What's PostgreSQL Error Codes

PostgreSQL服务器发出的所有消息都分配了五个字符的错误代码， 这些代码遵循 SQL 的"SQLSTATE"代码的约定。 需要知道发生了什么错误条件的应用程序通常应该检测错误代码，而不是查看文本错误消息。 这些错误代码不太可能随着PostgreSQL的版本的更新而修改， 并且一般也不会随着错误消息的本地化而发生修改。请注意有些(但不是全部) PostgreSQL生成的错误代码是由 SQL 标准定义的； 有些标准里并没有定义的错误条件会被发明或者是从其它数据库借过来。

根据标准，错误代码的头两个字符表示错误类别，而后三个字符表示在该类别内特定的条件。 因此，那些不能识别特定错误代码的应用仍然可以从错误类别中推断要做什么。

表 A-1里面列出了PostgreSQL 9.3.1 定义的所有错误代码(有些实际上目前并没有使用，但是 SQL 标准定义了)。错误类别也列出在此。 对于每个错误类别都有个"标准"的错误代码，它的最后三个字符是000。 这种代码只用于那些落在该类别内，但是没有赋予任何更准确的代码的错误条件。

"条件名"列显示的标志是在PL/pgSQL里面使用的条件名。 条件名大小写无关。（请注意PL/pgSQL并不识别警告， 这一点和错误、条件名正相反；那些是 00，01，02 类别。）

对于某些类型的错误，服务器报告与错误相关的数据库对象的名称（一个表，表字段，数据类型， 或者约束）；例如，唯一约束的名字导致了一个unique_violation错误。 类似的名字在单独的错误报告字段信息中提供， 这样应用程序就不用尝试去从可本地化 可读的文本消息中提取它们。 自PostgreSQL 9.3起，对这个特性的完全覆盖只存在于SQLSTATE类23的错误中（违反完整性约束）， 但这个将来可能会被扩展。

PostgreSQL Error code List 错误代码列表

错误代码 Error Codes	条件名 Condition Name
Class 00 — Successful Completion
00000	successful_completion
Class 01 — Warning
01000	warning
0100C	dynamic_result_sets_returned
01008	implicit_zero_bit_padding
01003	null_value_eliminated_in_set_function
01007	privilege_not_granted
01006	privilege_not_revoked
01004	string_data_right_truncation
01P01	deprecated_feature
Class 02 — No Data (this is also a warning class per the SQL standard)
02000	no_data
02001	no_additional_dynamic_result_sets_returned
Class 03 — SQL Statement Not Yet Complete
03000	sql_statement_not_yet_complete
Class 08 — Connection Exception
08000	connection_exception
08003	connection_does_not_exist
08006	connection_failure
08001	sqlclient_unable_to_establish_sqlconnection
08004	sqlserver_rejected_establishment_of_sqlconnection
08007	transaction_resolution_unknown
08P01	protocol_violation
Class 09 — Triggered Action Exception
09000	triggered_action_exception
Class 0A — Feature Not Supported
0A000	feature_not_supported
Class 0B — Invalid Transaction Initiation
0B000	invalid_transaction_initiation
Class 0F — Locator Exception
0F000	locator_exception
0F001	invalid_locator_specification
Class 0L — Invalid Grantor
0L000	invalid_grantor
0LP01	invalid_grant_operation
Class 0P — Invalid Role Specification
0P000	invalid_role_specification
Class 0Z — Diagnostics Exception
0Z000	diagnostics_exception
0Z002	stacked_diagnostics_accessed_without_active_handler
Class 20 — Case Not Found
20000	case_not_found
Class 21 — Cardinality Violation
21000	cardinality_violation
Class 22 — Data Exception
22000	data_exception
2202E	array_subscript_error
22021	character_not_in_repertoire
22008	datetime_field_overflow
22012	division_by_zero
22005	error_in_assignment
2200B	escape_character_conflict
22022	indicator_overflow
22015	interval_field_overflow
2201E	invalid_argument_for_logarithm
22014	invalid_argument_for_ntile_function
22016	invalid_argument_for_nth_value_function
2201F	invalid_argument_for_power_function
2201G	invalid_argument_for_width_bucket_function
22018	invalid_character_value_for_cast
22007	invalid_datetime_format
22019	invalid_escape_character
2200D	invalid_escape_octet
22025	invalid_escape_sequence
22P06	nonstandard_use_of_escape_character
22010	invalid_indicator_parameter_value
22023	invalid_parameter_value
2201B	invalid_regular_expression
2201W	invalid_row_count_in_limit_clause
2201X	invalid_row_count_in_result_offset_clause
22009	invalid_time_zone_displacement_value
2200C	invalid_use_of_escape_character
2200G	most_specific_type_mismatch
22004	null_value_not_allowed
22002	null_value_no_indicator_parameter
22003	numeric_value_out_of_range
22026	string_data_length_mismatch
22001	string_data_right_truncation
22011	substring_error
22027	trim_error
22024	unterminated_c_string
2200F	zero_length_character_string
22P01	floating_point_exception
22P02	invalid_text_representation
22P03	invalid_binary_representation
22P04	bad_copy_file_format
22P05	untranslatable_character
2200L	not_an_xml_document
2200M	invalid_xml_document
2200N	invalid_xml_content
2200S	invalid_xml_comment
2200T	invalid_xml_processing_instruction
Class 23 — Integrity Constraint Violation
23000	integrity_constraint_violation
23001	restrict_violation
23502	not_null_violation
23503	foreign_key_violation
23505	unique_violation
23514	check_violation
23P01	exclusion_violation
Class 24 — Invalid Cursor State
24000	invalid_cursor_state
Class 25 — Invalid Transaction State
25000	invalid_transaction_state
25001	active_sql_transaction
25002	branch_transaction_already_active
25008	held_cursor_requires_same_isolation_level
25003	inappropriate_access_mode_for_branch_transaction
25004	inappropriate_isolation_level_for_branch_transaction
25005	no_active_sql_transaction_for_branch_transaction
25006	read_only_sql_transaction
25007	schema_and_data_statement_mixing_not_supported
25P01	no_active_sql_transaction
25P02	in_failed_sql_transaction
Class 26 — Invalid SQL Statement Name
26000	invalid_sql_statement_name
Class 27 — Triggered Data Change Violation
27000	triggered_data_change_violation
Class 28 — Invalid Authorization Specification
28000	invalid_authorization_specification
28P01	invalid_password
Class 2B — Dependent Privilege Descriptors Still Exist
2B000	dependent_privilege_descriptors_still_exist
2BP01	dependent_objects_still_exist
Class 2D — Invalid Transaction Termination
2D000	invalid_transaction_termination
Class 2F — SQL Routine Exception
2F000	sql_routine_exception
2F005	function_executed_no_return_statement
2F002	modifying_sql_data_not_permitted
2F003	prohibited_sql_statement_attempted
2F004	reading_sql_data_not_permitted
Class 34 — Invalid Cursor Name
34000	invalid_cursor_name
Class 38 — External Routine Exception
38000	external_routine_exception
38001	containing_sql_not_permitted
38002	modifying_sql_data_not_permitted
38003	prohibited_sql_statement_attempted
38004	reading_sql_data_not_permitted
Class 39 — External Routine Invocation Exception
39000	external_routine_invocation_exception
39001	invalid_sqlstate_returned
39004	null_value_not_allowed
39P01	trigger_protocol_violated
39P02	srf_protocol_violated
Class 3B — Savepoint Exception
3B000	savepoint_exception
3B001	invalid_savepoint_specification
Class 3D — Invalid Catalog Name
3D000	invalid_catalog_name
Class 3F — Invalid Schema Name
3F000	invalid_schema_name
Class 40 — Transaction Rollback
40000	transaction_rollback
40002	transaction_integrity_constraint_violation
40001	serialization_failure
40003	statement_completion_unknown
40P01	deadlock_detected
Class 42 — Syntax Error or Access Rule Violation
42000	syntax_error_or_access_rule_violation
42601	syntax_error
42501	insufficient_privilege
42846	cannot_coerce
42803	grouping_error
42P20	windowing_error
42P19	invalid_recursion
42830	invalid_foreign_key
42602	invalid_name
42622	name_too_long
42939	reserved_name
42804	datatype_mismatch
42P18	indeterminate_datatype
42P21	collation_mismatch
42P22	indeterminate_collation
42809	wrong_object_type
42703	undefined_column
42883	undefined_function
42P01	undefined_table
42P02	undefined_parameter
42704	undefined_object
42701	duplicate_column
42P03	duplicate_cursor
42P04	duplicate_database
42723	duplicate_function
42P05	duplicate_prepared_statement
42P06	duplicate_schema
42P07	duplicate_table
42712	duplicate_alias
42710	duplicate_object
42702	ambiguous_column
42725	ambiguous_function
42P08	ambiguous_parameter
42P09	ambiguous_alias
42P10	invalid_column_reference
42611	invalid_column_definition
42P11	invalid_cursor_definition
42P12	invalid_database_definition
42P13	invalid_function_definition
42P14	invalid_prepared_statement_definition
42P15	invalid_schema_definition
42P16	invalid_table_definition
42P17	invalid_object_definition
Class 44 — WITH CHECK OPTION Violation
44000	with_check_option_violation
Class 53 — Insufficient Resources
53000	insufficient_resources
53100	disk_full
53200	out_of_memory
53300	too_many_connections
53400	configuration_limit_exceeded
Class 54 — Program Limit Exceeded
54000	program_limit_exceeded
54001	statement_too_complex
54011	too_many_columns
54023	too_many_arguments
Class 55 — Object Not In Prerequisite State
55000	object_not_in_prerequisite_state
55006	object_in_use
55P02	cant_change_runtime_param
55P03	lock_not_available
Class 57 — Operator Intervention
57000	operator_intervention
57014	query_canceled
57P01	admin_shutdown
57P02	crash_shutdown
57P03	cannot_connect_now
57P04	database_dropped
Class 58 — System Error (errors external to PostgreSQL itself)
58000	system_error
58030	io_error
58P01	undefined_file
58P02	duplicate_file
Class F0 — Configuration File Error
F0000	config_file_error
F0001	lock_file_exists
Class HV — Foreign Data Wrapper Error (SQL/MED)
HV000	fdw_error
HV005	fdw_column_name_not_found
HV002	fdw_dynamic_parameter_value_needed
HV010	fdw_function_sequence_error
HV021	fdw_inconsistent_descriptor_information
HV024	fdw_invalid_attribute_value
HV007	fdw_invalid_column_name
HV008	fdw_invalid_column_number
HV004	fdw_invalid_data_type
HV006	fdw_invalid_data_type_descriptors
HV091	fdw_invalid_descriptor_field_identifier
HV00B	fdw_invalid_handle
HV00C	fdw_invalid_option_index
HV00D	fdw_invalid_option_name
HV090	fdw_invalid_string_length_or_buffer_length
HV00A	fdw_invalid_string_format
HV009	fdw_invalid_use_of_null_pointer
HV014	fdw_too_many_handles
HV001	fdw_out_of_memory
HV00P	fdw_no_schemas
HV00J	fdw_option_name_not_found
HV00K	fdw_reply_handle
HV00Q	fdw_schema_not_found
HV00R	fdw_table_not_found
HV00L	fdw_unable_to_create_execution
HV00M	fdw_unable_to_create_reply
HV00N	fdw_unable_to_establish_connection
Class P0 — PL/pgSQL Error
P0000	plpgsql_error
P0001	raise_exception
P0002	no_data_found
P0003	too_many_rows
Class XX — Internal Error
XX000	internal_error
XX001	data_corrupted
XX002	index_corrupted