Use schema discovery on JSON columns to count keys and types, inspect nested objects, and find missing required paths with guarded input.
Twenty Practice Queries on One Small Schema
Work through twenty practice queries on one small sales schema, with expected results for filters, joins, totals, windows, and gaps.
Query for CPU Pressure: Sample the Scheduler Queue
To sample the scheduler queue, read the runnable counts of every scheduler eight times, one second apart, and compare the result with a baseline. This post shows the queue on a quiet server and again while more busy sessions than schedulers run. It reads the spread, the streak and the average that tell pressure from noise.
Canceled Query Plan: Three Ways to Capture It in SQL Server
A canceled query plan can be captured with Live Query Statistics, with a live plan query while the statement runs, or from Query Store after the cancel. This post runs a long query, reads its plan while it runs, cancels it and then reads the aborted run from Query Store. It also explains which plan each method returns.
SQL SERVER – Fix: Configuration Manager- Cannot Connect to WMI Provider. You Do Not Have Permission or The Server is Unreachable
Let us learn how to solve Configuration Manager – Cannot Connect to WMI Provider. You Do Not Have Permission or The Server is Unreachable.
Disable Query Store on an Always On Database: What Blocks It
To disable Query Store on an Always On database, run ALTER DATABASE with QUERY_STORE = OFF, and try OFF (FORCED) when the statement waits. This post shows the states to read, the background commands that block the statement and the steps used on an Always On database. It marks which parts were tested on a single server and which come from a client case.
How to Check Database Performance Facets in SQL Server? – Interview Question of the Week #270
Question: How to Check Database Performance Facets in SQL Server?
It is very simple to find out the facets of SQL Server Just follow the diagrams listed.