Yesterday I blogged about SQL SERVER – Creating Multiple Backup Copies. I got an amazing response to the blog post. Let us learn it today.
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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.
Internal Temporary Tables in MySQL: When a Query Spills to Disk
MySQL and MariaDB build internal temporary tables behind your back for GROUP BY, DISTINCT, UNION and derived tables. This post counts them with status counters, reads them in EXPLAIN, shows what pushes one to disk, and removes one with an index.
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