If you see an index in the output with a name similar to WA_SYS% it's a pseudo-index, generated by SQL Server automatically*_WA_Sys_* indexes in SysIndexes
mssql.meetholland.com/message/100407.aspx Use of System Tables
www.harpertech.net/bus-ss/ cis/280/jkiener/system-tables-usage.htm
mssql.meetholland.com/message/100407.aspx Use of System Tables
www.harpertech.net/bus-ss/ cis/280/jkiener/system-tables-usage.htm
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