_clause:= ' project_id in (select object_id from pa_project_classes p'||
' where p.class_category='||''''||l_cat||''''||
' and p.CLASS_CODE='||''''||l_class||''''||
' and p.OBJECT_TYPE=''PA_PROJECTS'''||
The problem is that the subquery is not using the unique key defined on the table pa_project_classes. What I need is something as follows:
where_clause:= ' project_id in (select object_id from pa_project_classes p'||
' where p.class_category='||''''||l_cat||''''||
' and p.CLASS_CODE='||''''||l_class||''''||
' and p.OBJECT_TYPE=''PA_PROJECTS'''||
' and p.object_id=mainquery.project_id ||
The problem is that since the table pa_project_classes also has a column project_id, I have to prefix the column name by the alias of the main query like 'mainquery.project_id'. However this seems impossible as main query is not unknown .
I would be grateful if you could suggest any workaround or solution.
Thanks

Just have a look over these two statements if it solves your problem
one time where clause
Set_Block_Property('BLOCK_NAME',ONETIME_WHERE,your form item);
dynamic where clause
set_block_property('BLOCK_NAME'default_where, your form itme)
you can where clause at run time from any procedure or some triggers

How to override the where clause (Bind Variables) in Backing Bean.

HI
I am using bind variables in VO and using exeutewithparam to pass the values to bind. Which is working fine.
But what i want now to override the values pro grammatically from backing_bean of that page.
How can i pass the values to bind variables from bean.
M Niaz.

Hi
Try this if it works. this is from 10g
1)create value binding in the backing bean on any action
FacesContext ctx=FacesContext.getCurrentInstance();
ValueBinding vb= ctx.getApplication().createValueBinding("#{bindings['account_name1'].inputValue}");
2) and then set the value for binding
vb.setValue(ctx,(String)accountInput.getValue());
Now execute the method with method binding and execute it
ctx.getApplication().createMethodBinding("#{bindings.ExecuteWithParams.execute}",null).invoke(ctx,null);
Regards
Rohit

How to change recordset bahaviour to accept dynamic column names in the where clause

Hi
im using php-mysql and i make a recordset and i want to make the column names in the where clause to be dynamic like
"select id,name from mytable where $tablename-$myvar";
but when i do this my i break the recordset and it disappear
and when i use variables from advanced recordset it only dynamic for the value of the column not for the column name
and when i write the column name to dynamic as above by hand it truns a red exclamation mark on the server behaviour panel
so i think the only way is to change the recordset behaviour is it? if so How to make it accept dynamic column names?
thanks in advance.

As bregent has already explained to you, customizing the recordset code will result in Dreamweaver no longer recognizing the server behavior. This isn't a problem, but it does mean that you need to lay out your dynamic text with the Bindings panel before making any changes. Once you have changed the recordset code, the Bindings panel will no longer recognize the recordset fields.
Using a variable to choose a column name is quite simple, but you need to take some security measures to ensure that the value passed through the query string isn't attempting SQL injection. An effective way of doing this is to create an array of acceptable column names, and check that the value matches.
// create array of acceptable values
$valid = array('column_name1', 'column_name2', 'column_name3');
// if the query string contains an acceptable column name, use it
if (isset($_GET['colname']) && in_array($_GET['colname'], $valid)) {
$col = $GET['colname'];
} else {
// set a default value if the submitted one was invalid
$col = 'column_name1'
You can then use $col directly in the SQL query.

Re: [iPlanet-JATO] How to make an OR in the WHERE clause of a SELECT

Harry,
If you get a reference to your model, you can set the
whereClauseOverride with exactly the string you want to use. Keep in
mind that you are dealing with a the raw SQL where clause, therefore,
you must use the actual table column names and not the model's logical
field names as they could be different.
QueryModelBase queryModel = (QueryModelBase)getModel(PersonModel.class);
// you must add the "WHERE" as well
String whereClause = "WHERE firstName LIKE '%max' OR lastName LIKE '%max%'";
queryModel.setWhereClauseOverride(whereClause);
Keep in mind that this will override all where criteria: static and
dynamic where criteria. Static criteria can be declared in your model
class: setStaticWhereCriteriaString(STATIC_WHERE_CRITERIA).
You could optionally get the entire SQL statement and replace the
__WHERE__ token yourself with a string replace technique. In fact, if
you want to add an ORDER BY, you will need to get the SQL and append to
the end.
queryModel.getSelectSQL();
Hope this helps. Let me know if you have any questions
craig
hlamer wrote:
Hi,
if I add criterias to my model
with "SelectQueryModel.addUserWhereCriterion()" they will be concated
with AND.
How can I add a criteria with OR?
I want something like:
SELECT personId, firstName, lastName
FROM Person
WHERE firstName LIKE "%max"
OR lastName LIKE "%max%"
Thanks.
Harry
For more information about JATO, including download information, please visit:
http://developer.iplanet.com/tech/appserver/framework/index.jsp

Rewritten your query wuth tags as well
{code}select "P_CIRCUITS_FIBER"."PORTS_1",
        "P_CIRCUITS_FIBER"."PORTS_2",
        CASE WHEN CPORT.ID = (select REGEXP_SUBSTR(ports_1,'[^,]+',1,1) from p_circuits_fiber)
             THEN "CPORT"."PORT_NO" END PORT_NO_1,
        CASE WHEN CPORT.ID = (select REGEXP_SUBSTR(ports_2,'[^,]+',1,1) from p_circuits_fiber)
             THEN "CPORT"."PORT_NO" END PORT_NO_2
from    "CPORT",
        "P_CIRCUITS_FIBER"
where   p_circuits_fiber.fiber_id = :P4000_CIRCUIT_NO
and     (select REGEXP_SUBSTR(ports_1,'[^,]+',1,1) from p_circuits_fiber) = "CPORT"."PORT_NO" "PORT_NO_1"
and     (select REGEXP_SUBSTR(ports_2,'[^,]+',1,1) from p_circuits_fiber) = "CPORT"."PORT_NO" "PORT_NO_2"{code}
Now we can see two columns references which should not be there.
I even not sure to understand why those two conditions are in the WHERE clause. But for sure, CPORT.ID cannot be equal to two values unless they are same.
Is there only one row in p_circuits_fiber ?
Nicolas.

How do I modify the WHERE clause in my SQL query?

This seems like such a straight-forward part of the report design, but I'm fairly new to Crystal Reports and I only have experience with modifying reports someone else has already written. In this particular case, I just need to modify the WHERE clause of the SQL query. I can select Show SQL Query and see what statement is being used to select data, but I can't find where to modify it since it's grayed out. I see how to change the selection criteria, parameters, grouping, etc...just not the WHERE clause. The report is linked to a database used for reporting with a table created and populated by a stored procedure. I don't need to modify the stored procedure because the data I want to filter by is currently in the table--I just don't know how to filter by what I need. Here's part of the query:
SELECT "rpt_dist"."startdate", "rpt_dist"."transtype", "rpt_dist"."laborcode", "rpt_dist"."crewid", "rpt_dist"."regularhrs" FROM "Reporting"."dbo"."rpt_dist" "rpt_dist"
WHERE (rpt_dist."transtype" <> 'WORK' AND rpt_dist."transtype" <> 'WMATL') AND rpt_dist."laborcode" LIKE 'S%' AND (rpt_dist."crewid" = 'HOUS' OR rpt_dist."crewid" = 'HOUS2' ...
I would like to add another crewid to the WHERE clause. Thanks for any input.

1.Open the report in the crystal designer
2.Go to the field explorer(if hidden go to view menu->field explorer)
3.Rt. click on the database fields->choose database expert
4.Now you will see 2 columns-Available DataSource and Selected Tables
5.Rt. click on the object(ex.command) available in the Selected Tables column->Choose Edit command
6.A new Modify Command window will appear,here you can edit your SQL Query
I get to step 4 and I see the two columns including my database and the report table, but there is no command object available. If I right-click on my table, I can just view the Properties. ??
As for the other tip to modify the record selection: I don't see anywhere the other crewid values are set and if I add the one I'm missing, it doesn't modify the existing SQL Query and when I preview the report it throws off the results so that no data displays??
I'm using Crystal Reports 11.5 if that makes a difference. Thanks again.

JSP, DataWebBean: How to dynamically set the where clause of query and display record

Hi,
I am reposting this question as per suggestions made by Mr. Dwight.
I have used ViewCurrentRecord web bean to display records from EMP table. I have to use the Dept_Id_FK from the current
record of the EMP table to display corresponding records of Dept table. I have a view object called DeptView in my Business
Components which selects all the records from the Dept table.
How do I get the value of Dept_Id_FK and use it to display the required records of the Dept table?
I tried to declare a variable and get the value of Dept_Id_FK but it did not work. My code is as follows:
<%! String m_DeptId = null; %>
<jsp:useBean id="RowViewer" class="oracle.jbo.html.databeans.ViewCurrentRecord" scope="request">
<%
RowViewer.initialize(pageContext, "EMPApp_EMP_EMPAppModule.EMPView1");
RowViewer.setReleaseApplicationResources(false);
RowViewer.getRowSet().next();
m_DeptId = (String)RowViewer.getRowSet().getCurrentRow().getAttribute("DeptIdFk");
%>
</jsp:useBean>
Thanks.
null

First of all, Thank you very much for making use of the new topic format. It is very much appreciated.
As for your question, I think there are several different ways to accomplish what I think you want to do.
1. Create a view object that includes both Emp and Dept entities and join them there. In this case, your query would look something like this:
Select e.empno,e.name,...,d.dname,d.loc from emp e, dept d
where e.deptno = d.deptno
You should be able to create a JSP off of this view object that contains both the employee and department information. In this case, BC4J takes care of the foreign key to primary key coordination.
2. In order to set a dynamic where clause for a view, you need to do the following in your usebean tag:
rsn.initialize(application,session, request,response,out,"DeptView");
rsn.getRowSet().getViewObject().setWhereClause("deptno=" | | m_DeptId);
rsn.getRowSet().getViewObject().executeQuery();
rsn.getRowSet().first();
You will need to do this in a separate usebean tag from the EmpView, since the usebean can only initialize one view object.
In other words, you would have your ViewCurrentRecord bean tag for the EmpView, then a separate one for the DeptView where you use the above code to set the where clause to display just the information for the department you want.
Another option, but one I'm not sure would work as well, is to create a master-detail JSP to do this for you. Usually a master-detail is a one-to-many (one department to many employees). Your request appears to be the reverse, but might still be doable using the same mechanism.
You set up relationships between views in your BC4J project using View Links. If you used the BC4J project wizard and created default views, some of these links may have been created for you. They are created when BC4J detects a foreign key to primary key relationship in the database.
You can create your own View Links using the View Link wizard. Select your BC4J project node and choose Create View Link... from the context menu. You will be asked to select a source view (Emp), and a target view (Dept), then select the attribute in each view that related the two of them (deptno).
Next, you need to reflect this new relationship setting in your application module. Select your app module and choose Edit from the context menu. On the data model page, select the EmpView node in the Selected list. Now select the DeptView node in the available list and shuttle it over. You should see DeptView1 via yourlink appear indented under the EmpView node. Save and rebuild your BC4J project to reflect the changes.
In your JSP project, you can now have the wizard create a master-detail form for you based on DeptView1.
Let me know if the above answers your question, or if I have misunderstood what it is you wanted to do.
null

How to dynamically build where clause in Linq

Hello everyone,
Oracle DB:11gR2
Oracle Client: 11.2.0.3.0 (ODP.NET)
Oracle Developer Tools for Visual Studio
VS 2010 (C#)
In a Windows Form, we need to query the data based on the values of dropdown listboxes, which user will select.
Let's say, two combox, one is for Department and one is for Salary
Department:
-1 All
10 Department 1
20 Department 2
30 Department 3
Salary:
-1 All
1 < 20000
2 20000 to 50000
3 50000 to 100000
4 > 100000
Here is C# code to query data:
using (var myEDMctx = new HREntities())
var LINQrslt = from emp in myEDMctx.EMPLOYEES
select emp;
The default values for both combox should be All.
How to write the dynamic where clause for this LINQ?
Thanks in advance!!!

There is nothing Oracle-specific about dynamic LINQ queries. Dynamic LINQ queries are handled all the same way, no matter which data source you use. Microsoft describes how to use Dynamic LINQ here:
http://weblogs.asp.net/scottgu/archive/2008/01/07/dynamic-linq-part-1-using-the-linq-dynamic-query-library.aspx
http://weblogs.asp.net/davidfowler/archive/2010/08/19/dynamic-linq-part-2-evolution.aspx

Query in the where clause is not allowed

Hi all,
I have a table m_vehicle that stores 1 or more than 1 rows of data for each person. But the partner's schema requires that 0 or 1 vehicle license plate data be sent with the xml file. I have the following nested select statement inside a bigger one and it does not work,
select xmlelement("VehicleLicensePlate",
     (case when mv.lic_plate_state is not null then
          xmlelement("PlateState", mv.lic_plate_state)
     end), -- end of plate state
     (case when mv.lic_plate_no is not null then
          xmlelement("PlateNumber", xmlelement("ID", mv.lic_plate_no))
     end),
     (case when mv.lic_plate_year is not null then
          xmlelement("PlateExpiryYear", mv.lic_plate_year)
     end)
     ).extract('/*')
from m_vehicle mv where mv.mni_id = 1083650
and mv.seq_no = (select max(mv2.seq_no) from m_vehicle mv2
where mv2.mni_id = mv.mni_id) and mv.lic_plate_no is not null
But it works when I run it alone and gets the latest row for the person. It does not work either if I join this table with other tables. My root element select is from dual because I have to supply lots of SOAP and other artifacts in the xml. Is it because I have this root select from dual that the query in the where clause does not work? How do I make it work so that I get 0 or one row only from the table? My solution was to write a function that returns each part of the license plate data using dymanic sql and call it in the xmlelement function. It works but I would like to use plain sql instead.
Thanks.
Ben

By the way, the error I get is this,
ERROR:
ORA-31011: XML parsing failed
ORA-19202: Error occurred in XML processing
LPX-00216: invalid character 3 (0x3)
Error at line 1
ORA-06512: at "SYS.XMLTYPE", line 111
Ben

Function-based index with OR in the wher-clause

We have some problems with functin-based indexes and
the or-condition in a where-clause.
--We use Oracle 8i (8.1.7)
create table TPERSON(ID number(10),NAME varchar2(20),...);
create index I_NORMAL_TPERSON_NAME on TPERSON(NAME);
create index I_FUNCTION_TPERSON_NAME on TPERSON(UPPER(NAME));
The following two statements run very fast on a large table
and the execution-plan asure the usage of the indexes
(-while the session is appropriate configured and the table is analyzed):
1)     select count(ID) FROM TPERSON where upper(NAME) like 'MIL%';
2)     select count(ID) from TPERSON where NAME like 'Mil%' or (3=5);
In particular we see that a normal index is used while the where-clause contains
an OR-CONDITION.
But if we try the similarly select-statement
3)     select count(ID) FROM TPERSON where upper(NAME) like 'MIL%' or (3=5);
the CBO will not use the function-index I_FUNCTION_TPERSON_NAME and we have a full table scan in the execution-plan.
(This behavior we only expect with views but not with indexes.)
We ask for an advice like a hint, which enable the CBO-usage
of function-based indexes in connection with OR.
This problem seems to be artificial because it contains this dummy logic:
     or (3=5).
This steams from an prepared statement, where this kind of boolean
flag reduce the amount of different select-statements needed for
covering the hole business-logic, while using bind-variables for the
concrete query-parameters.
A more realistic (still boild down) version of our select-statement is:
select * FROM TPERSON
where (upper(NAME) like 'MIL%' or (NAME is null))
and (upper(FIRSTNAME) like 'MICH% or (FIRSTNAME is null))
and ...;
thank you for time..
email: [email protected]

In the realistic statement you write :
select * FROM TPERSON
where (upper(NAME) like 'MIL%' or (NAME is null))
and (upper(FIRSTNAME) like 'MICH% or (FIRSTNAME is null))
and ...;
as far as i know, NULL values are not indexed, "or (NAME is NULL)" have to generate a full table scan.
HTH
We have some problems with functin-based indexes and
the or-condition in a where-clause.
--We use Oracle 8i (8.1.7)
create table TPERSON(ID number(10),NAME varchar2(20),...);
create index I_NORMAL_TPERSON_NAME on TPERSON(NAME);
create index I_FUNCTION_TPERSON_NAME on TPERSON(UPPER(NAME));
The following two statements run very fast on a large table
and the execution-plan asure the usage of the indexes
(-while the session is appropriate configured and the table is analyzed):
1)     select count(ID) FROM TPERSON where upper(NAME) like 'MIL%';
2)     select count(ID) from TPERSON where NAME like 'Mil%' or (3=5);
In particular we see that a normal index is used while the where-clause contains
an OR-CONDITION.
But if we try the similarly select-statement
3)     select count(ID) FROM TPERSON where upper(NAME) like 'MIL%' or (3=5);
the CBO will not use the function-index I_FUNCTION_TPERSON_NAME and we have a full table scan in the execution-plan.
(This behavior we only expect with views but not with indexes.)
We ask for an advice like a hint, which enable the CBO-usage
of function-based indexes in connection with OR.
This problem seems to be artificial because it contains this dummy logic:
     or (3=5).
This steams from an prepared statement, where this kind of boolean
flag reduce the amount of different select-statements needed for
covering the hole business-logic, while using bind-variables for the
concrete query-parameters.
A more realistic (still boild down) version of our select-statement is:
select * FROM TPERSON
where (upper(NAME) like 'MIL%' or (NAME is null))
and (upper(FIRSTNAME) like 'MICH% or (FIRSTNAME is null))
and ...;
thank you for time..
email: [email protected]

How to write the where clause

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