While preparing for my SQL Saturday Salt Lake City presentation, Climbing the B-Tree, I ran into one of the “word of mouth” facts that the first column of an index should be highly selective, i.e., it should only point to one or a few rows. This is not always the case and I’ll show you […]
2020-09-16
2,358 reads
2020-07-10
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Today Kendra talks about two of the online options used when working with indexes.
2020-01-14
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2019-12-16
829 reads
2019-12-09
1,143 reads
2019-10-15
766 reads
Learn how the INCLUDE phrase of an index can change the performance of a query.
2019-10-10
10,839 reads
2019-10-08
703 reads
2019-10-01
830 reads
Learn about the advantages and disadvantages of using INCLUDE columns in your index.
2021-04-30 (first published: 2019-09-17)
10,795 reads
By Steve Jones
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