DatabaseValue
public struct DatabaseValue
DatabaseValue is the intermediate type between SQLite and your values.
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An SQLite storage (NULL, INTEGER, REAL, TEXT, BLOB).
See moreDeclaration
Swift
public enum Storage : Equatable
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The SQLite storage
Declaration
Swift
public let storage: Storage
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The NULL DatabaseValue.
Declaration
Swift
public static let null = DatabaseValue(storage: .null)
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Creates a DatabaseValue from Any.
The result is nil unless object adopts DatabaseValueConvertible.
Declaration
Swift
public init?(value: Any)
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Returns true if databaseValue is NULL.
Declaration
Swift
public var isNull: Bool
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The hash value
Declaration
Swift
public var hashValue: Int
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Returns whether two DatabaseValues are equal.
1.databaseValue == "foo".databaseValue // false 1.databaseValue == 1.databaseValue // true
When 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 // true
For a comparison that distinguishes integer and doubles, compare storages instead:
1.databaseValue.storage == 1.0.databaseValue.storage // false
Declaration
Swift
public static func ==(lhs: DatabaseValue, rhs: DatabaseValue) -> Bool
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Returns self
Declaration
Swift
public var databaseValue: DatabaseValue
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Returns
databaseValue
Declaration
Swift
public static func fromDatabaseValue(_ databaseValue: DatabaseValue) -> DatabaseValue?
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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
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A textual representation of
self
.Declaration
Swift
public var description: String
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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
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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