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.
MAX Columns Ever Existed in Table – SQL in Sixty Seconds #182
Earlier I wrote about SQL SERVER – MAX Columns ID Used in Table and lots of people asked me to create a video on this topic. Let us see the video.
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.
SQL SERVER – Stored Procedure Timing and Cached Measurements
SET STATISTICS TIME reports CPU and elapsed execution time for Stored Procedures. A customer wanted to measure a run without adding statements manually.
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.