We typically use theCOUNT()function to count the number of rows in a result set. Often, we include a WHERE condition in the query to filter rows before performing the count. When we need to count the same column differently, we usually write multiple queries with different WHERE conditions....
SQL WHERE Summary: in this tutorial, you will learn how to use theSQL WHEREclause in the SELECT statement to filter rows in a result set. You use theWHEREclause in the SQL statements such asSELECT,UPDATEandDELETEto filter rows that do not meet a specified condition....
So imagine a large collection, with let's say over 1 million documents and you have to run a query like this. The WiredTiger Internal cache will have to keep all that data in the cache if you have to run this query on it, if not that data will be fed into the WT Inter...
In some implementations of SQL, the plus sign does double duty as a character operator. You'll see that side of the plus sign a little later today.Minus (-)Minus also has two uses. First, it can change the sign of a number. You can use the table HILOW to demonstrate this function....
SQL INSERT INTO: The Librarian of Data Management Just like the librarian who knows exactly where each book belongs, SQL INSERT INTO statement is the key to adding new data to your database tables. But what is it, and when should you use it?
As mentioned in the introduction, this guide focuses on how to use SQL’s comparison andIS NULLoperators to filter data. If you’d like to learn how to use theBETWEENorINoperators with range and membership predicates, respectively, we encourage you to check out this guide onHow To Use the...
How to use If condition in Joins How to use if else condition in case statement using sql server 2008? how to use IF statement in subquery how to use IF-THEN-ELSE in a inline table-valued function how to use iif in sql server 2008? How to use like operator in dynamic query? How ...
Other databases use the CONTAINS function in different ways – it doesn’t necessarily mean the same in SQL Server, for instance, that it means in PostgreSQL. For more information please check out your respective database’s documentation. For more information about the LIKE clause, please take...
How do I add a if condition in SQL Query? QuestionHi Community, I am looking to add an if condition in the query. Something like this: if {Notification).[SMSSeen]=1, then run the LEFT JOIN {UserSMSRespond} ON {UserSMSRespond}.[MobileNumber] = {Ticket}.[ContactNo] else don't ...
How to use If condition in Joins How to use if else condition in case statement using sql server 2008? how to use IF statement in subquery how to use IF-THEN-ELSE in a inline table-valued function how to use iif in sql server 2008? How to use like operator in dynamic query? How...