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How to implement if-then-else in a select clause in Sybase
declare @val char(20)
select @val = 'grand'
select case when @val = 'small' then
'petit'
else
'grand'
end
However, quite a number of people are still using pre-11.5 implementations, including those people using the free 11.0.3.3 Linux release. In that case you can use the following recipe.
To implement the following condition in a select clause:
if @val = 'small' then
print 'petit'
else
print 'grand'
fi
in versions of ASE prior to 11.5 do the following:
select isnull(substring('petit', charindex('small', @val), 255), 'grand')
To test it out, try this:
declare @val char(20)
select @val = 'grand'
select isnull(substring('petit', charindex('small', @val), 255), 'grand')
This code is not readily understandable by most programmers, so remember to comment it well.
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