How to query for a NULL value?

Hi all,
how can I query for a NULL value in a ViewObject. I tried to set null as where-clause param [setWhereClauseParam(0, null)]. But the created statement looks like this:
SELECT ...
FROM ...
WHERE param = null
I would expect it to create something like WHERE param IS NULL. I hope anybody has a solution for this.
Thanks,
Axel

I think you should use setWhereClause("COL_NAME IS NULL")
You could use setWhereClauseParam(0, "NULL"), but only if you have a predefined query similar to: "SELECT X, Y, Z FROM A WHERE X IS :0" (which is a pretty useless query, as you can ONLY set "NULL" as the value for ":0").

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I've another question. I'm going to set single values for parameter fields.
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Best regards,
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How can I avoid the null values in cross tab?

How can I avoid the null values in cross tab?

Hello Anindita,
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How to eliminate # for empty date value in BEx Analyser

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Hi
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END;
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ANALYZE TABLE T1 COMPUTE STATISTICS
     FOR TABLE
     FOR ALL INDEXES
     FOR ALL INDEXED COLUMNS
SET AUTOTRACE TRACEONLY
SELECT
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Statistics
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          0 db block gets
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BUT
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Execution Plan
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Statistics
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          0 db block gets
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Message was edited by:
dongzky
Message was edited by:
dongzky

Just a teeny tweek
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hi experts,
my version is oracledb10g:
i h'd simple doubts.
for eg:
create table ex1( e varchar2(20));
insert into ex1 (null).
insert into ex1(e)
count will be: 2
i can easily found out the value 'e'.
so my question is:
how can i found out the null values in the table and i want to delete the null values from the table.

ADF 7 wrote:
hi experts,
my version is oracledb10g:
i h'd simple doubts.
for eg:
create table ex1( e varchar2(20));
insert into ex1 (null).
insert into ex1(e)
count will be: 2That depends what you count. If you issue count(*) you are asking Oracle "how many rows are there". If you issue a count(<column_name>) you are asking Oracle "how many not null values of <column_name> are there".
ADF 7 wrote:
i can easily found out the value 'e'.
so my question is:
how can i found out the null values in the table and i want to delete the null values from the table.
delete from <table_name>
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How to query for a NULL value?

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