Operator | Meaning | Operates on |
---|---|---|

* (Multiply) | Multiplication | Numeric value |

/ (Divide) | Division | Numeric value |

% (Modulo) | Returns the integer remainder of a division. For example, 17 % 5 = 2 because the remainder of 17 divided by 5 is 2. | Numeric value |

## How do you divide and sum in SQL?

**2 Answers**

- Your where clause is using the time on getdate() . More likely you want: date > dateadd(day, -7, cast(getdate() as date)) .
- The NULLIF() prevents division by 0.
- Your calculation is a ration, not a percent. Perhaps you intend: SUM(CountFail) * 100.0 / NULLIF(SUM(CountWin + CountFail))

## How do you do calculations in SQL?

You can **use the string expression argument in an SQL aggregate function** to perform a calculation on values in a field. For example, you could calculate a percentage (such as a surcharge or sales tax) by multiplying a field value by a fraction.

## How do you multiple in SQL?

All you need to do is use the multiplication operator (*) between the two multiplicand columns ( price * quantity ) in a simple SELECT query. You can give this result an alias with the AS keyword; in our example, we gave the multiplication column an alias of total_price .

## How do you subtract in SQL?

To use the MINUS operator, you write individual **SELECT statements** and place the MINUS operator between them. The MINUS operator returns the unique rows produced by the first query but not by the second one.

## What does over mean in SQL?

That **is, the OVER** clause defines a window or user-specified set of rows within a query result set. A window function then computes a value for each row in the window.

## How do I get the sum of a column in SQL?

**Sum of all values in a column:**

- For this, we need to use the sum() function. We have to pass the column name as a parameter.
- This sum() function can be used with the SELECT query for retrieving data from the table.
- The below example shows to find the sum of all values in a column.

## How do you calculate queries?

**Create a calculated field in a query**

- In the Navigation Pane, right-click the query that you want to change, and then click Design View on the shortcut menu.
- Click the Field cell in the column where you want to create the calculated field.
- To manually create your expression, type your expression.

## How do you calculate percentage?

**How To Calculate Percent**

- Determine the total or whole amount.
- Divide the number to be expressed as a percent by the total. In most cases, you’ll divide the smaller number by the larger number.
- Multiple the resulting value by 100.

## How do I do an if statement in SQL?

The IF statement is logically equivalent to a CASE statements with a **searched-case-statement-when** clause. The IF statement supports the use of optional ELSE IF clauses and a default ELSE clause. An END IF clause is required to indicate the end of the statement.

## Can you inner join 3 tables?

We’ve used **INNER JOIN 2 times** in order to join 3 tables. This will result in returning only rows having pairs in another table. When you’re using only INNER JOINs to join multiple tables, the order of these tables in joins is not important.

## How do I write a SQL JOIN?

The join is done by **the JOIN operator**. In the FROM clause, the name of the first table ( product ) is followed by a JOIN keyword then by the name of the second table ( category ). This is then followed by the keyword ON and by the condition for joining the rows from the different tables.

## How does between work in SQL?

The **SQL BETWEEN** condition allows you to easily test if an expression is within a range of values (inclusive). The values **can** be text, date, or numbers. It **can** be used in a SELECT, INSERT, UPDATE, or DELETE statement.