You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
SQL User-Defined FunctionsSQL UDFs can be <strong>use</strong>d in computed columns, defaultscreate table t ( a int default dbo.MyFunc() )create default dft1 as dbo.MyFunc()create table t ( a int, b as dbo.MyFunc(a) materialized)create index ix1 on t ( dbo.MyFunc(a) )select * from twhere dbo.MyFunc(a) = 10NB: a materialized CPC better be deterministic, otherwise CPCs andfunction indexes are pointless…so a SQL UDF in a CPC should also be deterministic<strong>Sybase</strong> Symposium 2007 – November 15 - Brussels27
Change language