Enumeration

SQLDirection

Describes an ordering direction for a given sorting key.

enum SQLDirection

Topics

case ascending
Ascending order (minimum to maximum), as defined by the sorting key’s data type.
case descending
Descending order (maximum to minimum), as defined by the sorting key’s data type.
case notNull
NOT NULL order (non-NULL values followed by NULL values).
case null
NULL order (NULL values followed by non-NULL valeus).

func serialize(to: inout SQLSerializer)
Invoked when a request is made to serialize the expression to raw SQL.

struct SQLAlias
Encapsulates SQL’s <expression> [AS] <name> syntax, most often used to declare aliaed names for columns and tables.
struct SQLBetween
An SQLExpression which constructs SQL of the form <operand> BETWEEN <lowerBound> AND <upperBound>.
struct SQLColumn
An expression representing an optionally table-qualified column in an SQL table.
struct SQLConstraint
An expression representing the combination of a constraint name and algorithm for table constraints.
enum SQLDataType
Represents a value’s type in SQL.
struct SQLDistinct
An expression representing the subexpression of an aggregate function call which specifies whether the aggregate groups over all result rows or only distinct rows.
enum SQLForeignKeyAction
An expression specifying a behavior for a foreign key constraint violation.
struct SQLNestedSubpathExpression
A “nested subpath” expression is used to descend into the “deeper” structure of a non-scalar value, such as a dictionary, array, or JSON value.
struct SQLQualifiedTable
An expression representing an optionally second-level-qualified SQL table.
struct SQLQueryString
An expression consisting of an array of constituent subexpressions generated by custom string interpolations.