Struct ExtensionDropStatement

pub struct ExtensionDropStatement { /* private fields */ }

Available on crate feature backend-postgres only.

Creates a new “DROP EXTENSION” statement for PostgreSQL

Synopsis

DROP EXTENSION [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]

Example

Drops the “ltree” extension if it exists.

use sea_query::{extension::postgres::Extension, *};

assert_eq!(
    Extension::drop()
        .name("ltree")
        .cascade()
        .if_exists()
        .to_string(PostgresQueryBuilder),
    r#"DROP EXTENSION IF EXISTS ltree CASCADE"#
);

References

Refer to the PostgreSQL Documentation

Implementations

impl ExtensionDropStatement

pub fn new() -> Self

pub fn name<T: Into<String>>(&mut self, name: T) -> &mut Self

Sets the name of the extension to be dropped.

pub fn if_exists(&mut self) -> &mut Self

Uses “IF EXISTS” on Drop Extension Statement.

pub fn cascade(&mut self) -> &mut Self

Uses “CASCADE” on Drop Extension Statement.

pub fn restrict(&mut self) -> &mut Self

Uses “RESTRICT” on Drop Extension Statement.

impl ExtensionDropStatement

pub fn build_ref<T: ExtensionBuilder>(&self, extension_builder: &T) -> String

pub fn build_collect<T: ExtensionBuilder>( &self, extension_builder: T, sql: &mut dyn SqlWriter, ) -> String

pub fn build_collect_ref<T: ExtensionBuilder>( &self, extension_builder: &T, sql: &mut dyn SqlWriter, ) -> String

pub fn to_string<T>(&self, extension_builder: T) -> String

where T: ExtensionBuilder + QueryBuilder,

Build corresponding SQL statement and return SQL string

Trait Implementations

impl Clone for ExtensionDropStatement

fn clone(&self) -> ExtensionDropStatement

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExtensionDropStatement

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

Formats the value using the given formatter.

impl Default for ExtensionDropStatement

fn default() -> ExtensionDropStatement

Returns the “default value” for a type.

impl PartialEq for ExtensionDropStatement

fn eq(&self, other: &ExtensionDropStatement) -> 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 Eq for ExtensionDropStatement

impl StructuralPartialEq for ExtensionDropStatement