Struct ViewRepresentation

#[non_exhaustive]
pub struct ViewRepresentation {
    pub dialect: Option<ViewDialect>,
    pub dialect_version: Option<String>,
    pub view_original_text: Option<String>,
    pub view_expanded_text: Option<String>,
    pub validation_connection: Option<String>,
    pub is_stale: Option<bool>,
}

A structure that contains the dialect of the view, and the query that defines the view.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

dialect: Option<ViewDialect>

The dialect of the query engine.

dialect_version: Option<String>

The version of the dialect of the query engine. For example, 3.0.0.

view_original_text: Option<String>

The SELECT query provided by the customer during CREATE VIEW DDL. This SQL is not used during a query on a view (ViewExpandedText is used instead). ViewOriginalText is used for cases like SHOW CREATE VIEW where users want to see the original DDL command that created the view.

view_expanded_text: Option<String>

The expanded SQL for the view. This SQL is used by engines while processing a query on a view. Engines may perform operations during view creation to transform ViewOriginalText to ViewExpandedText. For example:

• Fully qualified identifiers: SELECT * from table1 -> SELECT * from db1.table1

validation_connection: Option<String>

The name of the connection to be used to validate the specific representation of the view.

is_stale: Option<bool>

Dialects marked as stale are no longer valid and must be updated before they can be queried in their respective query engines.

Implementations

impl ViewRepresentation

pub fn dialect(&self) -> Option<&ViewDialect>

The dialect of the query engine.

pub fn dialect_version(&self) -> Option<&str>

The version of the dialect of the query engine. For example, 3.0.0.

pub fn view_original_text(&self) -> Option<&str>

The SELECT query provided by the customer during CREATE VIEW DDL. This SQL is not used during a query on a view (ViewExpandedText is used instead). ViewOriginalText is used for cases like SHOW CREATE VIEW where users want to see the original DDL command that created the view.

pub fn view_expanded_text(&self) -> Option<&str>

The expanded SQL for the view. This SQL is used by engines while processing a query on a view. Engines may perform operations during view creation to transform ViewOriginalText to ViewExpandedText. For example:

• Fully qualified identifiers: SELECT * from table1 -> SELECT * from db1.table1

pub fn validation_connection(&self) -> Option<&str>

The name of the connection to be used to validate the specific representation of the view.

pub fn is_stale(&self) -> Option<bool>

Dialects marked as stale are no longer valid and must be updated before they can be queried in their respective query engines.

impl ViewRepresentation

pub fn builder() -> ViewRepresentationBuilder

Creates a new builder-style object to manufacture ViewRepresentation.

Trait Implementations

impl Clone for ViewRepresentation

fn clone(&self) -> ViewRepresentation

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ViewRepresentation

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for ViewRepresentation

fn eq(&self, other: &ViewRepresentation) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ViewRepresentation