Error map

55006 ERROR: database "x" is being accessed by other users — There is 1 other session using the database.

PostgreSQL · layer 5, Data

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Centre: this error. First ring: errors it is linked with (7). Outer ring: what those are linked with. Colours show the layer of a request each error belongs to. Click any dot to re-centre the map on it; hover to follow its connections. The centre dot opens the error page.

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55006 — ERROR: database "x" is being accessed by other users — There is 1 other session using the database. (PostgreSQL)5500657014 — ERROR: canceling statement due to statement timeout (PostgreSQL)5701442804 — ERROR: column "x" is of type integer but expression is of type text — HINT: You will need to rewrite or cast the expression. (PostgreSQL)428042BP01 — ERROR: cannot drop table x because other objects depend on it (PostgreSQL)2BP0142703 — PostgreSQL: ERROR: column "x" does not exist (PostgreSQL)4270342701 — ERROR: column "x" of relation "y" already exists (PostgreSQL)42701port 5432 in use — LOG: could not bind IPv4 address "0.0.0.0": Address already in use — Is another postmaster already running on port 5432? (PostgreSQL)port 5432 in use08P01 — ERROR: bind message supplies 2 parameters, but prepared statement requires 1 (PostgreSQL)08P01504 — HTTP 504 Gateway Timeout (HTTP)504524 — Cloudflare Error 524: A Timeout Occurred (Cloudflare)524304 — HTTP 304 Not Modified (HTTP)3041093 — MySQL ERROR 1093 (HY000): You can't specify target table 'x' for update in FROM clause (MySQL)10931175 — MySQL ERROR 1175 (HY000): You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column (MySQL)11751241 — MySQL ERROR 1241 (21000): Operand should contain 1 column(s) (MySQL)12411146 — MySQL ERROR 1146 (42S02): Table 'db.table' doesn't exist (MySQL)114642P01 — PostgreSQL: ERROR: relation "x" does not exist (PostgreSQL)42P011051 — MySQL ERROR 1051 (42S02): Unknown table 'x' (MySQL)10511054 — MySQL ERROR 1054 (42S22): Unknown column in 'field list' (MySQL)1054ambiguous column — Column reference is ambiguous / Column 'id' in field list is ambiguous (MySQL 1052) (SQL)ambiguous column23505 — PostgreSQL: ERROR: duplicate key value violates unique constraint (PostgreSQL)235051060 — MySQL ERROR 1060 (42S21): Duplicate column name 'x' (MySQL)10601091 — MySQL ERROR 1091 (42000): Can't DROP 'x'; check that column/key exists (MySQL)109142P07 — ERROR: relation "x" already exists (PostgreSQL)42P07EADDRINUSE — Error: listen EADDRINUSE: address already in use :::3000 (Node.js)EADDRINUSEport is already allocated — Docker: Bind for 0.0.0.0:80 failed: port is already allocated (Docker)port is already all…500.30 — HTTP Error 500.30 - ASP.NET Core app failed to start (.NET)500.30IRQL_NOT_LESS_OR_EQUAL — Blue Screen: IRQL_NOT_LESS_OR_EQUAL (Stop code 0x0000000A) (Windows)IRQL_NOT_LESS_OR_EQ…NonUniqueResultException — IncorrectResultSizeDataAccessException: query did not return a unique result: 2 (Java)NonUniqueResultExce…42883 operator — ERROR: operator does not exist: integer = text (PostgreSQL)42883 operator

Directly related (7)

57014PostgreSQL

ERROR: canceling statement due to statement timeout

A query ran longer than statement_timeout and PostgreSQL cancelled it.

42804PostgreSQL

ERROR: column "x" is of type integer but expression is of type text — HINT: You will need to rewrite or cast the expression.

An INSERT/UPDATE supplies a value of a different type than the column, and PostgreSQL won’t cast implicitly.

2BP01PostgreSQL

ERROR: cannot drop table x because other objects depend on it

Views, foreign keys or other objects depend on what you’re dropping.

42703PostgreSQL

PostgreSQL: ERROR: column "x" does not exist

PostgreSQL can’t find the column — a missing migration, a case-sensitive quoted name, or a string literal written in double quote…

42701PostgreSQL

ERROR: column "x" of relation "y" already exists

ALTER TABLE ADD COLUMN for a column that’s already there.

port 5432 in usePostgreSQL

LOG: could not bind IPv4 address "0.0.0.0": Address already in use — Is another postmaster already running on port 5432?

Another process (often a second PostgreSQL install or a container) already listens on 5432.

08P01PostgreSQL

ERROR: bind message supplies 2 parameters, but prepared statement requires 1

The number of query parameters sent doesn’t match the $1, $2 … placeholders in the SQL.

Two steps away (21)

504HTTP

HTTP 504 Gateway Timeout

A proxy or gateway waited too long for the upstream server to respond and gave up.

524Cloudflare

Cloudflare Error 524: A Timeout Occurred

Cloudflare connected to the origin, but the origin didn’t send an HTTP response within 100 seconds.

304HTTP

HTTP 304 Not Modified

The cached copy is still valid, so the server sends no body and the client reuses its cache.

1093MySQL

MySQL ERROR 1093 (HY000): You can't specify target table 'x' for update in FROM clause

An UPDATE/DELETE uses a subquery that reads from the same table, which MySQL doesn’t allow directly.

1175MySQL

MySQL ERROR 1175 (HY000): You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column

MySQL Workbench’s safe updates mode blocked an UPDATE/DELETE without a key-based WHERE.

1241MySQL

MySQL ERROR 1241 (21000): Operand should contain 1 column(s)

A subquery or expression returned several columns where only one is expected.

1146MySQL

MySQL ERROR 1146 (42S02): Table 'db.table' doesn't exist

The query references a table that MySQL can’t find in that database.

42P01PostgreSQL

PostgreSQL: ERROR: relation "x" does not exist

The table/view isn’t found — missing migration, wrong schema, or a case-sensitive quoted name.

1051MySQL

MySQL ERROR 1051 (42S02): Unknown table 'x'

DROP TABLE targeted a table that doesn’t exist.

1054MySQL

MySQL ERROR 1054 (42S22): Unknown column in 'field list'

The query references a column that doesn’t exist in the table (or an unquoted string being read as a column).

ambiguous columnSQL

Column reference is ambiguous / Column 'id' in field list is ambiguous (MySQL 1052)

A column name exists in more than one joined table, so the database doesn’t know which one you mean.

23505PostgreSQL

PostgreSQL: ERROR: duplicate key value violates unique constraint

An INSERT/UPDATE would create a duplicate in a UNIQUE or PRIMARY KEY column — or the id sequence is behind the existing data.

1060MySQL

MySQL ERROR 1060 (42S21): Duplicate column name 'x'

A CREATE/ALTER adds a column that already exists, or a SELECT in a view/derived table produces two columns with the same name.

1091MySQL

MySQL ERROR 1091 (42000): Can't DROP 'x'; check that column/key exists

ALTER TABLE tried to drop a column or index that doesn’t exist.

42P07PostgreSQL

ERROR: relation "x" already exists

CREATE TABLE/INDEX/SEQUENCE used a name that already exists in that schema.

EADDRINUSENode.js

Error: listen EADDRINUSE: address already in use :::3000

Another process is already listening on that port.

port is already allocatedDocker

Docker: Bind for 0.0.0.0:80 failed: port is already allocated

Another container or host process already publishes that host port.

500.30.NET

HTTP Error 500.30 - ASP.NET Core app failed to start

IIS/Azure’s ASP.NET Core Module launched your app but it crashed during startup.

IRQL_NOT_LESS_OR_EQUALWindows

Blue Screen: IRQL_NOT_LESS_OR_EQUAL (Stop code 0x0000000A)

A driver accessed memory at an interrupt level where that’s not allowed — almost always a faulty or incompatible driver, sometime…

NonUniqueResultExceptionJava

IncorrectResultSizeDataAccessException: query did not return a unique result: 2

A query expected one row but found several.

42883 operatorPostgreSQL

ERROR: operator does not exist: integer = text

A comparison or operation mixes types PostgreSQL won’t implicitly convert.

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