sql

Database deadlock between transactions

deadlock detected|was deadlocked on.*resources

Fixes

1.Access tables in a consistent order across transactions
2.Keep transactions short — minimize lock hold time
3.Use SELECT ... FOR UPDATE NOWAIT and retry on failure
4.Add retry logic with exponential backoff in application code

deadlockconcurrencytransactions

Related Errors

PostgreSQL JSONB extracting from scalar

ERROR:.*cannot extract elements from a scalar.*jsonb

•Check value is an object/array before extraction: jsonb_typeof(col) = 'object'
•Use COALESCE with '{}' for null/scalar values

PostgreSQL JSONB operator type mismatch

ERROR:.*operator does not exist.*jsonb @> text

•Cast the right operand to jsonb: col @> '{"key": "val"}'::jsonb
•Use ->> operator for text extraction instead of ->

PostgreSQL full-text search config not found

ERROR:.*text search configuration.*does not exist

•Create the text search configuration or use a built-in one (english, simple)
•Install the pg_catalog extension if using a custom configuration