ComputedColumn class final
Database-computed SQL using physical column names.
Constructors
- ComputedColumn(String expression, {ComputedStorage storage = ComputedStorage.stored})
-
Uses one trusted SQL expression for every supported dialect.
const
- ComputedColumn.forDialects({required String sqlite, required String postgres, String? mysql, String? mariadb, ComputedStorage storage = ComputedStorage.stored})
-
Uses explicit dialect expressions without silently substituting another.
const
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- mariadb → String?
-
Explicit MariaDB expression, or null when that dialect is unsupported.
final
- mysql → String?
-
Explicit MySQL expression, or null when that dialect is unsupported.
final
- postgres → String
-
Trusted PostgreSQL expression using physical column names.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- sqlite → String
-
Trusted SQLite expression using physical column names.
final
- storage → ComputedStorage
-
Storage strategy requested from the target database.
final
Methods
-
expression(
SqlDialect dialect) → String - Returns the target expression or throws if that dialect was not declared.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited