Trait sea_query::extension::sqlite::SqliteExpr

source · 
pub trait SqliteExpr: Expression {
    fn matches<T>(self, right: T) -> SimpleExpr
    where
        T: Into<SimpleExpr>,
    { ... }
    fn get_json_field<T>(self, right: T) -> SimpleExpr
    where
        T: Into<SimpleExpr>,
    { ... }
    fn cast_json_field<T>(self, right: T) -> SimpleExpr
    where
        T: Into<SimpleExpr>,
    { ... }
}
Available on crate feature backend-sqlite only.

Provided Methods§

Express an sqlite MATCH operator.

Examples
use sea_query::{extension::sqlite::SqliteExpr, tests_cfg::*, *};

let query = Query::select()
    .column(Font::Name)
    .from(Font::Table)
    .and_where(Expr::col(Font::Name).matches("a"))
    .to_owned();

assert_eq!(
    query.to_string(SqliteQueryBuilder),
    r#"SELECT "name" FROM "font" WHERE "name" MATCH 'a'"#
);

Express an sqlite retrieves JSON field as JSON value (->).

Examples
use sea_query::{extension::sqlite::SqliteExpr, tests_cfg::*, *};

let query = Query::select()
    .column(Font::Variant)
    .from(Font::Table)
    .and_where(Expr::col(Font::Variant).get_json_field("a"))
    .to_owned();

assert_eq!(
    query.to_string(SqliteQueryBuilder),
    r#"SELECT "variant" FROM "font" WHERE "variant" -> 'a'"#
);

Express an sqlite retrieves JSON field and casts it to an appropriate SQL type (->>).

Examples
use sea_query::{extension::sqlite::SqliteExpr, tests_cfg::*, *};

let query = Query::select()
    .column(Font::Variant)
    .from(Font::Table)
    .and_where(Expr::col(Font::Variant).cast_json_field("a"))
    .to_owned();

assert_eq!(
    query.to_string(SqliteQueryBuilder),
    r#"SELECT "variant" FROM "font" WHERE "variant" ->> 'a'"#
);

Implementors§