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SQLExpressionExists Struct Reference
SQLExpressionExists
public struct SQLExpressionExists : SQLExpressionThis type 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
SQLExpressionExists is an expression that checks if a subquery would return
rows or not with the EXISTS operator.
-
The query
Declaration
Swift
public let query: SQLSelectQuery -
If true, uses
NOT EXISTSinstead ofEXISTSoperatorDeclaration
Swift
public let isNegated: Bool -
Creates an expression that checks if a subquery would return rows or not with the
EXISTSoperator.Declaration
Swift
public init(_ query: SQLSelectQuery, negated: Bool = false) -
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