Check optimized plan forcing in SQL Server 2022 through scoped configuration and Query Store replay flags, then compare compile duration.
Table Partitioning Quiz: When Does It Make a Query Faster?
This Table Partitioning Quiz asks whether a query for last month runs faster once a sales table is partitioned by month. The answer is only when the filter lets SQL Server skip partitions. A tested script shows the partition count, the reads, and a partition SWITCH.
Query Store Quiz: Where Is Last Week’s Slow Query?
This Query Store Quiz starts with a slow query from last week and a plan cache that restarted empty. The answer is Query Store, which keeps plans and run times inside the database. A tested T-SQL script finds the query, its plan and its duration.
Reclaiming Space Quiz: Does Deleting Rows Shrink the File?
This Reclaiming Space Quiz asks what happens to the data file after you delete half the rows of a big table. The file keeps its size, and the space stays free inside it. A tested script shows the numbers, then what a shrink costs.
Fill Factor Quiz: Is 0 Different from 100?
This Fill Factor Quiz asks whether an index with fill factor 0 leaves more free space than one with 100. It does not: both build full pages. A tested script shows how a fill factor of 70 changes the pages and why it only applies at build time.
Accelerated Database Recovery Quiz: Why Did the Rollback Finish at Once?
This Accelerated Database Recovery Quiz asks how long a rollback takes when ADR is on. The answer is almost no time, and a tested script measures the same rollback with ADR off and on. It also shows what ADR costs.
Rebuild Index Quiz: DROP and CREATE, DROP_EXISTING or REBUILD?
This Rebuild Index Quiz asks which way of refreshing an index stays usable and can pause and resume. The answer is ALTER INDEX with ONLINE and RESUMABLE turned on. A tested two-window script shows the pause and the resume.