SQL Select question: Find character in a string

given a cell in column TOPIC, how do I write a select where the X position of a character in a cell results in a 1?  The cell is in nvarchar and always contains a string of 1's and zeroes

For example, consider a row of data:
TOPIC:  10110000110011101
TITLE:   MyTitle
NAME:  MyName

Select NAME from DBO.Workshops where Title = 'MyTitle' AND <the 4th character of TOPIC = '1'>

How do I write the part
'the 4th character of TOPIC = '1'
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Here you go
Select NAME from DBO.Workshops where Title = 'MyTitle' 
and substring(topic,4,1)='1'

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try this
append this with the where condition

and substring(Topic, 4, 1) = '1'

for a generalized way of writitng it, pass teh position as parameter to teh query
substring(Topic, n, 1)
where 'n' is the postion you wnat to know the value of ?
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Microsoft SQL Server 2005

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