Enum MvChange 

pub enum MvChange {
    Create(MaterializedView),
    Drop(QualifiedName),
    ReplaceBody {
        source: MaterializedView,
        catalog: MaterializedView,
    },
    SetComment {
        qname: QualifiedName,
        comment: Option<String>,
    },
    SetColumnComment {
        qname: QualifiedName,
        column: Identifier,
        comment: Option<String>,
    },
}

A structural change to a single materialized view.

Variants

Create(MaterializedView)

Create a new materialized view.

Drop(QualifiedName)

Drop an existing materialized view.

Unlike ViewChange::Drop, this is classified as Safe because materialized views are derived data that can be recreated by refreshing.

ReplaceBody

Replace the SELECT body of a materialized view.

Materialized views do not support CREATE OR REPLACE; the planner must always DROP then CREATE the MV (and rebuild any indexes on it).

Fields

source: MaterializedView

The MV as it should exist (source SQL).

catalog: MaterializedView

The MV as it currently exists (live catalog).

SetComment

Set (or clear) the MV-level COMMENT ON MATERIALIZED VIEW.

Fields

qname: QualifiedName

MV qname.

comment: Option<String>

New comment (None clears the comment).

SetColumnComment

Set (or clear) a COMMENT ON COLUMN mv.col.

Fields

qname: QualifiedName

MV qname.

column: Identifier

Column name.

comment: Option<String>

New comment (None clears the comment).

Trait Implementations

impl Clone for MvChange

fn clone(&self) -> MvChange

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MvChange

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MvChange

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for MvChange

impl PartialEq for MvChange

fn eq(&self, other: &MvChange) -> 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 Serialize for MvChange

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for MvChange