A Trigger on Database scope can reject CREATE_TABLE events. A customer required this rule, though I preferred ordinary permissions.
Index a Computed Column in SQL Server
To index a computed column, define the formula once on the table and create a normal index on it. This post loads 200,000 rows, shows the scan, then the seek after the index, and tests the rules that decide whether SQL Server accepts the column.
Size and Rows of Each Table in SQL Server, Indexes Included
To list the size and rows of each table, add up the pages from sys.dm_db_partition_stats and split them into data, index and unused space. This post shows three traps in the common join query and checks the corrected result against sp_spaceused.
Free Space in Database Files: Check Data and Log Files
To see the free space in database files, compare each file’s size with the pages it uses. This post gives one query for data and log files, adds the free space on the drive, and checks the log figure against a second source.
SQL SERVER – Rename View
When I rename view objects, I inspect references and retained definitions first. SSMS and sp_rename both need dependency planning.
SQL SERVER – High Frequency Cached Query Counts and Statement Metrics
I measure High Frequency cached statements with decimal executions-per-second arithmetic. A customer wanted to identify the busiest queries.
MySQL Performance – Five Configuration Topics with Version Limits
A MySQL Config File needs settings matched to its server version and workload. I measure pressure before changing a parameter.