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Databases and SQL · 30 lessons · up to 10 minutes each
Query Tuning and Indexing
A planned performance path that measures queries before and after changes.
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Query Tuning and Indexing
Permanent access to the lessons published in this track when you buy. Future lessons are not included. 0 of 30 lessons are published; 0 are in owner review and 30 are Coming Soon.
$29.0030 lessons still in progress
Beginner
Lessons 1–10
01 Query Tuning and Indexing: Sketch query plan reading
Topic: query plan reading
Draw a small map of query plan reading in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Beginner4 minComing Soon02 Query Tuning and Indexing: Name the parts of selectivity and cardinality
Topic: selectivity and cardinality
Label the main pieces in selectivity and cardinality in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Beginner5 minComing Soon03 Query Tuning and Indexing: Trace an example of composite index order
Topic: composite index order
Follow one input through composite index order in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Beginner6 minComing Soon04 Query Tuning and Indexing: Compare choices for covering indexes
Topic: covering indexes
Write down one practical difference between covering indexes in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Beginner7 minComing Soon05 Query Tuning and Indexing: Find the boundary in statistics freshness
Topic: statistics freshness
Mark where statistics freshness in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Beginner8 minComing Soon06 Query Tuning and Indexing: Inspect an example of sargable predicates
Topic: sargable predicates
Annotate a minimal example of sargable predicates in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Beginner9 minComing Soon07 Query Tuning and Indexing: Connect join strategy clues to a neighboring concept
Topic: join strategy clues
Show how join strategy clues in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Beginner10 minComing Soon08 Query Tuning and Indexing: Spot a failure mode in slow query measurement
Topic: slow query measurement
Describe one likely failure for slow query measurement in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Beginner3 minComing Soon09 Query Tuning and Indexing: Read an official example of write cost of indexes
Topic: write cost of indexes
Summarize an official example of write cost of indexes in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Beginner5 minComing Soon10 Query Tuning and Indexing: Choose a use case for before and after verification
Topic: before and after verification
Match one small use case to before and after verification in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Beginner6 minComing Soon
Intermediate
Lessons 11–20
11 Query Tuning and Indexing: Build an example with query plan reading
Topic: query plan reading
Create a small working example that uses query plan reading in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Intermediate4 minComing Soon12 Query Tuning and Indexing: Compose selectivity and cardinality with another component
Topic: selectivity and cardinality
Combine selectivity and cardinality in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Intermediate5 minComing Soon13 Query Tuning and Indexing: Configure composite index order for a small case
Topic: composite index order
Set up composite index order in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Intermediate6 minComing Soon14 Query Tuning and Indexing: Validate inputs around covering indexes
Topic: covering indexes
Add a check around covering indexes in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Intermediate7 minComing Soon15 Query Tuning and Indexing: Use statistics freshness in a short workflow
Topic: statistics freshness
Add statistics freshness in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Intermediate8 minComing Soon16 Query Tuning and Indexing: Refactor sargable predicates into a reusable unit
Topic: sargable predicates
Extract sargable predicates in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Intermediate9 minComing Soon17 Query Tuning and Indexing: Exercise join strategy clues with sample data
Topic: join strategy clues
Run sample data through join strategy clues in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Intermediate10 minComing Soon18 Query Tuning and Indexing: Observe slow query measurement outputs
Topic: slow query measurement
Capture the result of slow query measurement in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Intermediate3 minComing Soon19 Query Tuning and Indexing: Recover from a write cost of indexes failure
Topic: write cost of indexes
Handle one expected failure from write cost of indexes in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Intermediate5 minComing Soon20 Query Tuning and Indexing: Document before and after verification behavior
Topic: before and after verification
Write a short usage note for before and after verification in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Intermediate6 minComing Soon
Advanced
Lessons 21–30
21 Query Tuning and Indexing: Test a boundary around query plan reading
Topic: query plan reading
Add an edge-case test for query plan reading in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Advanced4 minComing Soon22 Query Tuning and Indexing: Harden selectivity and cardinality
Topic: selectivity and cardinality
Add the relevant access, safety, or validation control to selectivity and cardinality in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Advanced5 minComing Soon23 Query Tuning and Indexing: Measure composite index order
Topic: composite index order
Record a small baseline for composite index order in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Advanced6 minComing Soon24 Query Tuning and Indexing: Reduce cost in covering indexes
Topic: covering indexes
Change one measurable cost in covering indexes in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Advanced7 minComing Soon25 Query Tuning and Indexing: Diagnose a statistics freshness failure
Topic: statistics freshness
Use an observable signal to explain a failure in statistics freshness in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Advanced8 minComing Soon26 Query Tuning and Indexing: Make sargable predicates repeatable
Topic: sargable predicates
Show that rerunning sargable predicates in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Advanced9 minComing Soon27 Query Tuning and Indexing: Review trade-offs in join strategy clues
Topic: join strategy clues
Compare two documented approaches to join strategy clues in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Advanced10 minComing Soon28 Query Tuning and Indexing: Improve slow query measurement maintainability
Topic: slow query measurement
Refine slow query measurement in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Advanced3 minComing Soon29 Query Tuning and Indexing: Verify write cost of indexes end to end
Topic: write cost of indexes
Check that a complete small flow using write cost of indexes in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Advanced5 minComing Soon30 Query Tuning and Indexing: Audit before and after verification against its source docs
Topic: before and after verification
Check the implementation of before and after verification in the context of query plans, selectivity, indexes, and measurement; save a short example or check that demonstrates the result.
Advanced6 minComing Soon
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