troubleshooting Question

can lot of CASTs/Union or ISNULL possibly cause blocks?

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25112 asked on
Microsoft SQL Server 2008SQL
7 Comments3 Solutions130 ViewsLast Modified:
This query runs fine every day scheduled.. but yesterday, it was blocked by itself in sysprocesses.. when I did select * from master..sysprocesses where blocked<>0 I saw 12 lines all for this one process running this, and all with same spid and same blocked column data.

is it because of excessive UNION/CAST etc. CAn you suggest?
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