How to write addition, subtraction, multiplication and division in oracle

How to write addition, subtraction, multiplication and division in oracle: 1. For addition operations, you can use the plus sign " " to implement the code "Column Name 1 Column Name 2 AS sum"; 2. For subtraction operations, you can use the minus sign "-" To achieve, the code "column name 1 - column name 2 AS difference"; 3. Multiplication operation, you can use the multiplication sign "*" to achieve, the code "column name 1 * column name 2 AS product"; 4. Division operation, you can Use the division sign "/" to achieve this, the code is "column name 1/column name 2 AS quotient".

The operating environment of this article: Windows 10 system, Oracle version 19c, Dell G3 computer.

Oracle is a commonly used relational database management system that provides rich functions and powerful computing capabilities. In Oracle, addition, subtraction, multiplication and division operations can be implemented through SQL statements. This article will introduce how to perform addition, subtraction, multiplication and division operations in Oracle and provide some sample code.

1. Addition operation:

In Oracle, addition operation can be implemented using the plus sign ( ). The following is a sample code that demonstrates how to perform addition operations in Oracle:

SELECT column1 + column2 AS sum
FROM table;

Among them, `column1` and `column2` are the column names to be added, and `table` is the table to be added. name. After running the above code, a result set named `sum` will be returned, which contains the result of adding `column1` and `column2`.

2. Subtraction operation:

In Oracle, subtraction operation can be implemented using the minus sign (-). The following is a sample code that demonstrates how to perform subtraction in Oracle:

SELECT column1 - column2 AS difference
FROM table;

Where, `column1` and `column2` are the column names to be subtracted, and `table` is the table to be subtracted name. After running the above code, a result set named `difference` will be returned, which contains the result of the subtraction of `column1` and `column2`.

3. Multiplication operation:

In Oracle, multiplication operation can be implemented using the multiplication sign (*). The following is a sample code that demonstrates how to perform multiplication in Oracle:

SELECT column1 * column2 AS product
FROM table;

Where, `column1` and `column2` are the column names to be multiplied, and `table` is the table to be multiplied. name. After running the above code, a result set named `product` will be returned, which contains the result of multiplying `column1` and `column2`.

4. Division operation:

In Oracle, division operation can be implemented using the division sign (/). The following is a sample code that demonstrates how to perform division operations in Oracle:

SELECT column1 / column2 AS quotient
FROM table;

Where, `column1` and `column2` are the column names to be divided, and `table` is the table to be divided. name. After running the above code, a result set named `quotient` will be returned, which contains the result of the division of `column1` and `column2`.

It should be noted that when performing division operation, if the divisor is 0, an error will occur. To avoid this situation, you can use the `NULLIF` function. The following is a sample code:

SELECT column1 / NULLIF(column2, 0) AS quotient
FROM table;

In the above code, the `NULLIF` function will convert the divisor by 0 into NULL to avoid errors.

Summary:

This article introduces the method of addition, subtraction, multiplication and division in Oracle, and provides corresponding sample code. By using these operators and functions, various complex calculation operations can be implemented in Oracle.

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