1. You shouldn't use INLIST in a query. Use IN operator instead. I don't think it has the same limitation as INLIST() function in VFP.
I don't think there is a limit ON IN list in SQL Server.

2. Yes IN operator can be optimized by SQL Server QP.

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>Using SPT from VFP 9 I need to retrieve a bunch of records from a table in SQL Server. The know information is a key field values for each of the records. So I am thinking of building an expressing that will use INLIST() as following:
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>

>cSqlCommand = "select * from mytable where
>inlist( keyfldname, 'val1', 'val2', 'val3 )"
>

>
>I have 2 questions:
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>1. VFP help says that the number of INLIST expressions can be up to 25. Is this the same in SQL Server?
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>2. In VFP INLIST() is Rushmore optimized. Is this the same in SQL Server (if index on KEYFLDNAME exist)?
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>Thank you in advance for your help.