2020-09-22
900 reads
2020-09-22
900 reads
2018-03-27
1,336 reads
2017-12-12
1,087 reads
2016-03-24
1,701 reads
It sometimes pays to go back and look at what you think you already know about SQL. Joe Celko gives a quick revision of the GROUP BY and HAVING clauses in SQL that are the bedrock of any sort of analysis of data, and comes up with some nuggets that may not be entirely obvious.
2016-03-08
6,672 reads
Greg Larsen discusses the ROLLUP, CUBE and GROUPING SETS operators. These operators are used with the GROUP BY clause and allow you to create subtotals, grand totals and superset of subtotals. Read on to find out more about these additional GROUP BY operators.
2015-03-18
11,340 reads
SQL Server’s GROUP BY clause provides you a way to aggregate your SQL Server data and to group data on a single column, multiple columns, or even expressions. Greg Larsen discusses how to use the GROUP by clause to summarize your data.
2015-02-11
12,133 reads
Concatenate columns grouping on Index column (approach for summing varchar columns by grouping on index)
2016-05-12 (first published: 2009-09-13)
1,553 reads
I was sick of changing context in Azure Data Studio while cleaning up things...
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In SQL Server, when the buffer manager write pages to disk, page protection is added to the pages. There are two types of protection: torn page protection and checksum page protection. What happens with regards to concurrency with page protection during writes?
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