Package org.apache.calcite.sql.validate

Enum SqlConformance.SelectAliasLookup

java.lang.Object

java.lang.Enum<SqlConformance.SelectAliasLookup>

org.apache.calcite.sql.validate.SqlConformance.SelectAliasLookup

All Implemented Interfaces:

Serializable, Comparable<SqlConformance.SelectAliasLookup>, Constable

Enclosing interface:

SqlConformance

public static enum SqlConformance.SelectAliasLookup
extends Enum<SqlConformance.SelectAliasLookup>

Value describing how to perform lookup for aliases defined in a SELECT list. When enabled, this feature is called "lateral column alias" in Spark SQL and Redshift, but also "inline column alias", or "self-referencing alias", "expression alias reuse", or "alias chaining".

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
ANY	All values defined in a SELECT list can be used within the same list.
LEFT_TO_RIGHT	Values defined in a SELECT list are visible to the right of their definition.
UNSUPPORTED	Values defined in a SELECT list are not visible within the list (standard SQL).

Method Summary

Modifier and Type	Method	Description
static SqlConformance.SelectAliasLookup	valueOf(String name)	Returns the enum constant of this type with the specified name.
static SqlConformance.SelectAliasLookup[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

UNSUPPORTED

public static final SqlConformance.SelectAliasLookup UNSUPPORTED

Values defined in a SELECT list are not visible within the list (standard SQL).

LEFT_TO_RIGHT

public static final SqlConformance.SelectAliasLookup LEFT_TO_RIGHT

Values defined in a SELECT list are visible to the right of their definition.

ANY

public static final SqlConformance.SelectAliasLookup ANY

All values defined in a SELECT list can be used within the same list.

Method Details

values

public static SqlConformance.SelectAliasLookup[] values()

Returns an array containing the constants of this enum type, in the order they are declared.

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static SqlConformance.SelectAliasLookup valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null