sql

N+1 query problem detected

N\+1.*quer(y|ies)|SELECT.*executed (\d{2,})\s*times

Fixes

1.Use eager loading: includes(:association) in Rails, with() in Laravel
2.Use JOIN to fetch related data in a single query
3.Use batch loading: IN clause with collected IDs
4.Add query monitoring gem/package to detect in development

n-plus-oneperformanceorm

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