DatabaseValue
public struct DatabaseValue
DatabaseValue is the intermediate type between SQLite and your values.
-
An SQLite storage (NULL, INTEGER, REAL, TEXT, BLOB).
See moreDeclaration
Swift
public enum Storage : Equatable -
The SQLite storage
Declaration
Swift
public let storage: Storage -
The NULL DatabaseValue.
Declaration
Swift
public static let null = DatabaseValue(storage: .null) -
Creates a DatabaseValue from Any.
The result is nil unless object adopts DatabaseValueConvertible.
Declaration
Swift
public init?(value: Any)
-
Returns true if databaseValue is NULL.
Declaration
Swift
public var isNull: Bool
-
The hash value
Declaration
Swift
public var hashValue: Int -
Returns whether two DatabaseValues are equal.
1.databaseValue == "foo".databaseValue // false 1.databaseValue == 1.databaseValue // trueWhen comparing integers and doubles, the result is true if and only values are equal, and if converting one type to the other does not lose information:
1.databaseValue == 1.0.databaseValue // trueFor a comparison that distinguishes integer and doubles, compare storages instead:
1.databaseValue.storage == 1.0.databaseValue.storage // falseDeclaration
Swift
public static func ==(lhs: DatabaseValue, rhs: DatabaseValue) -> Bool
-
Returns self
Declaration
Swift
public var databaseValue: DatabaseValue -
Returns
databaseValueDeclaration
Swift
public static func fromDatabaseValue(_ databaseValue: DatabaseValue) -> DatabaseValue? -
This property is an implementation detail of the query interface. Do not use it directly.
See https://github.com/groue/GRDB.swift/#the-query-interface
Low Level Query Interface
See SQLExpression.sqlExpression
Declaration
Swift
public var sqlExpression: SQLExpression
-
A textual representation of
self.Declaration
Swift
public var description: String
-
This function is an implementation detail of the query interface. Do not use it directly.
See https://github.com/groue/GRDB.swift/#the-query-interface
Low Level Query Interface
See SQLExpression.expressionSQL(_:arguments:)
Declaration
Swift
public func expressionSQL(_ arguments: inout StatementArguments?) -> String -
This property is an implementation detail of the query interface. Do not use it directly.
See https://github.com/groue/GRDB.swift/#the-query-interface
Low Level Query Interface
See SQLExpression.negated
Declaration
Swift
public var negated: SQLExpression
View on GitHub
Install in Dash
DatabaseValue Struct Reference