Re: ORA-01405: fetched column value is NULL
From: Charles Wolfe <cwolfe_at_popd.ix.netcom.com>
Date: 1996/08/21
Message-ID: <321BB00D.30D8_at_popd.ix.netcom.com>#1/1
Date: 1996/08/21
Message-ID: <321BB00D.30D8_at_popd.ix.netcom.com>#1/1
Benjamin,
You don't mention what language your programs are written in (so, I'll assume it's C).
There are 3 fairly straightforward approaches for dealing with the situation you describe.
- The easiest -- set the parameter DBMS in your proc.mk file to DBMS=v6. Then no error is returned for NULL column fetches without indicator variables.
- In the SELECT statement when you define your cursor use the NVL function to specify a non-null default value for null fetches:
EXEC SQL DECLARE mycursor CURSOR FOR SELECT column1, NVL(column2,0.0) FROM table...
3. Use indicator variables to test for null column fetches:
e.g. char namevar[50]; float salary_var; short salind; EXEC SQL DECLARE emp_cursor CURSOR FOR SELECT name, salary FROM emp... . . . EXEC SQL OPEN emp_cursor; EXEC SQL FETCH emp_cursor INTO :namevar, :salary_var:salind; if (salind == -1) salary_var = 5000.00; and so on...
hope this helps,
regards
Chuck
--Received on Wed Aug 21 1996 - 00:00:00 CEST
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