Transaction log growth during BACKUP

April 10, 2017 Andy 1

Over on Stack Exchange, someone asked why their transaction log was growing very fast during a full backup. An interesting tidbit to this question is that the database is in SIMPLE recovery — so the log should stay tiny, right? Wrong. While taking a full backup of … [Read More]

Nonclustered index storage on clustered columnstore

January 6, 2017 Andy 0

Question In SQL Server, a non-unique nonclustered index on a rowstore table incorporates the base object’s bookmark (RID or clustering key) at all levels of the nonclustered index structure. The bookmark is stored as part of the nonclustered index key at all index levels. On … [Read More]