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Add mul and div for SimpleExpr #510

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Nov 7, 2022
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Add mul and div for SimpleExpr #510

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74 changes: 74 additions & 0 deletions src/expr.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2501,6 +2501,80 @@ impl SimpleExpr {
self.binary(BinOper::Add, right.into())
}

/// Perform multiplication with another [`SimpleExpr`].
///
/// # Examples
///
/// ```
/// use sea_query::{tests_cfg::*, *};
///
/// let query = Query::select()
/// .expr(
/// Expr::col(Char::SizeW)
/// .max()
/// .mul(Expr::col(Char::SizeH).max()),
/// )
/// .from(Char::Table)
/// .to_owned();
///
/// assert_eq!(
/// query.to_string(MysqlQueryBuilder),
/// r#"SELECT MAX(`size_w`) * MAX(`size_h`) FROM `character`"#
/// );
/// assert_eq!(
/// query.to_string(PostgresQueryBuilder),
/// r#"SELECT MAX("size_w") * MAX("size_h") FROM "character""#
/// );
/// assert_eq!(
/// query.to_string(SqliteQueryBuilder),
/// r#"SELECT MAX("size_w") * MAX("size_h") FROM "character""#
/// );
/// ```
#[allow(clippy::should_implement_trait)]
pub fn mul<T>(self, right: T) -> Self
where
T: Into<SimpleExpr>,
{
self.binary(BinOper::Mul, right.into())
}

/// Perform division with another [`SimpleExpr`].
///
/// # Examples
///
/// ```
/// use sea_query::{tests_cfg::*, *};
///
/// let query = Query::select()
/// .expr(
/// Expr::col(Char::SizeW)
/// .max()
/// .div(Expr::col(Char::SizeH).max()),
/// )
/// .from(Char::Table)
/// .to_owned();
///
/// assert_eq!(
/// query.to_string(MysqlQueryBuilder),
/// r#"SELECT MAX(`size_w`) / MAX(`size_h`) FROM `character`"#
/// );
/// assert_eq!(
/// query.to_string(PostgresQueryBuilder),
/// r#"SELECT MAX("size_w") / MAX("size_h") FROM "character""#
/// );
/// assert_eq!(
/// query.to_string(SqliteQueryBuilder),
/// r#"SELECT MAX("size_w") / MAX("size_h") FROM "character""#
/// );
/// ```
#[allow(clippy::should_implement_trait)]
pub fn div<T>(self, right: T) -> Self
where
T: Into<SimpleExpr>,
{
self.binary(BinOper::Div, right.into())
}

/// Perform subtraction with another [`SimpleExpr`].
///
/// # Examples
Expand Down