SQLRow

Topics

Instance Properties

• allColumns
  The list of all column names available in the row, in no particular order.

Instance Methods

• contains(column:)
  Returns true if the given column name is available in the row, false otherwise.
• decode(column:as:)
  If the given column name exists in the row, attempt to decode it as the given type and return the result if successful.
• decode(column:inferringAs:)
  This method exists to enable the compiler to perform type inference on the generic parameter D of decode(column:as:). Protocols can not provide default arguments to methods, which is required for inference to work with generic type parameters. It is not expected that user code will invoke this method directly; rather it will be selected by the compiler automatically, as in this example:
• decode(model:prefix:keyDecodingStrategy:userInfo:)
  Decode an entire Decodable “model” type at once, optionally applying a prefix and/or SQLRowDecoder.KeyDecodingStrategy to the type’s coding keys.
• decode(model:with:)
  Decode an entire Decodable “model” type at once using an explicit SQLRowDecoder.
• decodeNil(column:)
  Must return true if the given column name is missing from the row or if it exists but has a value equivalent to an SQL NULL, or false if the column name exists with a non-NULL value.