11 articles
RSSHow to fix PostgreSQL JSONB query issues — -> vs ->> operators, @> containment, GIN indexes, type casting, array queries, and indexing strategies for JSONB columns.
How to fix PostgreSQL Row Level Security (RLS) issues — enabling RLS, policy expressions, BYPASSRLS role, SET ROLE, current_user vs session_user, and Supabase auth.uid() patterns.
How to fix PostgreSQL indexes not being used — EXPLAIN ANALYZE output, function on indexed column, type mismatches, statistics staleness, partial indexes, and query planner costs.
How to diagnose and fix slow PostgreSQL queries — reading EXPLAIN ANALYZE output, adding the right indexes, fixing N+1 queries, optimizing joins, and using pg_stat_statements.
How to fix PostgreSQL 'sorry, too many clients already' error — checking active connections, using connection pooling with PgBouncer, tuning max_connections, fixing ORM pool settings, and finding connection leaks.
How to fix PostgreSQL deadlock detected error caused by concurrent transactions, conflicting row locks, foreign key locks, and lock ordering issues.
How to fix the PostgreSQL 'relation does not exist' error caused by schema search_path issues, case sensitivity, wrong database connections, missing migrations, and more.
How to fix the PostgreSQL error 'permission denied for table' by granting privileges, fixing default permissions, resolving schema and ownership issues, RLS policies, and role inheritance.
How to fix PostgreSQL FATAL role does not exist error caused by missing database roles, peer authentication, wrong usernames, and platform-specific installation defaults.
How to fix the PostgreSQL error 'could not connect to server: Connection refused' caused by server not running, wrong host/port, pg_hba.conf, or firewall issues.
How to fix 'duplicate key value violates unique constraint' in PostgreSQL by resetting sequences, using upserts, fixing bulk imports, and handling concurrent inserts.