🐘 PostgreSQL Errors

49 error notes

ERROR: ON CONFLICT DO UPDATE command cannot affect row a second time
HINT: Ensure that no rows proposed for insertion within the same command have duplicate constrained values.

postgresqlupsertsql-errorsdatabase-optimization

postgresqlbeginner

How to Fix the PostgreSQL Error: extension "uuid-ossp" does not exist

ERROR: extension "uuid-ossp" does not exist

postgresqldatabase-administrationuuid-ossplinux-tips

postgresqlbeginner

Fixing PostgreSQL 'ERROR: canceling statement due to statement timeout'

ERROR: canceling statement due to statement timeout

postgresqltimeoutstatement_timeoutperformance

postgresqlintermediate

Fixing PostgreSQL Error: 'more than one row returned by a subquery used as an expression'

ERROR: more than one row returned by a subquery used as an expression

postgresqlsqldatabase-optimizationtroubleshooting

postgresqlintermediate

Fix PostgreSQL 'cached plan must not change result type' After Schema Changes

ERROR: cached plan must not change result type

postgresqlprepared-statementschema-changecached-plan

postgresqlintermediate

Fixing PostgreSQL ERROR: invalid byte sequence for encoding "UTF8": 0x00

ERROR: invalid byte sequence for encoding "UTF8": 0x00

postgresqldatabase-administrationutf8data-migration

postgresqlbeginner

How to Fix PostgreSQL Error: "column is of type jsonb but expression is of type character varying"

ERROR: column "column_name" is of type jsonb but expression is of type character varying

postgresqljsonbdatabase-errorssql-casting

postgresqlbeginner

Fix PostgreSQL "column must appear in the GROUP BY clause" Error

ERROR: column "table.column_name" must appear in the GROUP BY clause or be used in an aggregate function

postgresqlsqlgroup-byaggregate

postgresqlbeginner

Fix PostgreSQL 'FATAL: lock file postmaster.pid already exists' After Crash

FATAL: lock file "/var/run/postgresql/14-main.pid" already exists
HINT: Is another postmaster (PID 12345) running in data directory "/var/lib/postgresql/14/main"?

startuplockfilepostmastercrash

postgresqladvanced

Fixing PostgreSQL 'cannot drop table because other objects depend on it' When Dropping Tables with Foreign Key Constraints

ERROR: cannot drop table users because other objects depend on it
DETAIL: constraint orders_user_id_fkey on table orders depends on table users
HINT: Use DROP ... CASCADE to drop the dependent objects too.

postgresqldrop-tableforeign-keycascade

postgresqlbeginner

Solving the PostgreSQL Error: 'there is no unique constraint matching given keys'

ERROR: there is no unique constraint matching given keys for referenced table "orders"

postgresqldatabase-designsql-errorsbackend-development

postgresqlintermediate

Fix PostgreSQL 'could not create unique index' When Duplicate Data Exists

ERROR: could not create unique index "users_email_key"
DETAIL: Key (email)=(user@example.com) is duplicated.

uniqueindexconstraintmigration

postgresqlintermediate

Fix PostgreSQL 'index row size exceeds maximum 2712' Error on Long Text Columns

ERROR: index row size 3496 exceeds maximum 2712 for index "table_column_idx"

postgresqlindexbtreevarchar

postgresqlintermediate

Fixing PostgreSQL's 'column cannot be cast automatically to type integer' Error

ERROR: column "status" cannot be cast automatically to type integer
HINT: You might need to specify "USING status::integer".

postgresqldatabase-migrationsql-tipstype-casting

postgresqlintermediate

Fix PostgreSQL 'temporary file size exceeds temp_file_limit' Error

ERROR: temporary file size exceeds temp_file_limit (1048576kB)

postgresqltemp-filequery-optimizationwork-mem

postgresqlbeginner

Fix PostgreSQL 'column reference is ambiguous' Error When Joining Tables

ERROR: column reference "id" is ambiguous

postgresqljoinambiguousselect

postgresqlbeginner

Fix PostgreSQL ERROR: division by zero in SQL Queries

ERROR: division by zero

postgresqlsqlarithmeticquery

postgresqlintermediate

Fix PostgreSQL 'current transaction is aborted, commands ignored until end of transaction block'

ERROR: current transaction is aborted, commands ignored until end of transaction block

postgresqltransactionerror-handlingrollback

postgresqlintermediate

Fix PostgreSQL 'SSL SYSCALL error: EOF detected' When Connection Drops Unexpectedly

SSL SYSCALL error: EOF detected

postgresqlsslconnectionnetwork

postgresqlbeginner

Fix PostgreSQL 'could not open file for reading: Permission denied' with COPY Command

ERROR: could not open file "/var/data/import.csv" for reading: Permission denied

postgresqlcopypermissioncsv

postgresqlbeginner

Fixing PostgreSQL Error FATAL: database "myapp_production" does not exist

FATAL: database "myapp_production" does not exist

postgresqldatabaseconnectioncreatedb

postgresqlintermediate

Fixing PostgreSQL's 'S_1' Already Exists Error in PgBouncer

ERROR: prepared statement "S_1" already exists

postgresqlprepared-statementpgbouncersql-error

postgresqlbeginner

Fixing PostgreSQL ERROR: operator does not exist: integer = character varying

ERROR: operator does not exist: integer = character varying
HINT: No operator matches the given name and argument types. You might need to add explicit type casts.

postgresqldatabase-optimizationsql-errorsbackend-development

postgresqlintermediate

Fixing PostgreSQL 'integer out of range' Errors: A Safe Migration Guide

ERROR: integer out of range

postgresqldatabase-administrationsql-optimizationbackend-engineering

postgresqlbeginner

How to Fix PostgreSQL 'FATAL: the database system is starting up' Error

FATAL: the database system is starting up

postgresqldevopsdatabase-recoverydocker

postgresqlbeginner

Solving the PostgreSQL 'value too long for type character varying' Error

ERROR: value too long for type character varying(255)

postgresqlvarchardatabase-designsql-errors

postgresqlintermediate

Fix PostgreSQL 'ERROR: function does not exist' Caused by Wrong search_path

ERROR: function function_name(unknown) does not exist

postgresqlfunctionschemasearch-path

postgresqlbeginner

Fixing the PostgreSQL 'FATAL: role does not exist' Error

FATAL: role "myuser" does not exist

postgresqldatabase-administrationauthenticationlinux

postgresqlintermediate

Fix PostgreSQL 'duplicate key value violates unique constraint' Error

ERROR: duplicate key value violates unique constraint

postgresqluniqueconstraintprimary-key

postgresqlintermediate

Fix PostgreSQL 'insert or update violates foreign key constraint' Error

ERROR: insert or update on table "orders" violates foreign key constraint "orders_customer_id_fkey"

postgresqlforeign-keyconstraintreferential-integrity

postgresqlintermediate

Fix PostgreSQL 'ERROR: out of shared memory' When Too Many Locks or Temp Tables

ERROR: out of shared memory

postgresqlshared-memorymax-locks-per-transactionconfiguration

postgresqlintermediate

Fix PostgreSQL 'canceling statement due to conflict with recovery' on Standby Server

ERROR: canceling statement due to conflict with recovery

postgresqlreplicationhot-standbyrecovery-conflict

postgresqlintermediate

Fix PostgreSQL 'could not serialize access due to concurrent update' in Serializable Transactions

ERROR: could not serialize access due to concurrent update
SQLSTATE: 40001

postgresqltransactionserializableconcurrency

postgresqlbeginner

Fix PostgreSQL 'null value in column violates not-null constraint' Error

ERROR: null value in column "user_id" of relation "orders" violates not-null constraint
DETAIL: Failing row contains (null, 101, 2024-01-15).

postgresqlconstraintnullinsert

postgresqlintermediate

Fix PostgreSQL FATAL: remaining connection slots are reserved for non-replication superuser connections

FATAL: remaining connection slots are reserved for non-replication superuser connections

postgresqlmax-connectionsconnection-poolpg_hba

postgresqlbeginner

Fix PostgreSQL 'invalid input syntax for type integer: "abc"' Error

ERROR: invalid input syntax for type integer: "abc"

postgresqldata-typeinsertcast

postgresqlbeginner

Fix PostgreSQL 'FATAL: password authentication failed' for User

FATAL: password authentication failed for user "your_user"

postgresqlauthenticationpasswordpg_hba.conf

postgresqlintermediate

Fix PostgreSQL ERROR: permission denied for table

ERROR: permission denied for table

postgresqlpermissiongrantrole

postgresqlbeginner

Fix PostgreSQL ERROR: relation "table_name" does not exist

ERROR: relation "table_name" does not exist

postgresqltableschemarelation

postgresqlbeginner

Fix PostgreSQL FATAL: Peer authentication failed for user

FATAL: Peer authentication failed for user

postgresqlauthpg_hbapeer

postgresqlintermediate

Fix PostgreSQL 'No space left on device' Error: could not write to file base/...

ERROR: could not write to file "base/..." No space left on device

postgresqldisk spacestorage

postgresqlintermediate

Fix PostgreSQL 'ERROR: deadlock detected' in Transactions

ERROR: deadlock detected

postgresqldeadlocktransactionconcurrency

postgresqlintermediate

Fix PostgreSQL Connection Refused: psql: error: connection to server on host "localhost" (127.0.0.1), port 5432 failed: Connection refused

psql: error: connection to server on host "localhost" (127.0.0.1), port 5432 failed: Connection refused

postgresqlconnectionpg_hbaport

🐘 PostgreSQL Errors

Fixing PostgreSQL 'cannot execute INSERT in a read-only transaction' Errors

How to Force-Drop an Active PostgreSQL Replication Slot

How to Fix the PostgreSQL UPSERT Error: 'cannot affect row a second time'

How to Fix the PostgreSQL Error: extension "uuid-ossp" does not exist

Fixing PostgreSQL 'ERROR: canceling statement due to statement timeout'

Fixing PostgreSQL Error: 'more than one row returned by a subquery used as an expression'

Fix PostgreSQL 'cached plan must not change result type' After Schema Changes

Fixing PostgreSQL ERROR: invalid byte sequence for encoding "UTF8": 0x00

How to Fix PostgreSQL Error: "column is of type jsonb but expression is of type character varying"

Fix PostgreSQL "column must appear in the GROUP BY clause" Error

Fix PostgreSQL 'FATAL: lock file postmaster.pid already exists' After Crash

Fixing PostgreSQL ERROR: missing chunk number 0 for toast value

Fixing PostgreSQL Error: 'could not translate host name to address' DNS Issues

Fix PostgreSQL 'row is too big: size exceeds maximum' Error on INSERT

Fixing PostgreSQL ERROR: aggregate functions are not allowed in WHERE

Fixing PostgreSQL 'cannot drop table because other objects depend on it' When Dropping Tables with Foreign Key Constraints

Solving the PostgreSQL Error: 'there is no unique constraint matching given keys'

Fix PostgreSQL 'could not create unique index' When Duplicate Data Exists

Fix PostgreSQL 'index row size exceeds maximum 2712' Error on Long Text Columns

Fixing PostgreSQL's 'column cannot be cast automatically to type integer' Error

Fix PostgreSQL 'temporary file size exceeds temp_file_limit' Error

Fix PostgreSQL 'column reference is ambiguous' Error When Joining Tables

Fix PostgreSQL ERROR: division by zero in SQL Queries

Fix PostgreSQL 'current transaction is aborted, commands ignored until end of transaction block'

Fix PostgreSQL 'SSL SYSCALL error: EOF detected' When Connection Drops Unexpectedly

Fix PostgreSQL 'could not open file for reading: Permission denied' with COPY Command

Fixing PostgreSQL Error FATAL: database "myapp_production" does not exist

Fixing PostgreSQL's 'S_1' Already Exists Error in PgBouncer

Fixing PostgreSQL ERROR: operator does not exist: integer = character varying

Fixing PostgreSQL 'integer out of range' Errors: A Safe Migration Guide

How to Fix PostgreSQL 'FATAL: the database system is starting up' Error

Solving the PostgreSQL 'value too long for type character varying' Error

Fix PostgreSQL 'ERROR: function does not exist' Caused by Wrong search_path

Fixing the PostgreSQL 'FATAL: role does not exist' Error

Fix PostgreSQL 'duplicate key value violates unique constraint' Error

Fix PostgreSQL 'insert or update violates foreign key constraint' Error

Fix PostgreSQL 'ERROR: out of shared memory' When Too Many Locks or Temp Tables

Fix PostgreSQL 'canceling statement due to conflict with recovery' on Standby Server

Fix PostgreSQL 'could not serialize access due to concurrent update' in Serializable Transactions

Fix PostgreSQL 'null value in column violates not-null constraint' Error

Fix PostgreSQL FATAL: remaining connection slots are reserved for non-replication superuser connections

Fix PostgreSQL 'invalid input syntax for type integer: "abc"' Error

Fix PostgreSQL 'FATAL: password authentication failed' for User

Fix PostgreSQL ERROR: permission denied for table

Fix PostgreSQL ERROR: relation "table_name" does not exist

Fix PostgreSQL FATAL: Peer authentication failed for user

Fix PostgreSQL 'No space left on device' Error: could not write to file base/...

Fix PostgreSQL 'ERROR: deadlock detected' in Transactions

Fix PostgreSQL Connection Refused: psql: error: connection to server on host "localhost" (127.0.0.1), port 5432 failed: Connection refused