Struct sea_orm_migration::prelude::IndexCreateStatement

pub struct IndexCreateStatement { /* private fields */ }

Create an index for an existing table

Examples

use sea_query::{tests_cfg::*, *};

let index = Index::create()
    .name("idx-glyph-aspect")
    .table(Glyph::Table)
    .col(Glyph::Aspect)
    .to_owned();

assert_eq!(
    index.to_string(MysqlQueryBuilder),
    r#"CREATE INDEX `idx-glyph-aspect` ON `glyph` (`aspect`)"#
);
assert_eq!(
    index.to_string(PostgresQueryBuilder),
    r#"CREATE INDEX "idx-glyph-aspect" ON "glyph" ("aspect")"#
);
assert_eq!(
    index.to_string(SqliteQueryBuilder),
    r#"CREATE INDEX "idx-glyph-aspect" ON "glyph" ("aspect")"#
);

Create index if not exists

use sea_query::{tests_cfg::*, *};

let index = Index::create()
    .if_not_exists()
    .name("idx-glyph-aspect")
    .table(Glyph::Table)
    .col(Glyph::Aspect)
    .to_owned();

assert_eq!(
    index.to_string(MysqlQueryBuilder),
    r#"CREATE INDEX `idx-glyph-aspect` ON `glyph` (`aspect`)"#
);
assert_eq!(
    index.to_string(PostgresQueryBuilder),
    r#"CREATE INDEX IF NOT EXISTS "idx-glyph-aspect" ON "glyph" ("aspect")"#
);
assert_eq!(
    index.to_string(SqliteQueryBuilder),
    r#"CREATE INDEX IF NOT EXISTS "idx-glyph-aspect" ON "glyph" ("aspect")"#
);

Index with prefix

use sea_query::{tests_cfg::*, *};

let index = Index::create()
    .name("idx-glyph-aspect")
    .table(Glyph::Table)
    .col((Glyph::Aspect, 128))
    .to_owned();

assert_eq!(
    index.to_string(MysqlQueryBuilder),
    r#"CREATE INDEX `idx-glyph-aspect` ON `glyph` (`aspect` (128))"#
);
assert_eq!(
    index.to_string(PostgresQueryBuilder),
    r#"CREATE INDEX "idx-glyph-aspect" ON "glyph" ("aspect" (128))"#
);
assert_eq!(
    index.to_string(SqliteQueryBuilder),
    r#"CREATE INDEX "idx-glyph-aspect" ON "glyph" ("aspect")"#
);

Index with order

use sea_query::{tests_cfg::*, *};

let index = Index::create()
    .name("idx-glyph-aspect")
    .table(Glyph::Table)
    .col((Glyph::Aspect, IndexOrder::Desc))
    .to_owned();

assert_eq!(
    index.to_string(MysqlQueryBuilder),
    r#"CREATE INDEX `idx-glyph-aspect` ON `glyph` (`aspect` DESC)"#
);
assert_eq!(
    index.to_string(PostgresQueryBuilder),
    r#"CREATE INDEX "idx-glyph-aspect" ON "glyph" ("aspect" DESC)"#
);
assert_eq!(
    index.to_string(SqliteQueryBuilder),
    r#"CREATE INDEX "idx-glyph-aspect" ON "glyph" ("aspect" DESC)"#
);

Index on multi-columns

use sea_query::{tests_cfg::*, *};

let index = Index::create()
    .name("idx-glyph-aspect")
    .table(Glyph::Table)
    .col((Glyph::Image, IndexOrder::Asc))
    .col((Glyph::Aspect, IndexOrder::Desc))
    .unique()
    .to_owned();

assert_eq!(
    index.to_string(MysqlQueryBuilder),
    r#"CREATE UNIQUE INDEX `idx-glyph-aspect` ON `glyph` (`image` ASC, `aspect` DESC)"#
);
assert_eq!(
    index.to_string(PostgresQueryBuilder),
    r#"CREATE UNIQUE INDEX "idx-glyph-aspect" ON "glyph" ("image" ASC, "aspect" DESC)"#
);
assert_eq!(
    index.to_string(SqliteQueryBuilder),
    r#"CREATE UNIQUE INDEX "idx-glyph-aspect" ON "glyph" ("image" ASC, "aspect" DESC)"#
);

Index with prefix and order

use sea_query::{tests_cfg::*, *};

let index = Index::create()
    .name("idx-glyph-aspect")
    .table(Glyph::Table)
    .col((Glyph::Aspect, 64, IndexOrder::Asc))
    .to_owned();

assert_eq!(
    index.to_string(MysqlQueryBuilder),
    r#"CREATE INDEX `idx-glyph-aspect` ON `glyph` (`aspect` (64) ASC)"#
);
assert_eq!(
    index.to_string(PostgresQueryBuilder),
    r#"CREATE INDEX "idx-glyph-aspect" ON "glyph" ("aspect" (64) ASC)"#
);
assert_eq!(
    index.to_string(SqliteQueryBuilder),
    r#"CREATE INDEX "idx-glyph-aspect" ON "glyph" ("aspect" ASC)"#
);

Implementations

impl IndexCreateStatement

pub fn new() -> IndexCreateStatement

Construct a new IndexCreateStatement

pub fn if_not_exists(&mut self) -> &mut IndexCreateStatement

Create index if index not exists

pub fn name<T>(&mut self, name: T) -> &mut IndexCreateStatement

where T: Into<String>,

Set index name

pub fn table<T>(&mut self, table: T) -> &mut IndexCreateStatement

where T: IntoTableRef,

Set target table

pub fn col<C>(&mut self, col: C) -> &mut IndexCreateStatement

where C: IntoIndexColumn,

Add index column

pub fn primary(&mut self) -> &mut IndexCreateStatement

Set index as primary

pub fn unique(&mut self) -> &mut IndexCreateStatement

Set index as unique

pub fn nulls_not_distinct(&mut self) -> &mut IndexCreateStatement

Set nulls to not be treated as distinct values. Only available on Postgres.

pub fn full_text(&mut self) -> &mut IndexCreateStatement

Set index as full text. On MySQL, this is FULLTEXT. On PgSQL, this is GIN.

pub fn index_type(&mut self, index_type: IndexType) -> &mut IndexCreateStatement

Set index type. Not available on Sqlite.

pub fn is_primary_key(&self) -> bool

pub fn is_unique_key(&self) -> bool

pub fn is_nulls_not_distinct(&self) -> bool

pub fn get_index_spec(&self) -> &TableIndex

pub fn take(&mut self) -> IndexCreateStatement

impl IndexCreateStatement

pub fn build<T>(&self, schema_builder: T) -> String

where T: SchemaBuilder,

See SchemaStatementBuilder::build

pub fn build_any(&self, schema_builder: &dyn SchemaBuilder) -> String

See SchemaStatementBuilder::build_any

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

where T: SchemaBuilder,

See SchemaStatementBuilder::to_string

Trait Implementations

impl Clone for IndexCreateStatement

fn clone(&self) -> IndexCreateStatement

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for IndexCreateStatement

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

Formats the value using the given formatter.

impl Default for IndexCreateStatement

fn default() -> IndexCreateStatement

Returns the “default value” for a type.

impl SchemaStatementBuilder for IndexCreateStatement

fn build<T>(&self, schema_builder: T) -> String

where T: SchemaBuilder,

Build corresponding SQL statement for certain database backend and return SQL string

fn build_any(&self, schema_builder: &dyn SchemaBuilder) -> String

Build corresponding SQL statement for certain database backend and return SQL string

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

where T: SchemaBuilder,

Build corresponding SQL statement for certain database backend and return SQL string

impl StatementBuilder for IndexCreateStatement

fn build(&self, db_backend: &DatabaseBackend) -> Statement

Method to call in order to build a Statement