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  3. January 2009

Re: Adding columns conditionally using SQL

Rob Berendt wrote:

CREATE PROCEDURE ROB.NEWFIELD
LANGUAGE SQL
BEGIN

DECLARE SQLSTMT CHAR (200) DEFAULT
'ALTER TABLE ROB.AAAKEY ADD DUH CHAR (10)';

IF NOT EXISTS (
SELECT * FROM QSYS2.SYSCOLUMNS SC WHERE SC.TABLE_NAME =
'AAAKEY' AND
SC.COLUMN_NAME = 'DUH')
THEN
EXECUTE IMMEDIATE SQLSTMT;
END IF;

END

Thanks so much, Rob, that did it. I didn't know about the 'execute
immediate' statement.

Thanks also to Colin and anyone else who might have made suggestions
that I missed while our corporate scanning service was blocking the
digest because of 'long words'. A virus scanner _and_ a literary
critic? Remarkable!

Cheers,

Martin.


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