postgresql — FixDevsLatest fixes and solutions for postgresql errors on FixDevs.https://fixdevs.com/enThu, 26 Mar 2026 00:00:00 GMTFix: PostgreSQL JSONB Query Not Working — Operator Errors, Wrong Results, or Slow Querieshttps://fixdevs.com/blog/postgres-jsonb-query-not-working/https://fixdevs.com/blog/postgres-jsonb-query-not-working/How to fix PostgreSQL JSONB query issues — -> vs ->> operators, @> containment, GIN indexes, type casting, array queries, and indexing strategies for JSONB columns.Thu, 26 Mar 2026 00:00:00 GMTpostgresqldatabasebackenddebuggingFixDevsFix: PostgreSQL Row Level Security Not Working — Policy Not Applied, All Rows Visible, or Permission Deniedhttps://fixdevs.com/blog/postgres-row-level-security-not-working/https://fixdevs.com/blog/postgres-row-level-security-not-working/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.Thu, 26 Mar 2026 00:00:00 GMTpostgresqldatabasebackendsecuritydebuggingFixDevsFix: PostgreSQL Index Not Being Used — Query Planner Ignores Indexhttps://fixdevs.com/blog/postgres-index-not-used/https://fixdevs.com/blog/postgres-index-not-used/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.Sun, 22 Mar 2026 00:00:00 GMTpostgresqldatabasesqlperformancedebuggingFixDevsFix: PostgreSQL Slow Query — Finding and Optimizing with EXPLAIN ANALYZEhttps://fixdevs.com/blog/postgres-slow-query/https://fixdevs.com/blog/postgres-slow-query/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.Fri, 20 Mar 2026 00:00:00 GMTpostgresqldatabaseperformancebackenddebuggingFixDevsFix: PostgreSQL "sorry, too many clients already"https://fixdevs.com/blog/postgres-max-connections-exceeded/https://fixdevs.com/blog/postgres-max-connections-exceeded/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.Thu, 19 Mar 2026 00:00:00 GMTpostgresqldatabasedevopsbackenddebuggingFixDevsFix: PostgreSQL ERROR: deadlock detectedhttps://fixdevs.com/blog/postgres-deadlock-detected/https://fixdevs.com/blog/postgres-deadlock-detected/How to fix PostgreSQL deadlock detected error caused by concurrent transactions, conflicting row locks, foreign key locks, and lock ordering issues.Mon, 09 Mar 2026 00:00:00 GMTpostgresqldatabaseFixDevsFix: PostgreSQL permission denied for table (or relation, schema, sequence)https://fixdevs.com/blog/postgres-permission-denied-for-table/https://fixdevs.com/blog/postgres-permission-denied-for-table/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.Mon, 09 Mar 2026 00:00:00 GMTpostgresqldatabasedebuggingFixDevsFix: PostgreSQL ERROR: relation "table_name" does not existhttps://fixdevs.com/blog/postgres-relation-does-not-exist/https://fixdevs.com/blog/postgres-relation-does-not-exist/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.Mon, 09 Mar 2026 00:00:00 GMTpostgresqldatabasesqlFixDevsFix: PostgreSQL FATAL: role "username" does not existhttps://fixdevs.com/blog/postgresql-fatal-role-does-not-exist/https://fixdevs.com/blog/postgresql-fatal-role-does-not-exist/How to fix PostgreSQL FATAL role does not exist error caused by missing database roles, peer authentication, wrong usernames, and platform-specific installation defaults.Mon, 09 Mar 2026 00:00:00 GMTpostgresqldatabaseFixDevsFix: PostgreSQL Connection Refused – Could Not Connect to Serverhttps://fixdevs.com/blog/postgres-connection-refused/https://fixdevs.com/blog/postgres-connection-refused/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.Fri, 13 Feb 2026 00:00:00 GMTpostgresqldatabasedevopsFixDevsFix: PostgreSQL ERROR: duplicate key value violates unique constrainthttps://fixdevs.com/blog/postgresql-duplicate-key-violates-unique-constraint/https://fixdevs.com/blog/postgresql-duplicate-key-violates-unique-constraint/How to fix 'duplicate key value violates unique constraint' in PostgreSQL by resetting sequences, using upserts, fixing bulk imports, and handling concurrent inserts.Mon, 26 Jan 2026 00:00:00 GMTpostgresqldatabasedjangoFixDevs