I’m having this strange problem using PostgreSQL 9.3 with tables that are created using qoutes. For instance, if I create a table using qoutes:
create table "TEST" ("Col1" bigint);
the table is properly created and I can see that the quotes are preserved when view it in the SQL pane of pgAdminIII. But when I query the DB to find the list of all available tables (using the below query), I see that the result does not contain quotes around the table name.
select table_schema, table_name from information_schema.tables where not table_schema='pg_catalog' and not table_schema='information_schema';
Since the table was created with quotes, I can’t use the table name returned from the above query directly since it is unquoted and throws the error in posted in the title.
I could try surrounding the table names with quotes in all queries but I’m not sure if it’ll work all the time. I’m looking for a way to get the list of table names that are quoted with quotes in the result.
I’m having the same issue with column names as well but I’m hoping that if I can find a solution to the table names issue, a similar solution will work for column names as well.
PostgreSQL error 42P01 actually makes users dumbfounded, especially the newbies.
Usually, this error occurs due to an undefined table in newly created databases.
That’s why at Bobcares, we often get requests to fix PostgreSQL errors, as a part of our Server Management Services.
Today, let’s have a look into the PostgreSQL error 42P01 and see how our Support Engineers fix it.
What is PostgreSQL error 42P01?
PostgreSQL has a well-defined error code description. This helps in identifying the reason for the error.
Today, let’s discuss in detail about PostgreSQL error 42P01. The typical error code in PostgreSQL appears as:
ERROR: relation "[Table name]" does not exist
SQL state:42P01
Here the 42P01 denotes an undefined table.
So, the code description clearly specifies the basic reason for the error.
But what does an undefined table means?
Let’s discuss it in detail.
Causes and fixes for the PostgreSQL error 42P01
Customer query on undefined tables of a database often shows up the 42P01 error.
Now let’s see a few situations when our customers get the 42P01 error. We will also see how our Support Engineers fix this error.
1. Improper database setup
Newbies to Postgres often make mistakes while creating a new database. Mostly, this improper setup ends up in a 42P01 error.
In such situations, our Support Team guides them for easy database setup.
Firstly, we create a new database. Next, we create a new schema and role. We give proper privileges to tables.
Postgres also allows users to ALTER DEFAULT PRIVILEGES.
2. Unquoted identifiers
Some customers create tables with mixed-case letters.
Usually, the unquoted identifiers are folded into lowercase. So, when the customer queries the table name with the mixed case it shows 42P01 error.
The happens as the PostgreSQL has saved the table name in lower case.
To resolve this error, our Support Engineers give mixed case table name in quotes. Also, we highly recommend to NOT use quotes in database names. Thus it would make PostgreSQL behave non-case sensitive.
3. Database query on a non-public schema
Similarly, the PostgreSQL 42P01 error occurs when a user queries a non-public schema.
Usually, this error occurs if the user is unaware of the proper Postgres database query.
For instance, the customer query on table name ‘pgtable‘ was:
SELECT * FROM pgtable
This query is totally correct in case of a public schema. But, for a non-public schema ‘xx’ the query must be:
SELECT * FROM "xx"."pgtable"
Hence, our Support Engineers ensure that the query uses the correct schema name.
[Still having trouble in fixing PostgreSQL errors? – We’ll fix it for you.]
Conclusion
In short, PostgreSQL error 42P01 denotes the database query is on an undefined table. This error occurs due to improper database setup, unidentified table name, and so on. Today, we saw how our Support Engineers fix the undefined table error in Postgres.
PREVENT YOUR SERVER FROM CRASHING!
Never again lose customers to poor server speed! Let us help you.
Our server experts will monitor & maintain your server 24/7 so that it remains lightning fast and secure.
GET STARTED
var google_conversion_label = «owonCMyG5nEQ0aD71QM»;
What you had originally was a correct syntax — for tables, not for schemas. As you did not have a table (dubbed ‘relation’ in the error message), it threw the not-found error.
I see you’ve already noticed this — I believe there is no better way of learning than to fix our own mistakes
But there is something more. What you are doing above is too much on one hand, and not enough on the other.
Running the script, you
- create a schema
- create a role
- grant
SELECT
on all tables in the schema created in (1.) to this new role_ - and, finally, grant all privileges (
CREATE
andUSAGE
) on the new schema to the new role
The problem lies within point (3.) You granted privileges on tables in replays
— but there are no tables in there! There might be some in the future, but at this point the schema is completely empty. This way, the GRANT
in (3.) does nothing — this way you are doing too much.
But what about the future tables?
There is a command for covering them: ALTER DEFAULT PRIVILEGES
. It applies not only to tables, but:
Currently [as of 9.4], only the privileges for tables (including views and foreign tables), sequences, functions, and types (including domains) can be altered.
There is one important limitation, too:
You can change default privileges only for objects that will be created by yourself or by roles that you are a member of.
This means that a table created by alice
, who is neither you nor a role than you are a member of (can be checked, for example, by using du
in psql
), will not take the prescribed access rights. The optional FOR ROLE
clause is used for specifying the ‘table creator’ role you are a member of. In many cases, this implies it is a good idea to create all database objects using the same role — like mydatabase_owner
.
A small example to show this at work:
CREATE ROLE test_owner; -- cannot log in
CREATE SCHEMA replays AUTHORIZATION test_owner;
GRANT ALL ON SCHEMA replays TO test_owner;
SET ROLE TO test_owner; -- here we change the context,
-- so that the next statement is issued as the owner role
ALTER DEFAULT PRIVILEGES IN SCHEMA replays GRANT SELECT ON TABLES TO alice;
CREATE TABLE replays.replayer (r_id serial PRIMARY KEY);
RESET ROLE; -- changing the context back to the original role
CREATE TABLE replays.replay_event (re_id serial PRIMARY KEY);
-- and now compare the two
dp replays.replayer
Access privileges
Schema │ Name │ Type │ Access privileges │ Column access privileges
─────────┼──────────┼───────┼───────────────────────────────┼──────────────────────────
replays │ replayer │ table │ alice=r/test_owner ↵│
│ │ │ test_owner=arwdDxt/test_owner │
dp replays.replay_event
Access privileges
Schema │ Name │ Type │ Access privileges │ Column access privileges
─────────┼──────────────┼───────┼───────────────────┼──────────────────────────
replays │ replay_event │ table │ │
As you can see, alice
has no explicit rights on the latter table. (In this case, she can still SELECT
from the table, being a member of the public
pseudorole, but I didn’t want to clutter the example by revoking the rights from public
.)
PostgreSQL error 42P01 actually makes users dumbfounded, especially the newbies.
Usually, this error occurs due to an undefined table in newly created databases.
That’s why at Bobcares, we often get requests to fix PostgreSQL errors, as a part of our Server Management Services.
Today, let’s have a look into the PostgreSQL error 42P01 and see how our Support Engineers fix it.
What is PostgreSQL error 42P01?
PostgreSQL has a well-defined error code description. This helps in identifying the reason for the error.
Today, let’s discuss in detail about PostgreSQL error 42P01. The typical error code in PostgreSQL appears as:
ERROR: relation "[Table name]" does not exist
SQL state:42P01
Here the 42P01 denotes an undefined table.
So, the code description clearly specifies the basic reason for the error.
But what does an undefined table means?
Let’s discuss it in detail.
Causes and fixes for the PostgreSQL error 42P01
Customer query on undefined tables of a database often shows up the 42P01 error.
Now let’s see a few situations when our customers get the 42P01 error. We will also see how our Support Engineers fix this error.
1. Improper database setup
Newbies to Postgres often make mistakes while creating a new database. Mostly, this improper setup ends up in a 42P01 error.
In such situations, our Support Team guides them for easy database setup.
Firstly, we create a new database. Next, we create a new schema and role. We give proper privileges to tables.
Postgres also allows users to ALTER DEFAULT PRIVILEGES.
2. Unquoted identifiers
Some customers create tables with mixed-case letters.
Usually, the unquoted identifiers are folded into lowercase. So, when the customer queries the table name with the mixed case it shows 42P01 error.
The happens as the PostgreSQL has saved the table name in lower case.
To resolve this error, our Support Engineers give mixed case table name in quotes. Also, we highly recommend to NOT use quotes in database names. Thus it would make PostgreSQL behave non-case sensitive.
3. Database query on a non-public schema
Similarly, the PostgreSQL 42P01 error occurs when a user queries a non-public schema.
Usually, this error occurs if the user is unaware of the proper Postgres database query.
For instance, the customer query on table name ‘pgtable‘ was:
SELECT * FROM pgtable
This query is totally correct in case of a public schema. But, for a non-public schema ‘xx’ the query must be:
SELECT * FROM "xx"."pgtable"
Hence, our Support Engineers ensure that the query uses the correct schema name.
[Still having trouble in fixing PostgreSQL errors? – We’ll fix it for you.]
Conclusion
In short, PostgreSQL error 42P01 denotes the database query is on an undefined table. This error occurs due to improper database setup, unidentified table name, and so on. Today, we saw how our Support Engineers fix the undefined table error in Postgres.
PREVENT YOUR SERVER FROM CRASHING!
Never again lose customers to poor server speed! Let us help you.
Our server experts will monitor & maintain your server 24/7 so that it remains lightning fast and secure.
GET STARTED
var google_conversion_label = «owonCMyG5nEQ0aD71QM»;
Содержание
- Easy fix for PostgreSQL error 42P01
- What is PostgreSQL error 42P01?
- Causes and fixes for the PostgreSQL error 42P01
- 1. Improper database setup
- 2. Unquoted identifiers
- 3. Database query on a non-public schema
- Conclusion
- Related posts:
- PREVENT YOUR SERVER FROM CRASHING!
- Postgresql sql error 42p01
- Submit correction
Easy fix for PostgreSQL error 42P01
by Keerthi PS | Sep 29, 2019
PostgreSQL error 42P01 actually makes users dumbfounded, especially the newbies.
Usually, this error occurs due to an undefined table in newly created databases.
That’s why at Bobcares, we often get requests to fix PostgreSQL errors, as a part of our Server Management Services.
Today, let’s have a look into the PostgreSQL error 42P01 and see how our Support Engineers fix it.
What is PostgreSQL error 42P01?
PostgreSQL has a well-defined error code description. This helps in identifying the reason for the error.
Today, let’s discuss in detail about PostgreSQL error 42P01. The typical error code in PostgreSQL appears as:
Here the 42P01 denotes an undefined table.
So, the code description clearly specifies the basic reason for the error.
But what does an undefined table means?
Let’s discuss it in detail.
Causes and fixes for the PostgreSQL error 42P01
Customer query on undefined tables of a database often shows up the 42P01 error.
Now let’s see a few situations when our customers get the 42P01 error. We will also see how our Support Engineers fix this error.
1. Improper database setup
Newbies to Postgres often make mistakes while creating a new database. Mostly, this improper setup ends up in a 42P01 error.
In such situations, our Support Team guides them for easy database setup.
Firstly, we create a new database. Next, we create a new schema and role. We give proper privileges to tables.
Postgres also allows users to ALTER DEFAULT PRIVILEGES.
2. Unquoted identifiers
Some customers create tables with mixed-case letters.
Usually, the unquoted identifiers are folded into lowercase. So, when the customer queries the table name with the mixed case it shows 42P01 error.
The happens as the PostgreSQL has saved the table name in lower case.
To resolve this error, our Support Engineers give mixed case table name in quotes. Also, we highly recommend to NOT use quotes in database names. Thus it would make PostgreSQL behave non-case sensitive.
3. Database query on a non-public schema
Similarly, the PostgreSQL 42P01 error occurs when a user queries a non-public schema.
Usually, this error occurs if the user is unaware of the proper Postgres database query.
For instance, the customer query on table name ‘pgtable‘ was:
This query is totally correct in case of a public schema. But, for a non-public schema ‘xx’ the query must be:
Hence, our Support Engineers ensure that the query uses the correct schema name.
[Still having trouble in fixing PostgreSQL errors? – We’ll fix it for you.]
Conclusion
In short, PostgreSQL error 42P01 denotes the database query is on an undefined table. This error occurs due to improper database setup, unidentified table name, and so on. Today, we saw how our Support Engineers fix the undefined table error in Postgres.
PREVENT YOUR SERVER FROM CRASHING!
Never again lose customers to poor server speed! Let us help you.
Our server experts will monitor & maintain your server 24/7 so that it remains lightning fast and secure.
Источник
Postgresql sql error 42p01
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 might still be able to infer what to do from the error class.
Table A.1 lists all the error codes defined in PostgreSQL 15.0. (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 symbol shown in the column “ Condition Name ” is the condition name to use in PL/pgSQL . 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.)
For some types of errors, the server reports the name of a database object (a table, table column, data type, or constraint) associated with the error; for example, the name of the unique constraint that caused a unique_violation error. Such names are supplied in separate fields of the error report message so that applications need not try to extract them from the possibly-localized human-readable text of the message. As of PostgreSQL 9.3, complete coverage for this feature exists only for errors in SQLSTATE class 23 (integrity constraint violation), but this is likely to be expanded in future.
Table A.1. PostgreSQL Error Codes
Error Code | 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 |
22013 | invalid_preceding_or_following_size |
2201B | invalid_regular_expression |
2201W | invalid_row_count_in_limit_clause |
2201X | invalid_row_count_in_result_offset_clause |
2202H | invalid_tablesample_argument |
2202G | invalid_tablesample_repeat |
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 |
2200H | sequence_generator_limit_exceeded |
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 |
22030 | duplicate_json_object_key_value |
22031 | invalid_argument_for_sql_json_datetime_function |
22032 | invalid_json_text |
22033 | invalid_sql_json_subscript |
22034 | more_than_one_sql_json_item |
22035 | no_sql_json_item |
22036 | non_numeric_sql_json_item |
22037 | non_unique_keys_in_a_json_object |
22038 | singleton_sql_json_item_required |
22039 | sql_json_array_not_found |
2203A | sql_json_member_not_found |
2203B | sql_json_number_not_found |
2203C | sql_json_object_not_found |
2203D | too_many_json_array_elements |
2203E | too_many_json_object_members |
2203F | sql_json_scalar_required |
2203G | sql_json_item_cannot_be_cast_to_target_type |
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 |
25P03 | idle_in_transaction_session_timeout |
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 |
39P03 | event_trigger_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 |
428C9 | generated_always |
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 |
55P04 | unsafe_new_enum_value_usage |
Class 57 — Operator Intervention | |
57000 | operator_intervention |
57014 | query_canceled |
57P01 | admin_shutdown |
57P02 | crash_shutdown |
57P03 | cannot_connect_now |
57P04 | database_dropped |
57P05 | idle_session_timeout |
Class 58 — System Error (errors external to PostgreSQL itself) | |
58000 | system_error |
58030 | io_error |
58P01 | undefined_file |
58P02 | duplicate_file |
Class 72 — Snapshot Failure | |
72000 | snapshot_too_old |
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 |
P0004 | assert_failure |
Class XX — Internal Error | |
XX000 | internal_error |
XX001 | data_corrupted |
XX002 | index_corrupted |
Prev | Up | Next |
Part VIII. Appendixes | Home | Appendix B. Date/Time Support |
Submit correction
If you see anything in the documentation that is not correct, does not match your experience with the particular feature or requires further clarification, please use this form to report a documentation issue.
Источник
- Remove From My Forums
-
Question
-
public bool girisKontrol(string user, string pass) {string sunucu, port, kullaniciadi, sifre, veritabani; sunucu = "localhost"; port = "5432"; kullaniciadi = "postgres"; sifre = "tellioglu"; veritabani = "postgres"; string baglantimetni = string.Format("Server ={0};Port ={1};User ID = {2};Password = {3};Database={4};", sunucu, port, kullaniciadi, sifre, veritabani); var baglanti = new NpgsqlConnection(); baglanti.ConnectionString = baglantimetni; var cmd = new NpgsqlCommand(); cmd.Connection = baglanti; cmd.CommandText = "select * from kullanicigiris where Kullaniciadi = @Kullanici and sifre = @sifre";//kullanicigiris tablonun adi , Kullaniciadi sütünun adı,sifre sütunun adi cmd.Parameters.AddWithValue("@Kullanici", user); cmd.Parameters.AddWithValue("@sifre", pass); cmd.Connection.Open(); var reader = cmd.ExecuteReader(); var sonuc = reader.HasRows; reader.Close(); reader.Dispose(); cmd.Connection.Close(); cmd.Connection.Dispose(); cmd.Dispose(); return sonuc; }
i am using postgreSQL database . executereader(); giving ‘ERROR: 42P01: relation does not exist’ problem. is sql line wrong i dont know please help me
Answers
-
From the code sinppet, I don’t think it’s the SQL line error. In C#, we should use the SQL parameters like yours.
But for postgreSQL, I would suggest you to try the following code to see if it works.
cmd.CommandText = "select * from kullanicigiris where Kullaniciadi = :Kullanici and sifre = :sifre" cmd.Parameters.AddWithValue(":Kullanici", user); cmd.Parameters.AddWithValue(":sifre", pass);
And there is a category for postgreSQL support query for your reference:
http://www.postgresql.org/support/
Hope it hleps.
Best Regards,
Rocky Yue[MSFT]
MSDN Community Support | Feedback to us
-
Marked as answer by
Wednesday, May 2, 2012 2:51 AM
-
Marked as answer by
I am trying to write a trigger that stores previous versions of a row in a table named audit_tablename given a table named tablename.
Here is the the code…
CREATE OR REPLACE FUNCTION process_ui_audit()
RETURNS TRIGGER AS
$$
DECLARE
audit_table_name text := TG_TABLE_SCHEMA || '.audit_' || TG_TABLE_NAME;
audit_table_schema text := TG_TABLE_SCHEMA;
BEGIN
IF (TG_OP = 'UPDATE')
THEN
EXECUTE FORMAT('INSERT INTO %1$I SELECT NEXTVAL(''$1.hibernate_sequence''),now(), user, ($1).*',
audit_table_name, audit_table_schema)
USING OLD;
NEW.version = OLD.version + 1;
RETURN NEW;
ELSIF (TG_OP = 'INSERT')
THEN
NEW.version = 1;
RETURN NEW;
END IF;
END;
When I try to update a row the trigger runs and I get errors like this….
[42P01] ERROR: relation «webapp.audit_portal_user» does not exist
Where: PL/pgSQL function webapp.process_ui_audit() line 13 at EXECUTE
I am wonderin am I formatting table names incorrectly or something? The table name webapp.audit_portal_user definetly exists.
asked Jun 1, 2020 at 2:56
benstpierrebenstpierre
32.6k50 gold badges171 silver badges288 bronze badges
2
It works without specifying schema name.
Here is a simplified example:
create table portal_user(
uid int,
uname text
);
CREATE TABLE
create table audit_portal_user(
uid int,
uname text,
who text,
what text,
ts timestamp
);
CREATE TABLE
create or replace function process_ui_audit()
returns trigger as
$$
declare
audit_table_name text := 'audit_' || tg_table_name;
begin
if (tg_op = 'UPDATE')
then
execute format('insert into %I values($1.*, user, %L, now())',
audit_table_name, 'UPDATE') using new;
return null;
end if;
end;
$$
language plpgsql;
CREATE FUNCTION
create trigger audit
after update on portal_user
for each row
execute function process_ui_audit();
CREATE TRIGGER
insert into portal_user values(12, 'titi');
INSERT 0 1
select * from portal_user;
uid | uname
-----+-------
12 | titi
(1 row)
update portal_user set uname='toto' where uid=12;
UPDATE 1
select * from portal_user;
uid | uname
-----+-------
12 | toto
(1 row)
select * from audit_portal_user;
uid | uname | who | what | ts
-----+-------+----------+--------+----------------------------
12 | toto | postgres | UPDATE | 2020-06-01 10:20:36.549257
(1 row)
answered Jun 1, 2020 at 8:23