SQL Server COT()

SQL Server COT() Function

The SQL Server COT() function returns the cotangent of a specified angle in radians. This function is useful for performing trigonometric calculations.

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Syntax

SELECT COT(angle);

The COT() function takes a single argument:

• angle: The angle in radians for which to calculate the cotangent.

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Example SQL Server COT() Function Queries

Let's look at some examples of SQL Server COT() function queries:

1. Basic COT() Example

SELECT COT(PI()/4) AS result;

This query returns the cotangent of π/4 radians (45 degrees). The result will be:

result
------
1.0

2. COT() with π/2 Radians

SELECT COT(PI()/2) AS result;

This query returns the cotangent of π/2 radians (90 degrees). The result will be:

result
------
6.123233995736766E-17

3. COT() with a Column

SELECT angle_value, COT(angle_value) AS cot_value
FROM angles;

This query returns the cotangent of the angle_value column for each record in the angles table. The result will show the original angle_value and its corresponding cotangent as cot_value.

4. COT() with a Variable

DECLARE @angle FLOAT;
SET @angle = PI()/3;
SELECT COT(@angle) AS result;

This query uses a variable to store an angle and then returns its cotangent. The result will be:

result
------
0.5773502691896257

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Full Example

Let's go through a complete example that includes creating a table, inserting data, and using the COT() function.

Step 1: Creating a Table

This step involves creating a new table named example_table to store some sample data.

CREATE TABLE example_table (
    id INT PRIMARY KEY,
    angle_value FLOAT
);

In this example, we create a table named example_table with columns for id and angle_value.

Step 2: Inserting Data into the Table

This step involves inserting some sample data into the example_table.

INSERT INTO example_table (id, angle_value) VALUES (1, PI()/4);
INSERT INTO example_table (id, angle_value) VALUES (2, PI()/2);
INSERT INTO example_table (id, angle_value) VALUES (3, PI()/3);
INSERT INTO example_table (id, angle_value) VALUES (4, PI());

Here, we insert data into the example_table.

Step 3: Using the COT() Function

This step involves using the COT() function to return the cotangent of the angle_value column.

SELECT id, angle_value, COT(angle_value) AS cot_value
FROM example_table;

This query retrieves the id, angle_value, and the cotangent of the angle_value column for each row in the example_table. The result will be:

id  angle_value  cot_value
--- ------------ ---------
1   0.7853981634 1.0
2   1.5707963268 6.123233995736766E-17
3   1.0471975512 0.5773502691896257
4   3.1415926536 -8.165619676597685E15

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Conclusion

The SQL Server COT() function is a powerful tool for returning the cotangent of a specified angle in radians. Understanding how to use the COT() function and its syntax is essential for effective trigonometric calculations and data processing in SQL Server.