method
supports_unique_constraints?
rails latest stable - Class:
ActiveRecord::ConnectionAdapters::AbstractAdapter
supports_unique_constraints?()public
Does this adapter support creating unique constraints?
- active?
- adapter_name
- add_enum_value
- advisory_locks_enabled?
- all_foreign_keys_valid?
- async_enabled?
- build_insert_sql
- case_insensitive_comparison
- case_sensitive_comparison
- check_all_foreign_keys_valid!
- check_if_write_query
- check_version
- clean!
- clear_cache!
- close
- connect!
- connection_class
- connection_retries
- create_enum
- database_exists?
- database_version
- default_index_type?
- default_timezone
- default_uniqueness_comparison
- disable_extension
- disable_referential_integrity
- discard!
- disconnect!
- drop_enum
- enable_extension
- expire
- extensions
- get_advisory_lock
- get_database_version
- index_algorithms
- internal_metadata
- lease
- lock_thread=
- migration_context
- migrations_paths
- pool=
- prefetch_primary_key?
- prepared_statements
- prepared_statements?
- prepared_statements_disabled_cache
- preventing_writes?
- raw_connection
- reconnect!
- release_advisory_lock
- rename_enum
- rename_enum_value
- replica?
- requires_reloading?
- reset!
- retry_deadline
- return_value_after_insert?
- role
- savepoint_errors_invalidate_transactions?
- schema_cache
- schema_migration
- schema_version
- seconds_idle
- shard
- steal!
- supports_advisory_locks?
- supports_bulk_alter?
- supports_check_constraints?
- supports_comments?
- supports_comments_in_create?
- supports_common_table_expressions?
- supports_concurrent_connections?
- supports_datetime_with_precision?
- supports_ddl_transactions?
- supports_deferrable_constraints?
- supports_exclusion_constraints?
- supports_explain?
- supports_expression_index?
- supports_extensions?
- supports_foreign_keys?
- supports_foreign_tables?
- supports_index_include?
- supports_index_sort_order?
- supports_indexes_in_create?
- supports_insert_conflict_target?
- supports_insert_on_duplicate_skip?
- supports_insert_on_duplicate_update?
- supports_insert_returning?
- supports_json?
- supports_lazy_transactions?
- supports_materialized_views?
- supports_nulls_not_distinct?
- supports_optimizer_hints?
- supports_partial_index?
- supports_partitioned_indexes?
- supports_restart_db_transaction?
- supports_savepoints?
- supports_transaction_isolation?
- supports_unique_constraints?
- supports_validate_constraints?
- supports_views?
- supports_virtual_columns?
- throw_away!
- unprepared_statement
- use_metadata_table?
- valid_type?
- verify!
- with_instrumenter
- build_read_query_regexp
- database_exists?
- dbconsole
- extended_type_map
- find_cmd_and_exec
- new
- register_class_with_precision
- type_cast_config_to_boolean
- type_cast_config_to_integer
- validate_default_timezone
-
extract_limit - extract_precision
- extract_scale
- initialize_type_map
- register_class_with_limit
- any_raw_connection
- arel_visitor
- backoff
- build_result
- build_statement_pool
- can_perform_case_insensitive_comparison_for?
- collector
- column_for
- column_for_attribute
- configure_connection
- default_prepared_statements
- extended_type_map_key
- invalidate_transaction
- log
- reconnect
- reconnect_can_restore_state?
- retryable_connection_error?
- retryable_query_error?
- transform_query
- translate_exception
- translate_exception_class
- type_map
- valid_raw_connection
- verified!
- warning_ignored?
- with_raw_connection
- without_prepared_statement?