http://searchvb.techtarget.com/tip/1,289483,sid8_gci801573,00.html?bucket=ETAIf you see an index in the output with a name similar to WA_SYS% it's a pseudo-index, generated by SQL Server automatically. So don't spend hours searching for that index in the actual table. SQL Server automatically generates and maintains pseudo-indexes on frequently accessed columns to optimize the performance.
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