Category: SQL

The SQL FLOOR function is used to return the largest integer that is less than or equal to a given numeric expression. In other words, it rounds down the input value to the nearest integer value. The syntax of the FLOOR function is as follows: FLOOR(numeric_expression) where numeric_expression is the value that needs to be…(Continue Reading)

In SQL, the CEILING function is used to round a numeric value up to the nearest integer or specified decimal places. The CEILING function returns the smallest integer that is greater than or equal to the specified numeric expression. Syntax The syntax for the CEILING function in SQL is as follows: CEILING(numeric_expression) Where numeric_expression is…(Continue Reading)

The SQL ROUND function is used to round a numeric value to a specified precision. It is a mathematical function that is commonly used in SQL queries to manipulate and format data. Syntax The syntax for the ROUND function is as follows: ROUND(numeric_expression, length [,function]) where: numeric_expression is the numeric value that you want to…(Continue Reading)

The SQL ABS function is a built-in mathematical function that is used to return the absolute (positive) value of a numeric expression. The ABS function is commonly used in SQL queries to perform calculations that involve positive numbers or to retrieve the absolute value of a negative number. Syntax The syntax of the ABS function…(Continue Reading)

SQL built-in functions are pre-defined functions that can be used to manipulate and perform operations on data stored in a database. These functions can be used to perform a wide range of tasks, such as performing calculations, transforming data, formatting data, and extracting data. They are an essential tool for data analysts, database administrators, and…(Continue Reading)

The SQL LAST_VALUE() function is a window function that retrieves the last value in a set of ordered rows within a partition. The function is typically used in conjunction with the OVER() clause to specify the partition and order criteria for the set of rows. Syntax The syntax for the LAST_VALUE() function is as follows:…(Continue Reading)

The SQL FIRST_VALUE() function is a window function that returns the first value of an ordered set of values within a group. It is commonly used in data analysis and reporting to retrieve the first value in a series of values based on a specified ordering. Syntax The syntax of the FIRST_VALUE() function is as…(Continue Reading)

The SQL LEAD() function is a window function that allows you to retrieve the value of a column from the next row within the same result set. This function is particularly useful when you need to compare the values of two consecutive rows in a table. Syntax The LEAD() function has the following syntax: LEAD(column,…(Continue Reading)

The SQL LAG() function is a powerful analytical function that allows you to access data from a previous row within a result set. Specifically, it allows you to retrieve data from a specified offset before the current row, based on the order of rows defined in the query. This function is useful for a wide…(Continue Reading)

SQL Analytical functions are a set of powerful tools that enable data analysts and developers to perform complex calculations and transformations on groups of data, without the need for complex sub-queries or multiple queries. They allow you to perform calculations over a set of rows that are related to each other. Analytical functions can be…(Continue Reading)