File: 4.8.0.txt [sequel-4.20.0 Documentation]

### Home Classes Methods

### Files

- CHANGELOG
- MIT-LICENSE
- README.rdoc
- active_record.rdoc
- advanced_associations.rdoc
- association_basics.rdoc
- bin_sequel.rdoc
- cheat_sheet.rdoc
- code_order.rdoc
- core_extensions.rdoc
- dataset_basics.rdoc
- dataset_filtering.rdoc
- extensions.rdoc
- mass_assignment.rdoc
- migration.rdoc
- model_hooks.rdoc
- model_plugins.rdoc
- mssql_stored_procedures.rdoc
- object_model.rdoc
- opening_databases.rdoc
- postgresql.rdoc
- prepared_statements.rdoc
- querying.rdoc
- reflection.rdoc
- 1.0.txt
- 1.1.txt
- 1.3.txt
- 1.4.0.txt
- 1.5.0.txt
- 2.0.0.txt
- 2.1.0.txt
- 2.10.0.txt
- 2.11.0.txt
- 2.12.0.txt
- 2.2.0.txt
- 2.3.0.txt
- 2.4.0.txt
- 2.5.0.txt
- 2.6.0.txt
- 2.7.0.txt
- 2.8.0.txt
- 2.9.0.txt
- 3.0.0.txt
- 3.1.0.txt
- 3.10.0.txt
- 3.11.0.txt
- 3.12.0.txt
- 3.13.0.txt
- 3.14.0.txt
- 3.15.0.txt
- 3.16.0.txt
- 3.17.0.txt
- 3.18.0.txt
- 3.19.0.txt
- 3.2.0.txt
- 3.20.0.txt
- 3.21.0.txt
- 3.22.0.txt
- 3.23.0.txt
- 3.24.0.txt
- 3.25.0.txt
- 3.26.0.txt
- 3.27.0.txt
- 3.28.0.txt
- 3.29.0.txt
- 3.3.0.txt
- 3.30.0.txt
- 3.31.0.txt
- 3.32.0.txt
- 3.33.0.txt
- 3.34.0.txt
- 3.35.0.txt
- 3.36.0.txt
- 3.37.0.txt
- 3.38.0.txt
- 3.39.0.txt
- 3.4.0.txt
- 3.40.0.txt
- 3.41.0.txt
- 3.42.0.txt
- 3.43.0.txt
- 3.44.0.txt
- 3.45.0.txt
- 3.46.0.txt
- 3.47.0.txt
- 3.48.0.txt
- 3.5.0.txt
- 3.6.0.txt
- 3.7.0.txt
- 3.8.0.txt
- 3.9.0.txt
- 4.0.0.txt
- 4.1.0.txt
- 4.10.0.txt
- 4.11.0.txt
- 4.12.0.txt
- 4.13.0.txt
- 4.14.0.txt
- 4.15.0.txt
- 4.16.0.txt
- 4.17.0.txt
- 4.18.0.txt
- 4.19.0.txt
- 4.2.0.txt
- 4.20.0.txt
- 4.3.0.txt
- 4.4.0.txt
- 4.5.0.txt
- 4.6.0.txt
- 4.7.0.txt
- 4.8.0.txt
- 4.9.0.txt
- schema_modification.rdoc
- security.rdoc
- sharding.rdoc
- sql.rdoc
- testing.rdoc
- thread_safety.rdoc
- transactions.rdoc
- validations.rdoc
- virtual_rows.rdoc

### Class Index

Quicksearch

- Sequel
- Sequel::ADO
- Sequel::ADO::Access
- Sequel::ADO::Access::AdoSchema
- Sequel::ADO::Access::AdoSchema::Column
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- Sequel::ADO::Access::Dataset
- Sequel::ADO::Database
- Sequel::ADO::Dataset
- Sequel::ADO::MSSQL
- Sequel::ADO::MSSQL::DatabaseMethods
- Sequel::ADO::MSSQL::Dataset
- Sequel::ASTTransformer
- Sequel::Access
- Sequel::Access::DatabaseMethods
- Sequel::Access::DatasetMethods
- Sequel::AdapterNotFound
- Sequel::Amalgalite
- Sequel::Amalgalite::Database
- Sequel::Amalgalite::Dataset
- Sequel::Amalgalite::SequelTypeMap
- Sequel::ArbitraryServers
- Sequel::BasicObject
- Sequel::BeforeHookFailed
- Sequel::CheckConstraintViolation
- Sequel::ColumnsIntrospection
- Sequel::ConnectionPool
- Sequel::ConnectionPool::ClassMethods
- Sequel::ConnectionValidator
- Sequel::ConnectionValidator::Retry
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- Sequel::ConstraintValidations::Generator
- Sequel::ConstraintViolation
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- Sequel::Database::DatasetClass
- Sequel::Database::FromBlock
- Sequel::Database::ResetIdentifierMangling
- Sequel::Database::SplitAlterTable
- Sequel::DatabaseConnectionError
- Sequel::DatabaseDisconnectError
- Sequel::DatabaseError
- Sequel::DatabaseQuery
- Sequel::Dataset
- Sequel::Dataset::ArgumentMapper
- Sequel::Dataset::DatasetSourceAlias
- Sequel::Dataset::NullDataset
- Sequel::Dataset::Nullifiable
- Sequel::Dataset::Pagination
- Sequel::Dataset::PlaceholderLiteralizer
- Sequel::Dataset::PlaceholderLiteralizer::Argument
- Sequel::Dataset::PlaceholderLiteralizer::Recorder
- Sequel::Dataset::PreparedStatementMethods
- Sequel::Dataset::Query
- Sequel::Dataset::Replace
- Sequel::Dataset::RoundTimestamps
- Sequel::Dataset::SplitArrayNil
- Sequel::Dataset::StoredProcedureMethods
- Sequel::Dataset::StoredProcedures
- Sequel::Dataset::UnnumberedArgumentMapper
- Sequel::DatasetPagination
- Sequel::DatasetPrinter
- Sequel::DatasetQuery
- Sequel::Deprecation
- Sequel::EmptyArrayIgnoreNulls
- Sequel::EmulateOffsetWithReverseAndCount
- Sequel::EmulateOffsetWithRowNumber
- Sequel::Error
- Sequel::Error::AdapterNotFound
- Sequel::Error::InvalidOperation
- Sequel::Error::InvalidValue
- Sequel::Error::PoolTimeoutError
- Sequel::Error::Rollback
- Sequel::ErrorSQL
- Sequel::EvalInspect
- Sequel::Fdbsql
- Sequel::Fdbsql::Connection
- Sequel::Fdbsql::Database
- Sequel::Fdbsql::DatabaseMethods
- Sequel::Fdbsql::Dataset
- Sequel::Fdbsql::Dataset::BindArgumentMethods
- Sequel::Fdbsql::Dataset::PreparedStatementMethods
- Sequel::Fdbsql::DatasetMethods
- Sequel::Fdbsql::DatasetMethods::PreparedStatementMethods
- Sequel::FilterHaving
- Sequel::Firebird
- Sequel::Firebird::Database
- Sequel::Firebird::DatabaseMethods
- Sequel::Firebird::Dataset
- Sequel::Firebird::DatasetMethods
- Sequel::ForeignKeyConstraintViolation
- Sequel::GraphEach
- Sequel::HashAliases
- Sequel::HookFailed
- Sequel::IBMDB
- Sequel::IBMDB::Connection
- Sequel::IBMDB::Connection::Error
- Sequel::IBMDB::Database
- Sequel::IBMDB::Dataset
- Sequel::IBMDB::Dataset::CallableStatementMethods
- Sequel::IBMDB::Dataset::PreparedStatementMethods
- Sequel::IBMDB::Statement
- Sequel::Inflections
- Sequel::Informix
- Sequel::Informix::Database
- Sequel::Informix::DatabaseMethods
- Sequel::Informix::Dataset
- Sequel::Informix::DatasetMethods
- Sequel::IntegerMigrator
- Sequel::InvalidOperation
- Sequel::InvalidValue
- Sequel::JDBC
- Sequel::JDBC::AS400
- Sequel::JDBC::AS400::DatabaseMethods
- Sequel::JDBC::AS400::Dataset
- Sequel::JDBC::Cubrid
- Sequel::JDBC::Cubrid::DatabaseMethods
- Sequel::JDBC::DB2
- Sequel::JDBC::DB2::DatabaseMethods
- Sequel::JDBC::DB2::Dataset
- Sequel::JDBC::Database
- Sequel::JDBC::Dataset
- Sequel::JDBC::Dataset::PreparedStatementMethods
- Sequel::JDBC::Dataset::StoredProcedureMethods
- Sequel::JDBC::Derby
- Sequel::JDBC::Derby::DatabaseMethods
- Sequel::JDBC::Derby::Dataset
- Sequel::JDBC::Fdbsql
- Sequel::JDBC::Fdbsql::DatabaseMethods
- Sequel::JDBC::Fdbsql::Dataset
- Sequel::JDBC::Firebird
- Sequel::JDBC::Firebird::DatabaseMethods
- Sequel::JDBC::H2
- Sequel::JDBC::H2::DatabaseMethods
- Sequel::JDBC::H2::Dataset
- Sequel::JDBC::HSQLDB
- Sequel::JDBC::HSQLDB::DatabaseMethods
- Sequel::JDBC::HSQLDB::Dataset
- Sequel::JDBC::Informix
- Sequel::JDBC::Informix::DatabaseMethods
- Sequel::JDBC::JTDS
- Sequel::JDBC::JTDS::DatabaseMethods
- Sequel::JDBC::JTDS::Dataset
- Sequel::JDBC::JavaLang
- Sequel::JDBC::JavaSQL
- Sequel::JDBC::JavaxNaming
- Sequel::JDBC::MSSQL
- Sequel::JDBC::MSSQL::DatabaseMethods
- Sequel::JDBC::MySQL
- Sequel::JDBC::MySQL::DatabaseMethods
- Sequel::JDBC::Oracle
- Sequel::JDBC::Oracle::DatabaseMethods
- Sequel::JDBC::Oracle::Dataset
- Sequel::JDBC::Postgres
- Sequel::JDBC::Postgres::DatabaseMethods
- Sequel::JDBC::Postgres::Dataset
- Sequel::JDBC::Progress
- Sequel::JDBC::Progress::DatabaseMethods
- Sequel::JDBC::SQLServer
- Sequel::JDBC::SQLServer::DatabaseMethods
- Sequel::JDBC::SQLServer::DatabaseMethods::MetadataDatasetMethods
- Sequel::JDBC::SQLite
- Sequel::JDBC::SQLite::DatabaseMethods
- Sequel::JDBC::SqlAnywhere
- Sequel::JDBC::SqlAnywhere::DatabaseMethods
- Sequel::JDBC::SqlAnywhere::Dataset
- Sequel::JDBC::Transactions
- Sequel::JDBC::TypeConvertor
- Sequel::LiteralString
- Sequel::LooserTypecasting
- Sequel::MSSQL
- Sequel::MSSQL::DatabaseMethods
- Sequel::MSSQL::DatasetMethods
- Sequel::MSSQL::EmulateLateralWithApply
- Sequel::Metaprogramming
- Sequel::Migration
- Sequel::MigrationAlterTableReverser
- Sequel::MigrationDSL
- Sequel::MigrationReverser
- Sequel::Migrator
- Sequel::Migrator::Error
- Sequel::Migrator::NotCurrentError
- Sequel::Mock
- Sequel::Mock::Connection
- Sequel::Mock::Database
- Sequel::Mock::Dataset
- Sequel::Model
- Sequel::Model::Associations
- Sequel::Model::Associations::AssociationDatasetMethods
- Sequel::Model::Associations::AssociationReflection
- Sequel::Model::Associations::ClassMethods
- Sequel::Model::Associations::DatasetMethods
- Sequel::Model::Associations::EagerGraphLoader
- Sequel::Model::Associations::InstanceMethods
- Sequel::Model::Associations::ManyToManyAssociationReflection
- Sequel::Model::Associations::ManyToOneAssociationReflection
- Sequel::Model::Associations::OneThroughOneAssociationReflection
- Sequel::Model::Associations::OneToManyAssociationReflection
- Sequel::Model::Associations::OneToOneAssociationReflection
- Sequel::Model::Associations::SingularAssociationReflection
- Sequel::Model::ClassMethods
- Sequel::Model::DatasetMethods
- Sequel::Model::DatasetModule
- Sequel::Model::Errors
- Sequel::Model::InstanceMethods
- Sequel::MySQL
- Sequel::MySQL::Database
- Sequel::MySQL::DatabaseMethods
- Sequel::MySQL::Dataset
- Sequel::MySQL::DatasetMethods
- Sequel::MySQL::PreparedStatements
- Sequel::MySQL::PreparedStatements::DatabaseMethods
- Sequel::MySQL::PreparedStatements::DatasetMethods
- Sequel::MySQL::PreparedStatements::DatasetMethods::CallableStatementMethods
- Sequel::MySQL::PreparedStatements::DatasetMethods::PreparedStatementMethods
- Sequel::MySQL::PreparedStatements::DatasetMethods::StoredProcedureMethods
- Sequel::Mysql2
- Sequel::Mysql2::Database
- Sequel::Mysql2::Dataset
- Sequel::NamedTimezones
- Sequel::NamedTimezones::DatabaseMethods
- Sequel::NoExistingObject
- Sequel::NoMatchingRow
- Sequel::NotNullConstraintViolation
- Sequel::ODBC
- Sequel::ODBC::Database
- Sequel::ODBC::Dataset
- Sequel::ODBC::MSSQL
- Sequel::ODBC::MSSQL::DatabaseMethods
- Sequel::ODBC::MSSQL::Dataset
- Sequel::OpenBase
- Sequel::OpenBase::Database
- Sequel::OpenBase::Dataset
- Sequel::Oracle
- Sequel::Oracle::Database
- Sequel::Oracle::DatabaseMethods
- Sequel::Oracle::Dataset
- Sequel::Oracle::Dataset::ArgumentMapper
- Sequel::Oracle::Dataset::BindArgumentMethods
- Sequel::Oracle::Dataset::PreparedStatementMethods
- Sequel::Oracle::DatasetMethods
- Sequel::Plugins
- Sequel::Plugins::AccessedColumns
- Sequel::Plugins::AccessedColumns::InstanceMethods
- Sequel::Plugins::ActiveModel
- Sequel::Plugins::ActiveModel::ClassMethods
- Sequel::Plugins::ActiveModel::Errors
- Sequel::Plugins::ActiveModel::InstanceMethods
- Sequel::Plugins::AfterInitialize
- Sequel::Plugins::AfterInitialize::ClassMethods
- Sequel::Plugins::AfterInitialize::InstanceMethods
- Sequel::Plugins::AssociationAutoreloading
- Sequel::Plugins::AssociationDependencies
- Sequel::Plugins::AssociationDependencies::ClassMethods
- Sequel::Plugins::AssociationDependencies::InstanceMethods
- Sequel::Plugins::AssociationPks
- Sequel::Plugins::AssociationPks::ClassMethods
- Sequel::Plugins::AssociationPks::InstanceMethods
- Sequel::Plugins::AssociationProxies
- Sequel::Plugins::AssociationProxies::AssociationProxy
- Sequel::Plugins::AssociationProxies::ClassMethods
- Sequel::Plugins::AutoValidations
- Sequel::Plugins::AutoValidations::ClassMethods
- Sequel::Plugins::AutoValidations::InstanceMethods
- Sequel::Plugins::BlacklistSecurity
- Sequel::Plugins::BlacklistSecurity::ClassMethods
- Sequel::Plugins::BlacklistSecurity::InstanceMethods
- Sequel::Plugins::BlacklistSecurity::InstanceMethods::ExceptionList
- Sequel::Plugins::BooleanReaders
- Sequel::Plugins::BooleanReaders::ClassMethods
- Sequel::Plugins::Caching
- Sequel::Plugins::Caching::ClassMethods
- Sequel::Plugins::Caching::InstanceMethods
- Sequel::Plugins::ClassTableInheritance
- Sequel::Plugins::ClassTableInheritance::ClassMethods
- Sequel::Plugins::ClassTableInheritance::InstanceMethods
- Sequel::Plugins::ColumnConflicts
- Sequel::Plugins::ColumnConflicts::ClassMethods
- Sequel::Plugins::ColumnConflicts::InstanceMethods
- Sequel::Plugins::ColumnSelect
- Sequel::Plugins::ColumnSelect::ClassMethods
- Sequel::Plugins::Composition
- Sequel::Plugins::Composition::ClassMethods
- Sequel::Plugins::Composition::InstanceMethods
- Sequel::Plugins::ConstraintValidations
- Sequel::Plugins::ConstraintValidations::ClassMethods
- Sequel::Plugins::ConstraintValidations::DatabaseMethods
- Sequel::Plugins::ConstraintValidations::InstanceMethods
- Sequel::Plugins::DatasetAssociations
- Sequel::Plugins::DatasetAssociations::ClassMethods
- Sequel::Plugins::DatasetAssociations::DatasetMethods
- Sequel::Plugins::DefaultsSetter
- Sequel::Plugins::DefaultsSetter::ClassMethods
- Sequel::Plugins::DefaultsSetter::InstanceMethods
- Sequel::Plugins::Dirty
- Sequel::Plugins::Dirty::InstanceMethods
- Sequel::Plugins::EagerEach
- Sequel::Plugins::EagerEach::DatasetMethods
- Sequel::Plugins::ErrorSplitter
- Sequel::Plugins::ErrorSplitter::InstanceMethods
- Sequel::Plugins::ForceEncoding
- Sequel::Plugins::ForceEncoding::ClassMethods
- Sequel::Plugins::ForceEncoding::InstanceMethods
- Sequel::Plugins::HookClassMethods
- Sequel::Plugins::HookClassMethods::ClassMethods
- Sequel::Plugins::HookClassMethods::InstanceMethods
- Sequel::Plugins::InputTransformer
- Sequel::Plugins::InputTransformer::ClassMethods
- Sequel::Plugins::InputTransformer::InstanceMethods
- Sequel::Plugins::InsertReturningSelect
- Sequel::Plugins::InsertReturningSelect::ClassMethods
- Sequel::Plugins::InsertReturningSelect::InstanceMethods
- Sequel::Plugins::InstanceFilters
- Sequel::Plugins::InstanceFilters::Error
- Sequel::Plugins::InstanceFilters::InstanceMethods
- Sequel::Plugins::InstanceHooks
- Sequel::Plugins::InstanceHooks::InstanceMethods
- Sequel::Plugins::JsonSerializer
- Sequel::Plugins::JsonSerializer::ClassMethods
- Sequel::Plugins::JsonSerializer::DatasetMethods
- Sequel::Plugins::JsonSerializer::InstanceMethods
- Sequel::Plugins::JsonSerializer::Literal
- Sequel::Plugins::LazyAttributes
- Sequel::Plugins::LazyAttributes::ClassMethods
- Sequel::Plugins::LazyAttributes::InstanceMethods
- Sequel::Plugins::List
- Sequel::Plugins::List::ClassMethods
- Sequel::Plugins::List::InstanceMethods
- Sequel::Plugins::ManyThroughMany
- Sequel::Plugins::ManyThroughMany::ClassMethods
- Sequel::Plugins::ManyThroughMany::DatasetMethods
- Sequel::Plugins::ManyThroughMany::ManyThroughManyAssociationReflection
- Sequel::Plugins::ManyThroughMany::OneThroughManyAssociationReflection
- Sequel::Plugins::ManyToOnePkLookup
- Sequel::Plugins::ModificationDetection
- Sequel::Plugins::ModificationDetection::ClassMethods
- Sequel::Plugins::ModificationDetection::InstanceMethods
- Sequel::Plugins::MssqlOptimisticLocking
- Sequel::Plugins::MssqlOptimisticLocking::ClassMethods
- Sequel::Plugins::MssqlOptimisticLocking::InstanceMethods
- Sequel::Plugins::NestedAttributes
- Sequel::Plugins::NestedAttributes::ClassMethods
- Sequel::Plugins::NestedAttributes::InstanceMethods
- Sequel::Plugins::OptimisticLocking
- Sequel::Plugins::OptimisticLocking::ClassMethods
- Sequel::Plugins::OptimisticLocking::Error
- Sequel::Plugins::OptimisticLocking::InstanceMethods
- Sequel::Plugins::PgArrayAssociations
- Sequel::Plugins::PgArrayAssociations::ClassMethods
- Sequel::Plugins::PgArrayAssociations::DatasetMethods
- Sequel::Plugins::PgArrayAssociations::ManyToPgArrayAssociationReflection
- Sequel::Plugins::PgArrayAssociations::PgArrayToManyAssociationReflection
- Sequel::Plugins::PgRow
- Sequel::Plugins::PgRow::ClassMethods
- Sequel::Plugins::PgRow::DatabaseMethods
- Sequel::Plugins::PgRow::InstanceMethods
- Sequel::Plugins::PgTypecastOnLoad
- Sequel::Plugins::PgTypecastOnLoad::ClassMethods
- Sequel::Plugins::PgTypecastOnLoad::InstanceMethods
- Sequel::Plugins::PreparedStatements
- Sequel::Plugins::PreparedStatements::ClassMethods
- Sequel::Plugins::PreparedStatements::InstanceMethods
- Sequel::Plugins::PreparedStatementsAssociations
- Sequel::Plugins::PreparedStatementsAssociations::InstanceMethods
- Sequel::Plugins::PreparedStatementsSafe
- Sequel::Plugins::PreparedStatementsSafe::ClassMethods
- Sequel::Plugins::PreparedStatementsSafe::InstanceMethods
- Sequel::Plugins::PreparedStatementsWithPk
- Sequel::Plugins::PreparedStatementsWithPk::ClassMethods
- Sequel::Plugins::PreparedStatementsWithPk::DatasetMethods
- Sequel::Plugins::RcteTree
- Sequel::Plugins::Schema
- Sequel::Plugins::Schema::ClassMethods
- Sequel::Plugins::Scissors
- Sequel::Plugins::Scissors::ClassMethods
- Sequel::Plugins::Serialization
- Sequel::Plugins::Serialization::ClassMethods
- Sequel::Plugins::Serialization::InstanceMethods
- Sequel::Plugins::SerializationModificationDetection
- Sequel::Plugins::SerializationModificationDetection::InstanceMethods
- Sequel::Plugins::Sharding
- Sequel::Plugins::Sharding::ClassMethods
- Sequel::Plugins::Sharding::DatasetMethods
- Sequel::Plugins::Sharding::InstanceMethods
- Sequel::Plugins::SingleTableInheritance
- Sequel::Plugins::SingleTableInheritance::ClassMethods
- Sequel::Plugins::SingleTableInheritance::InstanceMethods
- Sequel::Plugins::SkipCreateRefresh
- Sequel::Plugins::SkipCreateRefresh::InstanceMethods
- Sequel::Plugins::SplitValues
- Sequel::Plugins::SplitValues::ClassMethods
- Sequel::Plugins::SplitValues::InstanceMethods
- Sequel::Plugins::StaticCache
- Sequel::Plugins::StaticCache::ClassMethods
- Sequel::Plugins::StaticCache::InstanceMethods
- Sequel::Plugins::StringStripper
- Sequel::Plugins::StringStripper::ClassMethods
- Sequel::Plugins::Subclasses
- Sequel::Plugins::Subclasses::ClassMethods
- Sequel::Plugins::TableSelect
- Sequel::Plugins::TableSelect::ClassMethods
- Sequel::Plugins::TacticalEagerLoading
- Sequel::Plugins::TacticalEagerLoading::DatasetMethods
- Sequel::Plugins::TacticalEagerLoading::InstanceMethods
- Sequel::Plugins::Timestamps
- Sequel::Plugins::Timestamps::ClassMethods
- Sequel::Plugins::Timestamps::InstanceMethods
- Sequel::Plugins::Touch
- Sequel::Plugins::Touch::ClassMethods
- Sequel::Plugins::Touch::InstanceMethods
- Sequel::Plugins::Tree
- Sequel::Plugins::Tree::ClassMethods
- Sequel::Plugins::Tree::InstanceMethods
- Sequel::Plugins::Tree::SingleRoot
- Sequel::Plugins::Tree::SingleRoot::ClassMethods
- Sequel::Plugins::Tree::SingleRoot::InstanceMethods
- Sequel::Plugins::Tree::TreeMultipleRootError
- Sequel::Plugins::TypecastOnLoad
- Sequel::Plugins::TypecastOnLoad::ClassMethods
- Sequel::Plugins::TypecastOnLoad::InstanceMethods
- Sequel::Plugins::UnlimitedUpdate
- Sequel::Plugins::UnlimitedUpdate::InstanceMethods
- Sequel::Plugins::UpdateOrCreate
- Sequel::Plugins::UpdateOrCreate::ClassMethods
- Sequel::Plugins::UpdatePrimaryKey
- Sequel::Plugins::UpdatePrimaryKey::InstanceMethods
- Sequel::Plugins::ValidationClassMethods
- Sequel::Plugins::ValidationClassMethods::ClassMethods
- Sequel::Plugins::ValidationClassMethods::ClassMethods::Generator
- Sequel::Plugins::ValidationClassMethods::InstanceMethods
- Sequel::Plugins::ValidationHelpers
- Sequel::Plugins::ValidationHelpers::InstanceMethods
- Sequel::Plugins::XmlSerializer
- Sequel::Plugins::XmlSerializer::ClassMethods
- Sequel::Plugins::XmlSerializer::DatasetMethods
- Sequel::Plugins::XmlSerializer::InstanceMethods
- Sequel::PoolTimeout
- Sequel::Postgres
- Sequel::Postgres::Adapter
- Sequel::Postgres::AlterTableGenerator
- Sequel::Postgres::ArrayOp
- Sequel::Postgres::ArrayOpMethods
- Sequel::Postgres::CreateTableGenerator
- Sequel::Postgres::Database
- Sequel::Postgres::DatabaseMethods
- Sequel::Postgres::Dataset
- Sequel::Postgres::Dataset::ArgumentMapper
- Sequel::Postgres::Dataset::BindArgumentMethods
- Sequel::Postgres::Dataset::PreparedStatementMethods
- Sequel::Postgres::DatasetMethods
- Sequel::Postgres::DatasetMethods::PreparedStatementMethods
- Sequel::Postgres::EnumDatabaseMethods
- Sequel::Postgres::ExclusionConstraintViolation
- Sequel::Postgres::HStore
- Sequel::Postgres::HStore::DatabaseMethods
- Sequel::Postgres::HStore::Parser
- Sequel::Postgres::HStoreOp
- Sequel::Postgres::HStoreOpMethods
- Sequel::Postgres::InetDatabaseMethods
- Sequel::Postgres::InetDatasetMethods
- Sequel::Postgres::IntervalDatabaseMethods
- Sequel::Postgres::IntervalDatabaseMethods::Parser
- Sequel::Postgres::IntervalDatasetMethods
- Sequel::Postgres::JSONArray
- Sequel::Postgres::JSONArrayBase
- Sequel::Postgres::JSONBArray
- Sequel::Postgres::JSONBHash
- Sequel::Postgres::JSONBOp
- Sequel::Postgres::JSONBaseOp
- Sequel::Postgres::JSONDatabaseMethods
- Sequel::Postgres::JSONHash
- Sequel::Postgres::JSONHashBase
- Sequel::Postgres::JSONOp
- Sequel::Postgres::JSONOpMethods
- Sequel::Postgres::LooseCount
- Sequel::Postgres::PGArray
- Sequel::Postgres::PGArray::Creator
- Sequel::Postgres::PGArray::DatabaseMethods
- Sequel::Postgres::PGArray::JSONCreator
- Sequel::Postgres::PGArray::Parser
- Sequel::Postgres::PGRange
- Sequel::Postgres::PGRange::DatabaseMethods
- Sequel::Postgres::PGRange::DatasetMethods
- Sequel::Postgres::PGRange::Parser
- Sequel::Postgres::PGRow
- Sequel::Postgres::PGRow::ArrayRow
- Sequel::Postgres::PGRow::DatabaseMethods
- Sequel::Postgres::PGRow::HashRow
- Sequel::Postgres::PGRow::Parser
- Sequel::Postgres::PGRow::Splitter
- Sequel::Postgres::PGRowOp
- Sequel::Postgres::PGRowOp::ExpressionMethods
- Sequel::Postgres::RangeOp
- Sequel::Postgres::RangeOpMethods
- Sequel::Postgres::StaticCacheUpdater
- Sequel::PrettyTable
- Sequel::Progress
- Sequel::Progress::DatabaseMethods
- Sequel::Progress::DatasetMethods
- Sequel::Qualifier
- Sequel::QueryLiterals
- Sequel::Rollback
- Sequel::SQL
- Sequel::SQL::AliasMethods
- Sequel::SQL::AliasedExpression
- Sequel::SQL::BitwiseMethods
- Sequel::SQL::Blob
- Sequel::SQL::BooleanConstant
- Sequel::SQL::BooleanExpression
- Sequel::SQL::BooleanMethods
- Sequel::SQL::Builders
- Sequel::SQL::CaseExpression
- Sequel::SQL::Cast
- Sequel::SQL::CastMethods
- Sequel::SQL::ColumnAll
- Sequel::SQL::ComplexExpression
- Sequel::SQL::ComplexExpressionMethods
- Sequel::SQL::Constant
- Sequel::SQL::Constants
- Sequel::SQL::DateAdd
- Sequel::SQL::DateAdd::DatasetMethods
- Sequel::SQL::DelayedEvaluation
- Sequel::SQL::Expression
- Sequel::SQL::Function
- Sequel::SQL::GenericExpression
- Sequel::SQL::Identifier
- Sequel::SQL::InequalityMethods
- Sequel::SQL::JoinClause
- Sequel::SQL::JoinOnClause
- Sequel::SQL::JoinUsingClause
- Sequel::SQL::NegativeBooleanConstant
- Sequel::SQL::NumericExpression
- Sequel::SQL::NumericMethods
- Sequel::SQL::OperatorBuilders
- Sequel::SQL::OrderMethods
- Sequel::SQL::OrderedExpression
- Sequel::SQL::PlaceholderLiteralString
- Sequel::SQL::QualifiedIdentifier
- Sequel::SQL::QualifyingMethods
- Sequel::SQL::StringConcatenationMethods
- Sequel::SQL::StringExpression
- Sequel::SQL::StringMethods
- Sequel::SQL::Subscript
- Sequel::SQL::SubscriptMethods
- Sequel::SQL::ValueList
- Sequel::SQL::VirtualRow
- Sequel::SQL::Window
- Sequel::SQL::Wrapper
- Sequel::SQLTime
- Sequel::SQLite
- Sequel::SQLite::Database
- Sequel::SQLite::DatabaseMethods
- Sequel::SQLite::Dataset
- Sequel::SQLite::Dataset::ArgumentMapper
- Sequel::SQLite::Dataset::BindArgumentMethods
- Sequel::SQLite::Dataset::PreparedStatementMethods
- Sequel::SQLite::DatasetMethods
- Sequel::Schema
- Sequel::Schema::AlterTableGenerator
- Sequel::Schema::CreateTableGenerator
- Sequel::Schema::Generator
- Sequel::SchemaCaching
- Sequel::SchemaDumper
- Sequel::SelectRemove
- Sequel::Sequel3DatasetMethods
- Sequel::SerializationFailure
- Sequel::ServerBlock
- Sequel::SetOverrides
- Sequel::ShardedSingleConnectionPool
- Sequel::ShardedThreadedConnectionPool
- Sequel::SimpleMigration
- Sequel::SingleConnectionPool
- Sequel::SqlAnywhere
- Sequel::SqlAnywhere::Database
- Sequel::SqlAnywhere::DatabaseMethods
- Sequel::SqlAnywhere::Dataset
- Sequel::SqlAnywhere::DatasetMethods
- Sequel::SqlAnywhere::SQLAnywhereException
- Sequel::Swift
- Sequel::Swift::Database
- Sequel::Swift::Dataset
- Sequel::Swift::MySQL
- Sequel::Swift::MySQL::DatabaseMethods
- Sequel::Swift::MySQL::Dataset
- Sequel::Swift::Postgres
- Sequel::Swift::Postgres::DatabaseMethods
- Sequel::Swift::SQLite
- Sequel::Swift::SQLite::DatabaseMethods
- Sequel::Swift::SQLite::Dataset
- Sequel::ThreadLocalTimezones
- Sequel::ThreadedConnectionPool
- Sequel::ThreadedServerBlock
- Sequel::TimestampMigrator
- Sequel::Timezones
- Sequel::TinyTDS
- Sequel::TinyTDS::Database
- Sequel::TinyTDS::Dataset
- Sequel::TinyTDS::Dataset::ArgumentMapper
- Sequel::TinyTDS::Dataset::PreparedStatementMethods
- Sequel::ToDot
- Sequel::ToDot::DatasetMethods
- Sequel::UnbindDuplicate
- Sequel::Unbinder
- Sequel::UndefinedAssociation
- Sequel::UniqueConstraintViolation
- Sequel::UnthreadedServerBlock
- Sequel::ValidationFailed
- String
- String::Inflections
- Array
- FalseClass
- Hash
- NilClass
- Numeric
- Object
- PGconn
- PGresult
- Range
- Symbol
- TrueClass

No matching classes.

# New Features

- A one_through_one association type has been added. This is similar to the many_to_many association type in that it uses a join table, but it returns a single record instead of an array of records. This is designed for cases where the foreign key in the join table that references the current table has a unique constraint, or where you want to use an order to just pick the first matching record.

  Similarly, the many_through_many plugin now also offers a one_through_many association.

- An association_join method has been added to model datasets, for setting up joins based on associations. This basically does the same join that eager_graph would do, but does not make the other changes that eager_graph makes.

  Unlike eager_graph (which uses LEFT OUTER JOINs by default), association_join uses INNER JOINs, but there are also association_*_join methods (e.g. association_left_join) for using different join types.

  Similar to eager_graph, you can use cascading of associations or multiple associations.

      Album.association_join(:artist, :tracks)
      Artist.association_left_join(:albums=>:tracks)

- Dataset#eager_graph_with_options has been added for model datasets. It currently supports a :join_type option, for overriding the type of join to use on a per-call basis, as well as a :limit_strategy option. The API is similar to eager_graph, except that the associations to eagerly load are passed in as a single argument, and it takes an options hash.

  The :limit_strategy option works similarly to the :eager_limit_strategy option when eagerly loading. If set to true and the database supports window functions, it will join the current dataset to a subquery that uses a window function to correctly restrict the join to only those objects that fall within the association's limit/offset.

  The :limit_strategy option is not on by default. It is possible for it to perform significantly worse than the default strategy (which uses array slicing in ruby). The :limit_strategy significantly changes the SQL used, and can change the results of the query if any filters/orders related to the association are used.

  It's recommended you only use the :limit_strategy option if you are experiencing a bottleneck and you have benchmarked that it is faster and still produces the desired results.

      Artist.eager_graph_with_options(:first_10_albums,
        :limit_strategy=>true)
      # SELECT artists.id, artists.name,
      #   first_10_albums.id AS first_10_albums_id,
      #   first_10_albums.name AS first_10_albums_name,
      #   first_10_albums.artist_id,
      #   first_10_albums.release_date
      # FROM artists
      # LEFT OUTER JOIN (
      #   SELECT id, name, artist_id, release_date
      #   FROM (
      #     SELECT *, row_number() OVER (PARTITION BY tracks.album_id)
      #       AS x_sequel_row_number_x
      #     FROM albums
      #   ) AS t1 WHERE (x_sequel_row_number_x <= 10)
      # ) AS first_10_albums ON (first_10_albums.artist_id = artists.id)

- Dataset#full_text_search on PostgreSQL now supports :plain and :phrase options. :plain takes the search terms as a single string, and searches for rows where all terms are used. :phrase is similar to :plain, but also adds a substring search to ensure that the string given appears verbatim in the text.

- A :graph_order association option has been added, for using a different order when using eager_graph. This is mostly designed for cases where :order should be qualified in other cases, but using a qualification breaks eager_graph because the correct qualifier is not known until runtime.

- SQL::AliasedExpression#alias has been added as an alias for aliaz.

# Other Improvements

- Sequel will now automatically use an eager limit strategy for *_one associations that use an :order option. For associations that are truly one-to-one, an :order option is not needed, so it only makes sense to have an :order option if the association could theoretically return multiple results (in which case an eager limit strategy is helpful).

- The queries that Sequel uses to filter by associations when those associations have conditions are now simpler and easier for the database to execute.

- The queries that Sequel uses for dataset associations now handle cases where unqualified identifiers were used in the receiving dataset that would be made ambiguous by a join.

- A limit strategy is now used when filtering by associations if the association has a limit and the database supports window functions. This allows Sequel to setup a correct filter in such cases.

      Artist.where(:first_10_albums=>Album[1]).all
      # SELECT *
      # FROM artists
      # WHERE (artists.id IN (
      #   SELECT albums.artist_id
      #   FROM albums
      #   WHERE ((albums.artist_id IS NOT NULL) AND (albums.id IN (
      #     SELECT id FROM (
      #       SELECT albums.id, row_number() OVER
      #         (PARTITION BY albums.artist_id ORDER BY release_date)
      #         AS x_sequel_row_number_x
      #       FROM albums
      #     ) AS t1
      #     WHERE (x_sequel_row_number_x <= 10)
      #   )) AND (albums.id = 1))))

- A limit strategy is now used in the dataset_associations plugin if the association has a limit and the database supports window functions. This makes the resulting datasets return correct results.

      Artist.first_10_albums
      # SELECT *
      # FROM albums
      # WHERE ((albums.artist_id IN (
      #   SELECT artists.id FROM artists)
      # ) AND (albums.id IN (
      #   SELECT id FROM (
      #     SELECT albums.id, row_number() OVER
      #       (PARTITION BY albums.artist_id ORDER BY release_date)
      #       AS x_sequel_row_number_x
      #     FROM albums
      #   ) AS t1
      #   WHERE (x_sequel_row_number_x <= 10)
      # )))
      # ORDER BY release_date

- You can now pass symbols with embedded qualifiers or aliases, as well as SQL::Identifier, SQL::QualifiedIdentifier, and SQL::AliasedExpression objects as the first argument to Dataset#graph.

- The nested_attributes plugin now automatically handles presence validations on foreign keys when creating associated objects. It now sets the foreign key value (or a placeholder value) before validating such objects.

- Offsets on *_one associations are now respected when using eager_graph.

- eager graphing *_many associations with offsets no longer breaks if there are no associated results.

- Database#register_array_type in the pg_array extension now works correctly if there is no existing scalar conversion proc for the type.

- Unique, foreign key, and not null constraint violations are now recognized correctly on SQLite 3.8.2+.

- The odbc adapter now returns fractional seconds in timestamps.

- The obdc/mssql adapter now inputs timestamps with 3 decimal places.

# Backwards Compatibility

- The private Model.apply_window_function_eager_limit_strategy method has been removed.

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