Cos

2005
2008
2012
2014
2016
2017
2019
2022

2005, 2008, 2012, 2014, 2016, 2017, 2019, 2022

Cos (Cosine) Mathematical Function

Use the Cos function to return the cosine of the specified expression.

Syntax

db.fx.Cos({expression})

Arguments

expression: – The value to use in the cosine calculation.

Returns

float

Examples

Select Statement

Select the cosine of a product's weight (which is nullable in the database).

float? result = db.SelectOne(
        db.fx.Cos(dbo.Product.Weight)
    )
    .From(dbo.Product)
    .Execute();

Where Clause

Select the cosine of a product's depth (which is nullable in the database).

float? result = db.SelectOne(
        db.fx.Cos(dbo.Product.Depth)
    )
    .From(dbo.Product)
    .Execute();

Order By Clause

Select and order by the cosine of a product's depth.

IEnumerable<Product> result = db.SelectMany<Product>()
    .From(dbo.Product)
    .OrderBy(db.fx.Cos(dbo.Product.Depth).Desc())
    .Execute();

Group By Clause

Select product details grouped by product category and the cosine of the product's depth.

IEnumerable<dynamic> results = db.SelectMany(
        dbo.Product.ProductCategoryType,
        db.fx.Cos(dbo.Product.Depth).As("calculated_value")
    )
    .From(dbo.Product)
    .GroupBy(
        dbo.Product.ProductCategoryType,
        db.fx.Cos(dbo.Product.Depth)
    )
    .Execute();

Having Clause

Select the ids of all products, grouped by product category type having a cosine of the product's height greater than the product's width.

IEnumerable<ProductCategoryType?> results = db.SelectMany(
        dbo.Product.ProductCategoryType
    )
    .From(dbo.Product)
    .GroupBy(
        dbo.Product.ProductCategoryType,
        db.fx.Cos(dbo.Product.Height),
        dbo.Product.Width
    )
    .Having(
        db.fx.Cos(dbo.Product.Height) > dbo.Product.Width
    )
    .Execute();