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PostgreSQL 8.1.23 Documentation
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Appendix A. PostgreSQL Error Codes

All messages emitted by the PostgreSQL server are assigned five-character error codes that follow the SQL standard's conventions for "SQLSTATE" codes. Applications that need to know which error condition has occurred should usually test the error code, rather than looking at the textual error message. The error codes are less likely to change across PostgreSQL releases, and also are not subject to change due to localization of error messages. Note that some, but not all, of the error codes produced by PostgreSQL are defined by the SQL standard; some additional error codes for conditions not defined by the standard have been invented or borrowed from other databases.

According to the standard, the first two characters of an error code denote a class of errors, while the last three characters indicate a specific condition within that class. Thus, an application that does not recognize the specific error code may still be able to infer what to do from the error class.

Table A-1 lists all the error codes defined in PostgreSQL 8.1.23. (Some are not actually used at present, but are defined by the SQL standard.) The error classes are also shown. For each error class there is a "standard" error code having the last three characters 000. This code is used only for error conditions that fall within the class but do not have any more-specific code assigned.

The PL/pgSQL condition name for each error code is the same as the phrase shown in the table, with underscores substituted for spaces. For example, code 22012, DIVISION BY ZERO, has condition name DIVISION_BY_ZERO. Condition names can be written in either upper or lower case. (Note that PL/pgSQL does not recognize warning, as opposed to error, condition names; those are classes 00, 01, and 02.)

Table A-1. PostgreSQL Error Codes

Error Code	Meaning	Constant
Class 00 — Successful Completion
`00000`	SUCCESSFUL COMPLETION	successful_completion
Class 01 — Warning
`01000`	WARNING	warning
`0100C`	DYNAMIC RESULT SETS RETURNED	dynamic_result_sets_returned
`01008`	IMPLICIT ZERO BIT PADDING	implicit_zero_bit_padding
`01003`	NULL VALUE ELIMINATED IN SET FUNCTION	null_value_eliminated_in_set_function
`01007`	PRIVILEGE NOT GRANTED	privilege_not_granted
`01006`	PRIVILEGE NOT REVOKED	privilege_not_revoked
`01004`	STRING DATA RIGHT TRUNCATION	string_data_right_truncation
`01P01`	DEPRECATED FEATURE	deprecated_feature
Class 02 — No Data (this is also a warning class per the SQL standard)
`02000`	NO DATA	no_data
`02001`	NO ADDITIONAL DYNAMIC RESULT SETS RETURNED	no_additional_dynamic_result_sets_returned
Class 03 — SQL Statement Not Yet Complete
`03000`	SQL STATEMENT NOT YET COMPLETE	sql_statement_not_yet_complete
Class 08 — Connection Exception
`08000`	CONNECTION EXCEPTION	connection_exception
`08003`	CONNECTION DOES NOT EXIST	connection_does_not_exist
`08006`	CONNECTION FAILURE	connection_failure
`08001`	SQLCLIENT UNABLE TO ESTABLISH SQLCONNECTION	sqlclient_unable_to_establish_sqlconnection
`08004`	SQLSERVER REJECTED ESTABLISHMENT OF SQLCONNECTION	sqlserver_rejected_establishment_of_sqlconnection
`08007`	TRANSACTION RESOLUTION UNKNOWN	transaction_resolution_unknown
`08P01`	PROTOCOL VIOLATION	protocol_violation
Class 09 — Triggered Action Exception
`09000`	TRIGGERED ACTION EXCEPTION	triggered_action_exception
Class 0A — Feature Not Supported
`0A000`	FEATURE NOT SUPPORTED	feature_not_supported
Class 0B — Invalid Transaction Initiation
`0B000`	INVALID TRANSACTION INITIATION	invalid_transaction_initiation
Class 0F — Locator Exception
`0F000`	LOCATOR EXCEPTION	locator_exception
`0F001`	INVALID LOCATOR SPECIFICATION	invalid_locator_specification
Class 0L — Invalid Grantor
`0L000`	INVALID GRANTOR	invalid_grantor
`0LP01`	INVALID GRANT OPERATION	invalid_grant_operation
Class 0P — Invalid Role Specification
`0P000`	INVALID ROLE SPECIFICATION	invalid_role_specification
Class 21 — Cardinality Violation
`21000`	CARDINALITY VIOLATION	cardinality_violation
Class 22 — Data Exception
`22000`	DATA EXCEPTION	data_exception
`2202E`	ARRAY SUBSCRIPT ERROR	array_subscript_error
`22021`	CHARACTER NOT IN REPERTOIRE	character_not_in_repertoire
`22008`	DATETIME FIELD OVERFLOW	datetime_field_overflow
`22012`	DIVISION BY ZERO	division_by_zero
`22005`	ERROR IN ASSIGNMENT	error_in_assignment
`2200B`	ESCAPE CHARACTER CONFLICT	escape_character_conflict
`22022`	INDICATOR OVERFLOW	indicator_overflow
`22015`	INTERVAL FIELD OVERFLOW	interval_field_overflow
`2201E`	INVALID ARGUMENT FOR LOGARITHM	invalid_argument_for_logarithm
`2201F`	INVALID ARGUMENT FOR POWER FUNCTION	invalid_argument_for_power_function
`2201G`	INVALID ARGUMENT FOR WIDTH BUCKET FUNCTION	invalid_argument_for_width_bucket_function
`22018`	INVALID CHARACTER VALUE FOR CAST	invalid_character_value_for_cast
`22007`	INVALID DATETIME FORMAT	invalid_datetime_format
`22019`	INVALID ESCAPE CHARACTER	invalid_escape_character
`2200D`	INVALID ESCAPE OCTET	invalid_escape_octet
`22025`	INVALID ESCAPE SEQUENCE	invalid_escape_sequence
`22P06`	NONSTANDARD USE OF ESCAPE CHARACTER	nonstandard_use_of_escape_character
`22010`	INVALID INDICATOR PARAMETER VALUE	invalid_indicator_parameter_value
`22020`	INVALID LIMIT VALUE	invalid_limit_value
`22023`	INVALID PARAMETER VALUE	invalid_parameter_value
`2201B`	INVALID REGULAR EXPRESSION	invalid_regular_expression
`22009`	INVALID TIME ZONE DISPLACEMENT VALUE	invalid_time_zone_displacement_value
`2200C`	INVALID USE OF ESCAPE CHARACTER	invalid_use_of_escape_character
`2200G`	MOST SPECIFIC TYPE MISMATCH	most_specific_type_mismatch
`22004`	NULL VALUE NOT ALLOWED	null_value_not_allowed
`22002`	NULL VALUE NO INDICATOR PARAMETER	null_value_no_indicator_parameter
`22003`	NUMERIC VALUE OUT OF RANGE	numeric_value_out_of_range
`22026`	STRING DATA LENGTH MISMATCH	string_data_length_mismatch
`22001`	STRING DATA RIGHT TRUNCATION	string_data_right_truncation
`22011`	SUBSTRING ERROR	substring_error
`22027`	TRIM ERROR	trim_error
`22024`	UNTERMINATED C STRING	unterminated_c_string
`2200F`	ZERO LENGTH CHARACTER STRING	zero_length_character_string
`22P01`	FLOATING POINT EXCEPTION	floating_point_exception
`22P02`	INVALID TEXT REPRESENTATION	invalid_text_representation
`22P03`	INVALID BINARY REPRESENTATION	invalid_binary_representation
`22P04`	BAD COPY FILE FORMAT	bad_copy_file_format
`22P05`	UNTRANSLATABLE CHARACTER	untranslatable_character
Class 23 — Integrity Constraint Violation
`23000`	INTEGRITY CONSTRAINT VIOLATION	integrity_constraint_violation
`23001`	RESTRICT VIOLATION	restrict_violation
`23502`	NOT NULL VIOLATION	not_null_violation
`23503`	FOREIGN KEY VIOLATION	foreign_key_violation
`23505`	UNIQUE VIOLATION	unique_violation
`23514`	CHECK VIOLATION	check_violation
Class 24 — Invalid Cursor State
`24000`	INVALID CURSOR STATE	invalid_cursor_state
Class 25 — Invalid Transaction State
`25000`	INVALID TRANSACTION STATE	invalid_transaction_state
`25001`	ACTIVE SQL TRANSACTION	active_sql_transaction
`25002`	BRANCH TRANSACTION ALREADY ACTIVE	branch_transaction_already_active
`25008`	HELD CURSOR REQUIRES SAME ISOLATION LEVEL	held_cursor_requires_same_isolation_level
`25003`	INAPPROPRIATE ACCESS MODE FOR BRANCH TRANSACTION	inappropriate_access_mode_for_branch_transaction
`25004`	INAPPROPRIATE ISOLATION LEVEL FOR BRANCH TRANSACTION	inappropriate_isolation_level_for_branch_transaction
`25005`	NO ACTIVE SQL TRANSACTION FOR BRANCH TRANSACTION	no_active_sql_transaction_for_branch_transaction
`25006`	READ ONLY SQL TRANSACTION	read_only_sql_transaction
`25007`	SCHEMA AND DATA STATEMENT MIXING NOT SUPPORTED	schema_and_data_statement_mixing_not_supported
`25P01`	NO ACTIVE SQL TRANSACTION	no_active_sql_transaction
`25P02`	IN FAILED SQL TRANSACTION	in_failed_sql_transaction
Class 26 — Invalid SQL Statement Name
`26000`	INVALID SQL STATEMENT NAME	invalid_sql_statement_name
Class 27 — Triggered Data Change Violation
`27000`	TRIGGERED DATA CHANGE VIOLATION	triggered_data_change_violation
Class 28 — Invalid Authorization Specification
`28000`	INVALID AUTHORIZATION SPECIFICATION	invalid_authorization_specification
Class 2B — Dependent Privilege Descriptors Still Exist
`2B000`	DEPENDENT PRIVILEGE DESCRIPTORS STILL EXIST	dependent_privilege_descriptors_still_exist
`2BP01`	DEPENDENT OBJECTS STILL EXIST	dependent_objects_still_exist
Class 2D — Invalid Transaction Termination
`2D000`	INVALID TRANSACTION TERMINATION	invalid_transaction_termination
Class 2F — SQL Routine Exception
`2F000`	SQL ROUTINE EXCEPTION	sql_routine_exception
`2F005`	FUNCTION EXECUTED NO RETURN STATEMENT	function_executed_no_return_statement
`2F002`	MODIFYING SQL DATA NOT PERMITTED	modifying_sql_data_not_permitted
`2F003`	PROHIBITED SQL STATEMENT ATTEMPTED	prohibited_sql_statement_attempted
`2F004`	READING SQL DATA NOT PERMITTED	reading_sql_data_not_permitted
Class 34 — Invalid Cursor Name
`34000`	INVALID CURSOR NAME	invalid_cursor_name
Class 38 — External Routine Exception
`38000`	EXTERNAL ROUTINE EXCEPTION	external_routine_exception
`38001`	CONTAINING SQL NOT PERMITTED	containing_sql_not_permitted
`38002`	MODIFYING SQL DATA NOT PERMITTED	modifying_sql_data_not_permitted
`38003`	PROHIBITED SQL STATEMENT ATTEMPTED	prohibited_sql_statement_attempted
`38004`	READING SQL DATA NOT PERMITTED	reading_sql_data_not_permitted
Class 39 — External Routine Invocation Exception
`39000`	EXTERNAL ROUTINE INVOCATION EXCEPTION	external_routine_invocation_exception
`39001`	INVALID SQLSTATE RETURNED	invalid_sqlstate_returned
`39004`	NULL VALUE NOT ALLOWED	null_value_not_allowed
`39P01`	TRIGGER PROTOCOL VIOLATED	trigger_protocol_violated
`39P02`	SRF PROTOCOL VIOLATED	srf_protocol_violated
Class 3B — Savepoint Exception
`3B000`	SAVEPOINT EXCEPTION	savepoint_exception
`3B001`	INVALID SAVEPOINT SPECIFICATION	invalid_savepoint_specification
Class 3D — Invalid Catalog Name
`3D000`	INVALID CATALOG NAME	invalid_catalog_name
Class 3F — Invalid Schema Name
`3F000`	INVALID SCHEMA NAME	invalid_schema_name
Class 40 — Transaction Rollback
`40000`	TRANSACTION ROLLBACK	transaction_rollback
`40002`	TRANSACTION INTEGRITY CONSTRAINT VIOLATION	transaction_integrity_constraint_violation
`40001`	SERIALIZATION FAILURE	serialization_failure
`40003`	STATEMENT COMPLETION UNKNOWN	statement_completion_unknown
`40P01`	DEADLOCK DETECTED	deadlock_detected
Class 42 — Syntax Error or Access Rule Violation
`42000`	SYNTAX ERROR OR ACCESS RULE VIOLATION	syntax_error_or_access_rule_violation
`42601`	SYNTAX ERROR	syntax_error
`42501`	INSUFFICIENT PRIVILEGE	insufficient_privilege
`42846`	CANNOT COERCE	cannot_coerce
`42803`	GROUPING ERROR	grouping_error
`42830`	INVALID FOREIGN KEY	invalid_foreign_key
`42602`	INVALID NAME	invalid_name
`42622`	NAME TOO LONG	name_too_long
`42939`	RESERVED NAME	reserved_name
`42804`	DATATYPE MISMATCH	datatype_mismatch
`42P18`	INDETERMINATE DATATYPE	indeterminate_datatype
`42809`	WRONG OBJECT TYPE	wrong_object_type
`42703`	UNDEFINED COLUMN	undefined_column
`42883`	UNDEFINED FUNCTION	undefined_function
`42P01`	UNDEFINED TABLE	undefined_table
`42P02`	UNDEFINED PARAMETER	undefined_parameter
`42704`	UNDEFINED OBJECT	undefined_object
`42701`	DUPLICATE COLUMN	duplicate_column
`42P03`	DUPLICATE CURSOR	duplicate_cursor
`42P04`	DUPLICATE DATABASE	duplicate_database
`42723`	DUPLICATE FUNCTION	duplicate_function
`42P05`	DUPLICATE PREPARED STATEMENT	duplicate_prepared_statement
`42P06`	DUPLICATE SCHEMA	duplicate_schema
`42P07`	DUPLICATE TABLE	duplicate_table
`42712`	DUPLICATE ALIAS	duplicate_alias
`42710`	DUPLICATE OBJECT	duplicate_object
`42702`	AMBIGUOUS COLUMN	ambiguous_column
`42725`	AMBIGUOUS FUNCTION	ambiguous_function
`42P08`	AMBIGUOUS PARAMETER	ambiguous_parameter
`42P09`	AMBIGUOUS ALIAS	ambiguous_alias
`42P10`	INVALID COLUMN REFERENCE	invalid_column_reference
`42611`	INVALID COLUMN DEFINITION	invalid_column_definition
`42P11`	INVALID CURSOR DEFINITION	invalid_cursor_definition
`42P12`	INVALID DATABASE DEFINITION	invalid_database_definition
`42P13`	INVALID FUNCTION DEFINITION	invalid_function_definition
`42P14`	INVALID PREPARED STATEMENT DEFINITION	invalid_prepared_statement_definition
`42P15`	INVALID SCHEMA DEFINITION	invalid_schema_definition
`42P16`	INVALID TABLE DEFINITION	invalid_table_definition
`42P17`	INVALID OBJECT DEFINITION	invalid_object_definition
Class 44 — WITH CHECK OPTION Violation
`44000`	WITH CHECK OPTION VIOLATION	with_check_option_violation
Class 53 — Insufficient Resources
`53000`	INSUFFICIENT RESOURCES	insufficient_resources
`53100`	DISK FULL	disk_full
`53200`	OUT OF MEMORY	out_of_memory
`53300`	TOO MANY CONNECTIONS	too_many_connections
Class 54 — Program Limit Exceeded
`54000`	PROGRAM LIMIT EXCEEDED	program_limit_exceeded
`54001`	STATEMENT TOO COMPLEX	statement_too_complex
`54011`	TOO MANY COLUMNS	too_many_columns
`54023`	TOO MANY ARGUMENTS	too_many_arguments
Class 55 — Object Not In Prerequisite State
`55000`	OBJECT NOT IN PREREQUISITE STATE	object_not_in_prerequisite_state
`55006`	OBJECT IN USE	object_in_use
`55P02`	CANT CHANGE RUNTIME PARAM	cant_change_runtime_param
`55P03`	LOCK NOT AVAILABLE	lock_not_available
Class 57 — Operator Intervention
`57000`	OPERATOR INTERVENTION	operator_intervention
`57014`	QUERY CANCELED	query_canceled
`57P01`	ADMIN SHUTDOWN	admin_shutdown
`57P02`	CRASH SHUTDOWN	crash_shutdown
`57P03`	CANNOT CONNECT NOW	cannot_connect_now
Class 58 — System Error (errors external to PostgreSQL itself)
`58030`	IO ERROR	io_error
`58P01`	UNDEFINED FILE	undefined_file
`58P02`	DUPLICATE FILE	duplicate_file
Class F0 — Configuration File Error
`F0000`	CONFIG FILE ERROR	config_file_error
`F0001`	LOCK FILE EXISTS	lock_file_exists
Class P0 — PL/pgSQL Error
`P0000`	PLPGSQL ERROR	plpgsql_error
`P0001`	RAISE EXCEPTION	raise_exception
Class XX — Internal Error
`XX000`	INTERNAL ERROR	internal_error
`XX001`	DATA CORRUPTED	data_corrupted
`XX002`	INDEX CORRUPTED	index_corrupted

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