Struct leetcode_tui_rs::migrations::DeleteStatement

pub struct DeleteStatement { /* private fields */ }

Delete existing rows from the table

Examples

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

let query = Query::delete()
    .from_table(Glyph::Table)
    .cond_where(any![
        Expr::col(Glyph::Id).lt(1),
        Expr::col(Glyph::Id).gt(10),
    ])
    .to_owned();

assert_eq!(
    query.to_string(MysqlQueryBuilder),
    r#"DELETE FROM `glyph` WHERE `id` < 1 OR `id` > 10"#
);
assert_eq!(
    query.to_string(PostgresQueryBuilder),
    r#"DELETE FROM "glyph" WHERE "id" < 1 OR "id" > 10"#
);
assert_eq!(
    query.to_string(SqliteQueryBuilder),
    r#"DELETE FROM "glyph" WHERE "id" < 1 OR "id" > 10"#
);

Implementations

impl DeleteStatement

pub fn new() -> DeleteStatement

Construct a new DeleteStatement

pub fn from_table<T>(&mut self, tbl_ref: T) -> &mut DeleteStatementwhere T: IntoTableRef,

Specify which table to delete from.

Examples

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

let query = Query::delete()
    .from_table(Glyph::Table)
    .and_where(Expr::col(Glyph::Id).eq(1))
    .to_owned();

assert_eq!(
    query.to_string(MysqlQueryBuilder),
    r#"DELETE FROM `glyph` WHERE `id` = 1"#
);
assert_eq!(
    query.to_string(PostgresQueryBuilder),
    r#"DELETE FROM "glyph" WHERE "id" = 1"#
);
assert_eq!(
    query.to_string(SqliteQueryBuilder),
    r#"DELETE FROM "glyph" WHERE "id" = 1"#
);

pub fn limit(&mut self, limit: u64) -> &mut DeleteStatement

Limit number of updated rows.

pub fn returning( &mut self, returning_cols: ReturningClause ) -> &mut DeleteStatement

RETURNING expressions.

Examples

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

let query = Query::delete()
    .from_table(Glyph::Table)
    .and_where(Expr::col(Glyph::Id).eq(1))
    .returning(Query::returning().columns([Glyph::Id]))
    .to_owned();

assert_eq!(
    query.to_string(MysqlQueryBuilder),
    r#"DELETE FROM `glyph` WHERE `id` = 1"#
);
assert_eq!(
    query.to_string(PostgresQueryBuilder),
    r#"DELETE FROM "glyph" WHERE "id" = 1 RETURNING "id""#
);
assert_eq!(
    query.to_string(SqliteQueryBuilder),
    r#"DELETE FROM "glyph" WHERE "id" = 1 RETURNING "id""#
);

pub fn returning_col<C>(&mut self, col: C) -> &mut DeleteStatementwhere C: IntoColumnRef,

RETURNING expressions for a column.

Examples

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

let query = Query::delete()
    .from_table(Glyph::Table)
    .and_where(Expr::col(Glyph::Id).eq(1))
    .returning_col(Glyph::Id)
    .to_owned();

assert_eq!(
    query.to_string(MysqlQueryBuilder),
    r#"DELETE FROM `glyph` WHERE `id` = 1"#
);
assert_eq!(
    query.to_string(PostgresQueryBuilder),
    r#"DELETE FROM "glyph" WHERE "id" = 1 RETURNING "id""#
);
assert_eq!(
    query.to_string(SqliteQueryBuilder),
    r#"DELETE FROM "glyph" WHERE "id" = 1 RETURNING "id""#
);

pub fn returning_all(&mut self) -> &mut DeleteStatement

RETURNING expressions all columns.

Examples

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

let query = Query::delete()
    .from_table(Glyph::Table)
    .and_where(Expr::col(Glyph::Id).eq(1))
    .returning_all()
    .to_owned();

assert_eq!(
    query.to_string(MysqlQueryBuilder),
    r#"DELETE FROM `glyph` WHERE `id` = 1"#
);
assert_eq!(
    query.to_string(PostgresQueryBuilder),
    r#"DELETE FROM "glyph" WHERE "id" = 1 RETURNING *"#
);
assert_eq!(
    query.to_string(SqliteQueryBuilder),
    r#"DELETE FROM "glyph" WHERE "id" = 1 RETURNING *"#
);

pub fn with(self, clause: WithClause) -> WithQuery

Create a WithQuery by specifying a WithClause to execute this query with.

Examples

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

let select = SelectStatement::new()
        .columns([Glyph::Id])
        .from(Glyph::Table)
        .and_where(Expr::col(Glyph::Image).like("0%"))
        .to_owned();
    let cte = CommonTableExpression::new()
        .query(select)
        .column(Glyph::Id)
        .table_name(Alias::new("cte"))
        .to_owned();
    let with_clause = WithClause::new().cte(cte).to_owned();
    let update = DeleteStatement::new()
        .from_table(Glyph::Table)
        .and_where(Expr::col(Glyph::Id).in_subquery(SelectStatement::new().column(Glyph::Id).from(Alias::new("cte")).to_owned()))
        .to_owned();
    let query = update.with(with_clause);

assert_eq!(
    query.to_string(MysqlQueryBuilder),
    r#"WITH `cte` (`id`) AS (SELECT `id` FROM `glyph` WHERE `image` LIKE '0%') DELETE FROM `glyph` WHERE `id` IN (SELECT `id` FROM `cte`)"#
);
assert_eq!(
    query.to_string(PostgresQueryBuilder),
    r#"WITH "cte" ("id") AS (SELECT "id" FROM "glyph" WHERE "image" LIKE '0%') DELETE FROM "glyph" WHERE "id" IN (SELECT "id" FROM "cte")"#
);
assert_eq!(
    query.to_string(SqliteQueryBuilder),
    r#"WITH "cte" ("id") AS (SELECT "id" FROM "glyph" WHERE "image" LIKE '0%') DELETE FROM "glyph" WHERE "id" IN (SELECT "id" FROM "cte")"#
);

impl DeleteStatement

pub fn to_string<T>(&self, query_builder: T) -> Stringwhere T: QueryBuilder,

pub fn build<T>(&self, query_builder: T) -> (String, Values)where T: QueryBuilder,

pub fn build_any(&self, query_builder: &dyn QueryBuilder) -> (String, Values)

impl DeleteStatement

pub fn order_by<T>(&mut self, col: T, order: Order) -> &mut DeleteStatementwhere T: IntoColumnRef,

pub fn order_by_expr( &mut self, expr: SimpleExpr, order: Order ) -> &mut DeleteStatement

pub fn order_by_customs<I, T>(&mut self, cols: I) -> &mut DeleteStatementwhere T: ToString, I: IntoIterator<Item = (T, Order)>,

pub fn order_by_columns<I, T>(&mut self, cols: I) -> &mut DeleteStatementwhere T: IntoColumnRef, I: IntoIterator<Item = (T, Order)>,

impl DeleteStatement

pub fn and_where(&mut self, other: SimpleExpr) -> &mut DeleteStatement

pub fn and_where_option( &mut self, other: Option<SimpleExpr> ) -> &mut DeleteStatement

pub fn cond_where<C>(&mut self, condition: C) -> &mut DeleteStatementwhere C: IntoCondition,

Trait Implementations

impl Clone for DeleteStatement

fn clone(&self) -> DeleteStatement

Returns a copy of the value.

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

Performs copy-assignment from source.

impl ConditionalStatement for DeleteStatement

fn cond_where<C>(&mut self, condition: C) -> &mut DeleteStatementwhere C: IntoCondition,

Where condition, expressed with any and all. Calling cond_where multiple times will conjoin them. Calling or_where after cond_where will panic.

fn and_where(&mut self, other: SimpleExpr) -> &mut Self

And where condition. Calling or_where after and_where will panic.

fn and_where_option(&mut self, other: Option<SimpleExpr>) -> &mut Self

Optional and where, short hand for if c.is_some() q.and_where(c).

impl Debug for DeleteStatement

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

Formats the value using the given formatter.

impl Default for DeleteStatement

fn default() -> DeleteStatement

Returns the “default value” for a type.

impl OrderedStatement for DeleteStatement

fn clear_order_by(&mut self) -> &mut DeleteStatement

Clear order expressions

fn order_by<T>(&mut self, col: T, order: Order) -> &mut Selfwhere T: IntoColumnRef,

Order by column.

fn order_by_expr(&mut self, expr: SimpleExpr, order: Order) -> &mut Self

Order by SimpleExpr.

fn order_by_customs<I, T>(&mut self, cols: I) -> &mut Selfwhere T: ToString, I: IntoIterator<Item = (T, Order)>,

Order by custom string.

fn order_by_columns<I, T>(&mut self, cols: I) -> &mut Selfwhere T: IntoColumnRef, I: IntoIterator<Item = (T, Order)>,

Order by vector of columns.

fn order_by_with_nulls<T>( &mut self, col: T, order: Order, nulls: NullOrdering ) -> &mut Selfwhere T: IntoColumnRef,

Order by column with nulls order option.

fn order_by_expr_with_nulls( &mut self, expr: SimpleExpr, order: Order, nulls: NullOrdering ) -> &mut Self

Order by SimpleExpr with nulls order option.

fn order_by_customs_with_nulls<I, T>(&mut self, cols: I) -> &mut Selfwhere T: ToString, I: IntoIterator<Item = (T, Order, NullOrdering)>,

Order by custom string with nulls order option.

fn order_by_columns_with_nulls<I, T>(&mut self, cols: I) -> &mut Selfwhere T: IntoColumnRef, I: IntoIterator<Item = (T, Order, NullOrdering)>,

Order by vector of columns with nulls order option.

impl QueryStatementBuilder for DeleteStatement

fn build_collect_any_into( &self, query_builder: &dyn QueryBuilder, sql: &mut dyn SqlWriter )

Build corresponding SQL statement into the SqlWriter for certain database backend and collect query parameters

fn into_sub_query_statement(self) -> SubQueryStatement

fn build_any(&self, query_builder: &dyn QueryBuilder) -> (String, Values)

Build corresponding SQL statement for certain database backend and collect query parameters into a vector

fn build_collect_any( &self, query_builder: &dyn QueryBuilder, sql: &mut dyn SqlWriter ) -> String

Build corresponding SQL statement for certain database backend and collect query parameters

impl QueryStatementWriter for DeleteStatement

fn build_collect_into<T>(&self, query_builder: T, sql: &mut dyn SqlWriter)where T: QueryBuilder,

fn to_string<T>(&self, query_builder: T) -> Stringwhere T: QueryBuilder,

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

fn build<T>(&self, query_builder: T) -> (String, Values)where T: QueryBuilder,

Build corresponding SQL statement for certain database backend and collect query parameters into a vector

fn build_collect<T>(&self, query_builder: T, sql: &mut dyn SqlWriter) -> Stringwhere T: QueryBuilder,

Build corresponding SQL statement for certain database backend and collect query parameters

impl SqlxBinder for DeleteStatement

fn build_sqlx<T>(&self, query_builder: T) -> (String, SqlxValues)where T: QueryBuilder,

fn build_any_sqlx( &self, query_builder: &dyn QueryBuilder ) -> (String, SqlxValues)

impl StatementBuilder for DeleteStatement

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

Method to call in order to build a Statement