SQL functions are pre-written actions that can be called on individual cells, multiple cells in a record or multiple records.
Syntax of SQL CONCAT function CONCAT ( string1, string2….stringN) We require at least two values to concatenate together and specify in the SQL CONCAT function. Examples Let’s explore SQL CONCAT with an example. The following query, concatenate string and gives output as a single string...
This article explains the functionality and uses of the LEFT, RIGHT, SUBSTRING and CHARINDEX functions in SQL. This article will leave you with sound knowledge and understanding that you can take away and questions will be asked no more. ...
SQL Server has several different date and time functions and trying to remember every function is not that easy. So, I put together this tutorial that shows the different date and time functions all in one place along with examples to make finding what you are looking for much easier. ...
Spark SQL Example Consider a scenario where you wish to create and load two tables along with selecting rows from the tables. Let us use Spark SQL to implement this. As the first step, copy the Hue sample_07.csv and sample_08.csv files to your object store in a location that can be...
DBMS | Aggregate Functions: In this tutorial, we will learn about the different types of aggregate functions with their usage, syntax, and examples in DBMS.
SQL stored proceduresare implemented as a set of T-SQL queries with a specific name (i.e. procedure name). They are stored in the RDBMS to be used and reused by various users and programs. Stored procedures can be used to maintain the security of your data by only giving people specific...
the same purpose as their equivalents in MS Excel, but the magic is that you can query data and apply functions in the same statement. Today, we’ve seen basic examples. Later in this series, we’ll use them to solve more complicated problems (with more complicated queries), so stay ...
Transact-SQL provides the following ranking functions: Expand table RANK NTILE DENSE_RANK ROW_NUMBER Examples The following shows the four ranking functions used in the same query. For function specific examples, see each ranking function. Copy USE AdventureWorks2008R2; GO SELECT p.FirstName, p...
For starters, the LEAD and LAG functions were first introduced in SQL Server 2012. They are window functions. The LEAD function is used to access data fromSUBSEQUENTrows along with data from the current row. The LAG function is used to access data fromPREVIOUSrows along with data from the ...