Class: ActiveRecord::ConnectionAdapters::PostgreSQLAdapter
- Inherits:
-
AbstractAdapter
- Object
- AbstractAdapter
- ActiveRecord::ConnectionAdapters::PostgreSQLAdapter
- Includes:
- ActiveRecord::ConnectionAdapters::PostgreSQL::DatabaseStatements, ActiveRecord::ConnectionAdapters::PostgreSQL::Quoting, ActiveRecord::ConnectionAdapters::PostgreSQL::ReferentialIntegrity, ActiveRecord::ConnectionAdapters::PostgreSQL::SchemaStatements
- Defined in:
- lib/active_record/connection_adapters/postgresql_adapter.rb
Overview
The PostgreSQL adapter works with the native C (bitbucket.org/ged/ruby-pg) driver.
Options:
-
:host
- Defaults to a Unix-domain socket in /tmp. On machines without Unix-domain sockets, the default is to connect to localhost. -
:port
- Defaults to 5432. -
:username
- Defaults to be the same as the operating system name of the user running the application. -
:password
- Password to be used if the server demands password authentication. -
:database
- Defaults to be the same as the user name. -
:schema_search_path
- An optional schema search path for the connection given as a string of comma-separated schema names. This is backward-compatible with the:schema_order
option. -
:encoding
- An optional client encoding that is used in aSET client_encoding TO <encoding>
call on the connection. -
:min_messages
- An optional client min messages that is used in aSET client_min_messages TO <min_messages>
call on the connection. -
:variables
- An optional hash of additional parameters that will be used inSET SESSION key = val
calls on the connection. -
:insert_returning
- An optional boolean to control the use ofRETURNING
forINSERT
statements defaults to true.
Any further options are used as connection parameters to libpq. See www.postgresql.org/docs/current/static/libpq-connect.html for the list of parameters.
In addition, default connection parameters of libpq can be set per environment variables. See www.postgresql.org/docs/current/static/libpq-envars.html .
Defined Under Namespace
Classes: StatementPool
Constant Summary collapse
- ADAPTER_NAME =
"PostgreSQL"
- NATIVE_DATABASE_TYPES =
{ primary_key: "bigserial primary key", string: { name: "character varying" }, text: { name: "text" }, integer: { name: "integer", limit: 4 }, float: { name: "float" }, decimal: { name: "decimal" }, datetime: { name: "timestamp" }, time: { name: "time" }, date: { name: "date" }, daterange: { name: "daterange" }, numrange: { name: "numrange" }, tsrange: { name: "tsrange" }, tstzrange: { name: "tstzrange" }, int4range: { name: "int4range" }, int8range: { name: "int8range" }, binary: { name: "bytea" }, boolean: { name: "boolean" }, xml: { name: "xml" }, tsvector: { name: "tsvector" }, hstore: { name: "hstore" }, inet: { name: "inet" }, cidr: { name: "cidr" }, macaddr: { name: "macaddr" }, uuid: { name: "uuid" }, json: { name: "json" }, jsonb: { name: "jsonb" }, ltree: { name: "ltree" }, citext: { name: "citext" }, point: { name: "point" }, line: { name: "line" }, lseg: { name: "lseg" }, box: { name: "box" }, path: { name: "path" }, polygon: { name: "polygon" }, circle: { name: "circle" }, bit: { name: "bit" }, bit_varying: { name: "bit varying" }, money: { name: "money" }, interval: { name: "interval" }, oid: { name: "oid" }, }
- OID =
:nodoc:
PostgreSQL::OID
- OPERATION_ALIASES =
:nodoc:
{ # :nodoc: "maximum" => "max", "minimum" => "min", "average" => "avg", }
Constants included from ActiveRecord::ConnectionAdapters::PostgreSQL::DatabaseStatements
ActiveRecord::ConnectionAdapters::PostgreSQL::DatabaseStatements::BYTEA_COLUMN_TYPE_OID, ActiveRecord::ConnectionAdapters::PostgreSQL::DatabaseStatements::MONEY_COLUMN_TYPE_OID
Constants inherited from AbstractAdapter
Instance Attribute Summary
Attributes inherited from AbstractAdapter
#lock, #logger, #owner, #pool, #visitor
Attributes included from QueryCache
#query_cache, #query_cache_enabled
Attributes included from DatabaseStatements
Class Method Summary collapse
Instance Method Summary collapse
-
#active? ⇒ Boolean
Is this connection alive and ready for queries?.
-
#build_insert_sql(insert) ⇒ Object
:nodoc:.
-
#check_version ⇒ Object
:nodoc:.
-
#column_name_for_operation(operation, node) ⇒ Object
:nodoc:.
-
#create_unlogged_tables ⇒ Object
:singleton-method: PostgreSQL allows the creation of “unlogged” tables, which do not record data in the PostgreSQL Write-Ahead Log.
-
#default_index_type?(index) ⇒ Boolean
:nodoc:.
- #disable_extension(name) ⇒ Object
-
#discard! ⇒ Object
:nodoc:.
-
#disconnect! ⇒ Object
Disconnects from the database if already connected.
- #enable_extension(name) ⇒ Object
- #extension_available?(name) ⇒ Boolean
- #extension_enabled?(name) ⇒ Boolean
- #extensions ⇒ Object
-
#get_advisory_lock(lock_id) ⇒ Object
:nodoc:.
-
#get_database_version ⇒ Object
Returns the version of the connected PostgreSQL server.
- #index_algorithms ⇒ Object
-
#initialize(connection, logger, connection_parameters, config) ⇒ PostgreSQLAdapter
constructor
Initializes and connects a PostgreSQL adapter.
-
#max_identifier_length ⇒ Object
Returns the configured supported identifier length supported by PostgreSQL.
-
#native_database_types ⇒ Object
:nodoc:.
-
#reconnect! ⇒ Object
Close then reopen the connection.
-
#release_advisory_lock(lock_id) ⇒ Object
:nodoc:.
- #reset! ⇒ Object
-
#session_auth=(user) ⇒ Object
Set the authorized user for this session.
- #set_standard_conforming_strings ⇒ Object
- #supports_advisory_locks? ⇒ Boolean
- #supports_bulk_alter? ⇒ Boolean
- #supports_comments? ⇒ Boolean
- #supports_datetime_with_precision? ⇒ Boolean
- #supports_ddl_transactions? ⇒ Boolean
- #supports_explain? ⇒ Boolean
- #supports_expression_index? ⇒ Boolean
- #supports_extensions? ⇒ Boolean
- #supports_foreign_keys? ⇒ Boolean
- #supports_foreign_tables? ⇒ Boolean
- #supports_index_sort_order? ⇒ Boolean
- #supports_insert_on_conflict? ⇒ Boolean (also: #supports_insert_on_duplicate_skip?, #supports_insert_on_duplicate_update?, #supports_insert_conflict_target?)
- #supports_insert_returning? ⇒ Boolean
- #supports_json? ⇒ Boolean
- #supports_lazy_transactions? ⇒ Boolean
- #supports_materialized_views? ⇒ Boolean
- #supports_optimizer_hints? ⇒ Boolean
- #supports_partial_index? ⇒ Boolean
- #supports_pgcrypto_uuid? ⇒ Boolean
- #supports_ranges? ⇒ Boolean
- #supports_savepoints? ⇒ Boolean
- #supports_transaction_isolation? ⇒ Boolean
- #supports_validate_constraints? ⇒ Boolean
- #supports_views? ⇒ Boolean
- #use_insert_returning? ⇒ Boolean
Methods included from ActiveRecord::ConnectionAdapters::PostgreSQL::DatabaseStatements
#begin_db_transaction, #begin_isolated_db_transaction, #commit_db_transaction, #exec_delete, #exec_insert, #exec_query, #exec_rollback_db_transaction, #execute, #explain, #query, #result_as_array, #write_query?
Methods included from ActiveRecord::ConnectionAdapters::PostgreSQL::SchemaStatements
#add_column, #add_index, #change_column, #change_column_comment, #change_column_default, #change_column_null, #change_table_comment, #client_min_messages, #client_min_messages=, #collation, #columns_for_distinct, #create_database, #create_schema, #create_schema_dumper, #ctype, #current_database, #current_schema, #default_sequence_name, #drop_database, #drop_schema, #drop_table, #encoding, #foreign_keys, #foreign_table_exists?, #foreign_tables, #index_name_exists?, #indexes, #pk_and_sequence_for, #primary_keys, #recreate_database, #remove_index, #rename_column, #rename_index, #rename_table, #reset_pk_sequence!, #schema_exists?, #schema_names, #schema_search_path, #schema_search_path=, #serial_sequence, #set_pk_sequence!, #table_comment, #table_options, #type_to_sql, #update_table_definition, #validate_constraint, #validate_foreign_key
Methods included from ActiveRecord::ConnectionAdapters::PostgreSQL::ReferentialIntegrity
#disable_referential_integrity
Methods included from ActiveRecord::ConnectionAdapters::PostgreSQL::Quoting
#column_name_matcher, #column_name_with_order_matcher, #escape_bytea, #lookup_cast_type_from_column, #quote_column_name, #quote_default_expression, #quote_schema_name, #quote_string, #quote_table_name, #quote_table_name_for_assignment, #quoted_binary, #quoted_date, #unescape_bytea
Methods inherited from AbstractAdapter
#adapter_name, #advisory_locks_enabled?, build_read_query_regexp, #case_insensitive_comparison, #case_sensitive_comparison, #clear_cache!, #close, #database_version, #default_uniqueness_comparison, #disable_referential_integrity, #expire, #lease, #migration_context, #migrations_paths, #prefetch_primary_key?, #prepared_statements, #preventing_writes?, quoted_column_names, quoted_table_names, #raw_connection, #replica?, #requires_reloading?, #schema_cache, #schema_cache=, #schema_migration, #seconds_idle, #steal!, #supports_comments_in_create?, #supports_foreign_keys_in_create?, #supports_indexes_in_create?, #supports_multi_insert?, #supports_virtual_columns?, type_cast_config_to_boolean, type_cast_config_to_integer, #unprepared_statement, #valid_type?, #verify!
Methods included from Savepoints
#create_savepoint, #current_savepoint_name, #exec_rollback_to_savepoint, #release_savepoint
Methods included from QueryCache
#cache, #clear_query_cache, dirties_query_cache, #disable_query_cache!, #enable_query_cache!, included, #select_all, #uncached
Methods included from DatabaseLimits
#allowed_index_name_length, #column_name_length, #columns_per_multicolumn_index, #columns_per_table, #in_clause_length, #index_name_length, #indexes_per_table, #joins_per_query, #sql_query_length, #table_alias_length, #table_name_length
Methods included from Quoting
#column_name_matcher, #column_name_with_order_matcher, #lookup_cast_type_from_column, #quote, #quote_column_name, #quote_default_expression, #quote_string, #quote_table_name, #quote_table_name_for_assignment, #quoted_binary, #quoted_date, #quoted_false, #quoted_time, #quoted_true, #sanitize_as_sql_comment, #type_cast, #type_cast_from_column, #unquoted_false, #unquoted_true
Methods included from DatabaseStatements
#add_transaction_record, #begin_db_transaction, #begin_isolated_db_transaction, #cacheable_query, #commit_db_transaction, #default_sequence_name, #delete, #empty_insert_statement_value, #exec_delete, #exec_insert, #exec_query, #exec_rollback_db_transaction, #exec_update, #execute, #insert, #insert_fixture, #insert_fixtures_set, #query, #query_value, #query_values, #reset_sequence!, #reset_transaction, #rollback_db_transaction, #rollback_to_savepoint, #sanitize_limit, #select_all, #select_one, #select_rows, #select_value, #select_values, #to_sql, #transaction, #transaction_isolation_levels, #transaction_open?, #transaction_state, #truncate, #truncate_tables, #update, #with_yaml_fallback, #write_query?
Methods included from SchemaStatements
#add_column, #add_foreign_key, #add_index, #add_index_options, #add_reference, #add_timestamps, #assume_migrated_upto_version, #change_column, #change_column_comment, #change_column_default, #change_column_null, #change_table, #change_table_comment, #column_exists?, #columns, #columns_for_distinct, #create_join_table, #create_schema_dumper, #create_table, #data_source_exists?, #data_sources, #drop_join_table, #drop_table, #dump_schema_information, #foreign_key_column_for, #foreign_key_exists?, #foreign_key_options, #foreign_keys, #index_exists?, #index_name, #index_name_exists?, #indexes, #internal_string_options_for_primary_key, #options_include_default?, #primary_key, #remove_column, #remove_columns, #remove_foreign_key, #remove_index, #remove_reference, #remove_timestamps, #rename_column, #rename_index, #rename_table, #table_alias_for, #table_comment, #table_exists?, #table_options, #tables, #type_to_sql, #update_table_definition, #view_exists?, #views
Constructor Details
#initialize(connection, logger, connection_parameters, config) ⇒ PostgreSQLAdapter
Initializes and connects a PostgreSQL adapter.
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 243 def initialize(connection, logger, connection_parameters, config) super(connection, logger, config) @connection_parameters = connection_parameters # @local_tz is initialized as nil to avoid warnings when connect tries to use it @local_tz = nil @max_identifier_length = nil configure_connection add_pg_encoders add_pg_decoders @type_map = Type::HashLookupTypeMap.new initialize_type_map @local_tz = execute("SHOW TIME ZONE", "SCHEMA").first["TimeZone"] @use_insert_returning = @config.key?(:insert_returning) ? self.class.type_cast_config_to_boolean(@config[:insert_returning]) : true end |
Class Method Details
.database_exists?(config) ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 262 def self.database_exists?(config) !!ActiveRecord::Base.postgresql_connection(config) rescue ActiveRecord::NoDatabaseError false end |
Instance Method Details
#active? ⇒ Boolean
Is this connection alive and ready for queries?
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 269 def active? @lock.synchronize do @connection.query "SELECT 1" end true rescue PG::Error false end |
#build_insert_sql(insert) ⇒ Object
:nodoc:
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 441 def build_insert_sql(insert) # :nodoc: sql = +"INSERT #{insert.into} #{insert.values_list}" if insert.skip_duplicates? sql << " ON CONFLICT #{insert.conflict_target} DO NOTHING" elsif insert.update_duplicates? sql << " ON CONFLICT #{insert.conflict_target} DO UPDATE SET " sql << insert.updatable_columns.map { |column| "#{column}=excluded.#{column}" }.join(",") end sql << " RETURNING #{insert.returning}" if insert.returning sql end |
#check_version ⇒ Object
:nodoc:
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 455 def check_version # :nodoc: if database_version < 90300 raise "Your version of PostgreSQL (#{database_version}) is too old. Active Record supports PostgreSQL >= 9.3." end end |
#column_name_for_operation(operation, node) ⇒ Object
:nodoc:
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 421 def column_name_for_operation(operation, node) # :nodoc: OPERATION_ALIASES.fetch(operation) { operation.downcase } end |
#create_unlogged_tables ⇒ Object
:singleton-method: PostgreSQL allows the creation of “unlogged” tables, which do not record data in the PostgreSQL Write-Ahead Log. This can make the tables faster, but significantly increases the risk of data loss if the database crashes. As a result, this should not be used in production environments. If you would like all created tables to be unlogged in the test environment you can add the following line to your test.rb file:
ActiveRecord::ConnectionAdapters::PostgreSQLAdapter.create_unlogged_tables = true
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 99 class_attribute :create_unlogged_tables, default: false |
#default_index_type?(index) ⇒ Boolean
:nodoc:
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 437 def default_index_type?(index) # :nodoc: index.using == :btree || super end |
#disable_extension(name) ⇒ Object
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 388 def disable_extension(name) exec_query("DROP EXTENSION IF EXISTS \"#{name}\" CASCADE").tap { reload_type_map } end |
#discard! ⇒ Object
:nodoc:
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 310 def discard! # :nodoc: super @connection.socket_io.reopen(IO::NULL) rescue nil @connection = nil end |
#disconnect! ⇒ Object
Disconnects from the database if already connected. Otherwise, this method does nothing.
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 303 def disconnect! @lock.synchronize do super @connection.close rescue nil end end |
#enable_extension(name) ⇒ Object
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 382 def enable_extension(name) exec_query("CREATE EXTENSION IF NOT EXISTS \"#{name}\"").tap { reload_type_map } end |
#extension_available?(name) ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 394 def extension_available?(name) query_value("SELECT true FROM pg_available_extensions WHERE name = #{quote(name)}", "SCHEMA") end |
#extension_enabled?(name) ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 398 def extension_enabled?(name) query_value("SELECT installed_version IS NOT NULL FROM pg_available_extensions WHERE name = #{quote(name)}", "SCHEMA") end |
#extensions ⇒ Object
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 402 def extensions exec_query("SELECT extname FROM pg_extension", "SCHEMA").cast_values end |
#get_advisory_lock(lock_id) ⇒ Object
:nodoc:
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 368 def get_advisory_lock(lock_id) # :nodoc: unless lock_id.is_a?(Integer) && lock_id.bit_length <= 63 raise(ArgumentError, "PostgreSQL requires advisory lock ids to be a signed 64 bit integer") end query_value("SELECT pg_try_advisory_lock(#{lock_id})") end |
#get_database_version ⇒ Object
Returns the version of the connected PostgreSQL server.
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 432 def get_database_version # :nodoc: @connection.server_version end |
#index_algorithms ⇒ Object
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 210 def index_algorithms { concurrently: "CONCURRENTLY" } end |
#max_identifier_length ⇒ Object
Returns the configured supported identifier length supported by PostgreSQL
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 407 def max_identifier_length @max_identifier_length ||= query_value("SHOW max_identifier_length", "SCHEMA").to_i end |
#native_database_types ⇒ Object
:nodoc:
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 316 def native_database_types #:nodoc: NATIVE_DATABASE_TYPES end |
#reconnect! ⇒ Object
Close then reopen the connection.
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 279 def reconnect! @lock.synchronize do super @connection.reset configure_connection rescue PG::ConnectionBad connect end end |
#release_advisory_lock(lock_id) ⇒ Object
:nodoc:
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 375 def release_advisory_lock(lock_id) # :nodoc: unless lock_id.is_a?(Integer) && lock_id.bit_length <= 63 raise(ArgumentError, "PostgreSQL requires advisory lock ids to be a signed 64 bit integer") end query_value("SELECT pg_advisory_unlock(#{lock_id})") end |
#reset! ⇒ Object
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 289 def reset! @lock.synchronize do clear_cache! reset_transaction unless @connection.transaction_status == ::PG::PQTRANS_IDLE @connection.query "ROLLBACK" end @connection.query "DISCARD ALL" configure_connection end end |
#session_auth=(user) ⇒ Object
Set the authorized user for this session
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 412 def session_auth=(user) clear_cache! execute("SET SESSION AUTHORIZATION #{user}") end |
#set_standard_conforming_strings ⇒ Object
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 320 def set_standard_conforming_strings execute("SET standard_conforming_strings = on", "SCHEMA") end |
#supports_advisory_locks? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 328 def supports_advisory_locks? true end |
#supports_bulk_alter? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 151 def supports_bulk_alter? true end |
#supports_comments? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 191 def supports_comments? true end |
#supports_datetime_with_precision? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 183 def supports_datetime_with_precision? true end |
#supports_ddl_transactions? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 324 def supports_ddl_transactions? true end |
#supports_explain? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 332 def supports_explain? true end |
#supports_expression_index? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 163 def supports_expression_index? true end |
#supports_extensions? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 336 def supports_extensions? true end |
#supports_foreign_keys? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 171 def supports_foreign_keys? true end |
#supports_foreign_tables? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 349 def supports_foreign_tables? true end |
#supports_index_sort_order? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 155 def supports_index_sort_order? true end |
#supports_insert_on_conflict? ⇒ Boolean Also known as: supports_insert_on_duplicate_skip?, supports_insert_on_duplicate_update?, supports_insert_conflict_target?
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 203 def supports_insert_on_conflict? database_version >= 90500 end |
#supports_insert_returning? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 199 def supports_insert_returning? true end |
#supports_json? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 187 def supports_json? true end |
#supports_lazy_transactions? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 364 def supports_lazy_transactions? true end |
#supports_materialized_views? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 345 def supports_materialized_views? true end |
#supports_optimizer_hints? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 357 def supports_optimizer_hints? unless defined?(@has_pg_hint_plan) @has_pg_hint_plan = extension_available?("pg_hint_plan") end @has_pg_hint_plan end |
#supports_partial_index? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 159 def supports_partial_index? true end |
#supports_pgcrypto_uuid? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 353 def supports_pgcrypto_uuid? database_version >= 90400 end |
#supports_ranges? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 340 def supports_ranges? true end |
#supports_savepoints? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 195 def supports_savepoints? true end |
#supports_transaction_isolation? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 167 def supports_transaction_isolation? true end |
#supports_validate_constraints? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 175 def supports_validate_constraints? true end |
#supports_views? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 179 def supports_views? true end |
#use_insert_returning? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/postgresql_adapter.rb', line 417 def use_insert_returning? @use_insert_returning end |