seniorSQL
What are deadlocks in SQL?
Updated May 17, 2026
Short answer
Deadlocks occur when transactions block each other.
Deep explanation
Two or more transactions wait indefinitely for locks held by each other.
Unlock with a Pro subscription to view this section.
View pricingReal-world example
No real-world example available yet.
Unlock with a Pro subscription to view this section.
Upgrade to ProCommon mistakes
No common mistakes listed yet.
Unlock with a Pro subscription to view this section.
Upgrade to ProFollow-up questions
No follow-up questions available yet.
Unlock with a Pro subscription to view this section.
Upgrade to Pro