AT TIME ZONE twice converts UTC to local time in SQL Server. The first use labels a plain value as UTC and the second converts it. A demo shows the common one step mistake, stores in three cities, and the missing and repeated hours of daylight saving.
Multiple Backup Copies Stripped – SQL in Sixty Seconds #156
Yesterday I blogged about SQL SERVER – Creating Multiple Backup Copies. I got an amazing response to the blog post. Let us learn it today.
SQL SERVER – Creating Multiple Backup Files – Stripped
Multiple Backup Files can form one striped backup set. A customer wanted several files for a single database backup.
SQL SERVER – Availability Groups Can Propagate Database Compatibility Level
Propagation of Compatibility Level needs verification on the actual availability-group topology. I compare each replica through its own connection.
Escape Text for JSON: Build Valid JSON With STRING_ESCAPE
To escape text for JSON, pass each value through STRING_ESCAPE, so JSON built by hand stays valid. A demo shows which characters it escapes and which it leaves alone. It also shows when JSON_MODIFY and FOR JSON make it unnecessary.
Forwarded Records and Performance – SQL in Sixty Seconds #155
Forwarded records make SQL Server read extra pages when it scans a heap. In this SQL in Sixty Seconds video, I explain forwarded records and performance.
Which Tables Are Huge: Rows Versus Size in SQL Server
Rows versus size decides which tables are huge in SQL Server. One query reads sys.dm_db_partition_stats and ranks every table twice, by rows and by size. A demo shows 300 rows that outweigh 300,000 rows, and why the older join misleads.