StatementColumnConvertible

public protocol StatementColumnConvertible

When a type adopts both DatabaseValueConvertible and StatementColumnConvertible, it is granted with faster access to the SQLite database values.

  • Returns a value initialized from a raw SQLite statement pointer.

    As an example, here is the how Int64 adopts StatementColumnConvertible:

    extension Int64: StatementColumnConvertible {
    public init(sqliteStatement: SQLiteStatement, index: Int32) {
        self = sqlite3_column_int64(sqliteStatement, index)
    }
}

    When you implement this method, don’t check for NULL.

    See https://www.sqlite.org/c3ref/column_blob.html for more information.

    Declaration

    Swift

    init(sqliteStatement: SQLiteStatement, index: Int32)

    Parameters

    sqliteStatement

    A pointer to an SQLite statement.
    index

    The column index.
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