Struct sea_query::types::Asterisk

pub struct Asterisk;

Asterisk (“*”)

Express the asterisk without table prefix.

Examples

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

let query = Query::select()
    .column(Asterisk)
    .from(Char::Table)
    .to_owned();

assert_eq!(
    query.to_string(MysqlQueryBuilder),
    r#"SELECT * FROM `character`"#
);
assert_eq!(
    query.to_string(PostgresQueryBuilder),
    r#"SELECT * FROM "character""#
);
assert_eq!(
    query.to_string(SqliteQueryBuilder),
    r#"SELECT * FROM "character""#
);

Express the asterisk with table prefix.

Examples

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

let query = Query::select()
    .column((Char::Table, Asterisk))
    .from(Char::Table)
    .to_owned();

assert_eq!(
    query.to_string(MysqlQueryBuilder),
    r#"SELECT `character`.* FROM `character`"#
);
assert_eq!(
    query.to_string(PostgresQueryBuilder),
    r#"SELECT "character".* FROM "character""#
);
assert_eq!(
    query.to_string(SqliteQueryBuilder),
    r#"SELECT "character".* FROM "character""#
);

Trait Implementations

impl Clone for Asterisk

fn clone(&self) -> Asterisk

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Asterisk

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

Formats the value using the given formatter.

impl Default for Asterisk

fn default() -> Asterisk

Returns the “default value” for a type.

impl IntoColumnRef for Asterisk

fn into_column_ref(self) -> ColumnRef

impl Copy for Asterisk