Enum Statement 

pub enum Statement {
    Query(QueryExpr),
    Insert(InsertExpr),
    UpdateQuery(UpdateExpr),
    DeleteQuery(DeleteExpr),
    CreateType(CreateTypeExpr),
    CreateLink(CreateLinkExpr),
    AlterTable(AlterTableExpr),
    DropTable(DropTableExpr),
    CreateView(CreateViewExpr),
    RefreshView(RefreshViewExpr),
    DropView(DropViewExpr),
    Union(UnionExpr),
    Upsert(UpsertExpr),
    Explain(Box<Statement>),
    Begin,
    Commit,
    Rollback,
    ListTypes,
    Describe(String),
    ListLinks,
}

Top-level PowQL statement.

Variants

Query(QueryExpr)

Insert(InsertExpr)

UpdateQuery(UpdateExpr)

DeleteQuery(DeleteExpr)

CreateType(CreateTypeExpr)

CreateLink(CreateLinkExpr)

link <Owner>.<name> -> <Target> on <local> = <target>: declare a persistent entity link (catalog v7). Lowers to Catalog::create_link.

AlterTable(AlterTableExpr)

DropTable(DropTableExpr)

CreateView(CreateViewExpr)

RefreshView(RefreshViewExpr)

DropView(DropViewExpr)

Union(UnionExpr)

Upsert(UpsertExpr)

Explain(Box<Statement>)

Begin

Commit

Rollback

ListTypes

schema — introspection: list every type (table) in the catalog.

Describe(String)

describe <Type> / schema <Type> — introspection: the columns and indexes of one type.

ListLinks

schema links: introspection: list every declared entity link.

Trait Implementations

impl Clone for Statement

fn clone(&self) -> Statement

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Statement

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

Formats the value using the given formatter.

impl PartialEq for Statement

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Statement