supports_unique_constraints?

• Class methods (19)
• build_read_query_regexp
• database_exists?
• dbconsole
• extended_type_map
• extract_limit
• extract_precision
• extract_scale
• find_cmd_and_exec
• initialize_type_map
• new
• quoted_column_names (<= v7.0.0)
• quoted_table_names (<= v7.0.0)
• register_class_with_limit
• register_class_with_precision
• type_cast_config_to_boolean
• type_cast_config_to_integer
• validate_default_timezone
• valid_type? (>= v8.1.1)
• visitor_for (<= v3.1.0)
• Instance methods (191)
• active?
• active_threadsafe? (<= v4.1.8)
• adapter_name
• add_enum_value
• advisory_locks_enabled?
• all_foreign_keys_valid?
• allow_preconnect= (>= v8.1.1)
• any_raw_connection
• arel_visitor
• async_enabled?
• attempt_configure_connection (>= v7.2.3)
• backoff
• build_insert_sql
• build_result
• build_statement_pool
• can_perform_case_insensitiv...
• case_insensitive_comparison
• case_sensitive_comparison
• case_sensitive_modifier (<= v4.2.9)
• check_all_foreign_keys_valid!
• check_if_write_query
• check_version
• clean!
• clear_cache!
• close
• collector
• column_for
• column_for_attribute
• column_name_for_operation (<= v6.0.0)
• column_name_from_arel_node (<= v5.2.3)
• columns (<= v5.1.7)
• combine_bind_parameters (<= v5.1.7)
• configure_connection
• connect!
• connected? (>= v7.2.3)
• connection_age (>= v8.1.1)
• connection_class
• connection_descriptor (>= v8.1.1)
• connection_klass (<= v6.1.7.7)
• connection_retries
• create_enum
• create_savepoint (<= v4.2.9)
• create_virtual_table (>= v8.0.0)
• current_savepoint_name (<= v4.2.9)
• database_exists?
• database_version
• decrement_open_transactions (<= v4.0.2)
• default_index_type?
• default_prepared_statements
• default_timezone
• default_uniqueness_comparison
• disable_extension
• disable_referential_integrity
• discard!
• disconnect!
• drop_enum
• drop_virtual_table (>= v8.0.0)
• enable_extension
• ensure_writes_are_allowed (>= v8.1.1)
• expire
• extended_type_map_key
• extensions
• extract_limit (<= v6.1.7.7)
• extract_precision (<= v6.1.7.7)
• extract_scale (<= v6.1.7.7)
• field_ordered_value (<= v7.0.0)
• force_retirement (>= v8.1.1)
• format_log_entry (<= v2.3.8)
• get_advisory_lock
• get_database_version
• ids_in_list_limit (<= v3.0.9)
• increment_open_transactions (<= v4.0.2)
• index_algorithms
• initialize_type_map (<= v6.1.7.7)
• inspect (>= v7.2.3)
• instrumenter (>= v8.1.1)
• internal_metadata
• invalidate_transaction
• lease
• lock_thread=
• log
• log_info (<= v2.3.8)
• lookup_cast_type (<= v5.1.7)
• max_jitter (>= v8.1.1)
• migration_context
• migrations_paths
• native_database_types (>= v8.1.1)
• new_column (<= v5.1.7)
• open_transactions (<= v4.1.8)
• pool=
• pool_jitter (>= v8.1.1)
• prefetch_primary_key?
• prepared_statements
• prepared_statements?
• prepared_statements_disable...
• preventing_writes?
• quote_table_name (<= v3.2.13)
• raw_connection
• reconnect
• reconnect!
• reconnect_can_restore_state?
• register_class_with_limit (<= v6.1.7.7)
• register_class_with_precision (<= v6.1.7.7)
• release_advisory_lock
• release_savepoint (<= v4.2.9)
• reload_type_map (<= v6.1.7.7)
• rename_enum
• rename_enum_value
• replica?
• requires_reloading?
• reset!
• reset_runtime (<= v2.3.8)
• retryable_connection_error?
• retryable_query_error?
• retry_deadline
• return_value_after_insert?
• role
• rollback_to_savepoint (<= v4.1.8)
• savepoint_errors_invalidate...
• schema_cache
• schema_cache= (<= v7.0.0)
• schema_creation (<= v5.1.7)
• schema_migration
• schema_version
• seconds_idle
• seconds_since_last_activity (>= v7.2.3)
• shard
• steal!
• substitute_at (<= v4.2.9)
• supports_advisory_locks?
• supports_bulk_alter?
• supports_check_constraints?
• supports_comments?
• supports_comments_in_create?
• supports_common_table_expre...
• supports_concurrent_connect...
• supports_count_distinct? (<= v4.1.8)
• supports_datetime_with_prec...
• supports_ddl_transactions?
• supports_deferrable_constra...
• supports_disabling_indexes? (>= v8.1.1)
• supports_exclusion_constrai...
• supports_explain?
• supports_expression_index?
• supports_extensions?
• supports_foreign_keys?
• supports_foreign_keys_in_cr... (<= v6.0.0)
• supports_foreign_tables?
• supports_indexes_in_create?
• supports_index_include?
• supports_index_sort_order?
• supports_insert_conflict_ta...
• supports_insert_on_duplicat...
• supports_insert_on_duplicat...
• supports_insert_returning?
• supports_json?
• supports_lazy_transactions?
• supports_materialized_views?
• supports_migrations? (<= v5.1.7)
• supports_multi_insert? (<= v6.0.0)
• supports_nulls_not_distinct?
• supports_optimizer_hints?
• supports_partial_index?
• supports_partitioned_indexes?
• supports_primary_key? (<= v5.1.7)
• supports_restart_db_transac...
• supports_savepoints?
• supports_transaction_isolat...
• supports_unique_constraints?
• supports_validate_constraints?
• supports_views?
• supports_virtual_columns?
• throw_away!
• transaction_joinable= (<= v4.0.2)
• transform_query
• translate_exception
• translate_exception_class
• type_map
• unprepared_statement
• unprepared_visitor (<= v4.1.8)
• use_metadata_table?
• valid_raw_connection
• valid_type?
• verified!
• verified? (>= v8.1.1)
• verify!
• verify_timeout (>= v7.2.3)
• warning_ignored?
• with_instrumenter
• without_prepared_statement?
• with_raw_connection

= private
= protected