Orville.PostgreSQL.Expr.Select

Since: 1.0.0.0

Documentation

data SelectClause

Type to represent the SELECT part of a SQL query. E.G.

SELECT

or

SELECT DISTINCT

SelectClause provides a SqlExpression instance. See unsafeSqlExpression for how to construct a value with your own custom SQL.

Since: 1.0.0.0

Instances

SqlExpression SelectClause

Defined in Orville.PostgreSQL.Expr.Select

Methods

toRawSql :: SelectClause -> RawSql

unsafeFromRawSql :: RawSql -> SelectClause

selectClause :: SelectExpr -> SelectClause

Constructs a SelectClause using the given SelectExpr, which may indicate that this is a DISTINCT select.

Since: 1.0.0.0

data SelectExpr

Type to represent any expression modifying the SELECT part of a SQL. E.G.

DISTINCT

SelectExpr provides a SqlExpression instance. See unsafeSqlExpression for how to construct a value with your own custom SQL.

Since: 1.0.0.0

Instances

SqlExpression SelectExpr

Defined in Orville.PostgreSQL.Expr.Select

Methods

toRawSql :: SelectExpr -> RawSql

unsafeFromRawSql :: RawSql -> SelectExpr

selectExpr :: Maybe Distinct -> SelectExpr

Constructs a SelectExpr that may or may not make the SELECT distinct, depending on whether 'Just Distinct' is passed or not.

Since: 1.0.0.0

data Distinct

A simple value type used to indicate that a SELECT should be distinct when constructing a SelectExpr.

Since: 1.0.0.0

Constructors

Distinct