Everyone who uses SQL Server knows that to update multiple rows in a table you have to insert into a temporary table, select from the temporary table and then perform the update. Given that, I wrote an update statement that would allow you to do this using a single query string.
Currently working as a Microsoft Certified Application Developer, I’ve been using SQL since 2005. This article will explain how to use update multiple rows in one SQL query.
Update Multiple Rows In Sql Server With Single Update Query
UPDATE table SET column1 = value1, column2 = value2 WHERE …
To update multiple rows at once, you can use the same syntax as that of UPDATE statement. In this case, you can also specify multiple columns and corresponding values in the SET clause.
You can use * (asterisk) to indicate all columns in the table. However, it is not recommended because of performance issues.
SQL UPDATE statement is used to update data in the table.
You can use SQL UPDATE statement to update one or more rows of a table at once.
SQL UPDATE Syntax:
UPDATE table_name SET column1 = expression1, column2 = expression2 WHERE condition;
Here, table_name specifies the name of the table to be updated, column1 and column2 specify the names of columns whose values should be updated and expression1 and expression2 are the expressions that define what values should be updated. The condition is optional, if it is not specified then all rows will be updated.
Explanation:
The above syntax explains how to UPDATE data in a database using SQL statements. You can update one or more rows at once by using an UPDATE statement in SQL Server 2008 R2. There are some important points regarding this query: If you want to update only specific rows then you have to use WHERE clause in your query while updating data. If you leave out WHERE clause then all rows will be affected by your query which means all rows will be affected by your query which means all rows will be affected by your query which means all rows will be affected by your
In this article, I am going to explain how to update multiple rows in SQL Server. This scenario can be useful if you want to update the same column value for multiple rows.
I have created a sample table named SalesOrders in SQL Server database. The table contains three columns: OrderID, CustomerID and OrderDate.
I have inserted some sample records in this table by executing the following query:
USE AdventureWorks; GO CREATE TABLE SalesOrders (OrderID int IDENTITY(1,1) PRIMARY KEY CLUSTERED NOT NULL, CustomerID int NOT NULL, OrderDate datetime NOT NULL); GO INSERT INTO SalesOrders VALUES(1,’NW’,’2008-01-02′); GO INSERT INTO SalesOrders VALUES(2,’NW’,’2008-01-03′); GO INSERT INTO SalesOrders VALUES(3,’NW’,’2008-01-04′); GO INSERT INTO SalesOrders VALUES(4,’NW’,’2008-01-05′); GO INSERT INTO SalesOrders VALUES(5,’SW’,’2008-01-06′); GO INSERT INTO SalesOrders VALUES(6,’SW’,’2008-01-07′); GO 1 2 3 4
UPDATE table SET column = value
This is the simplest form of SQL update statement. The above statement will update all the rows in the table with column value equal to value.
UPDATE table SET column1 = value1, column2 = value2
The above statement will update all the rows in the table where columns are equal to value1 and value2.
UPDATE table SET column1 = value1, column2 = value2 WHERE condition
The above statement will update all the rows in the table where columns are equal to value1 and value2 and condition is true.
UPDATE customer SET customer_id = 2 WHERE customer_id = 1;
The above query will update all rows with customer_id = 1.
If you want to update specific row then check out below examples:
UPDATE employee SET salary = 2000.00 WHERE id = 1;
UPDATE Table1 SET Value1 = ‘UpdatedValue1’ WHERE Column1 = ‘ColumnValue’
Table1 is a table that has the column called “Column1” and it’s value is “ColumnValue”.
If you want to update multiple rows of single column in sql, then you can use the following query
UPDATE Table1 SET Value2 = ‘UpdatedValue2’ WHERE Column2 = ‘ColumnValue2’
How to Update Multiple Rows in SQL Server
SQL Server has several ways to update multiple rows. You can use the UPDATE statement with a SELECT clause and WHERE clause, or you can use the MERGE statement. The MERGE statement is used when you want to bring data together from multiple tables and perform the same action on all of them. This article describes how to use both of these methods.
There are several ways to update multiple rows in a table. The most common way is through the use of an UPDATE statement. In this article, we’re going to show you how to update multiple rows in SQL Server using various methods.
This query will update all values in the column named “price” by multiplying them by 1.2. The UPDATE statement can be used with any number of columns and expressions for each column. The order in which you specify the columns does not matter, and if you include more than one expression for a given column, they are evaluated from left to right (if you want them evaluated from right to left instead, then use parentheses).
Example: Update Multiple Rows Using a SELECT Statement
The following example shows how to update multiple rows using an UPDATE statement with a SELECT clause and WHERE clause:
USE AdventureWorks2012; GO — Query all rows that meet the criteria and then update them — using an UPDATE statement UPDATE Sales.SalesOrderHeader SET ModifiedDate = ’12/5/2008′ WHERE SalesOrderID IN(SELECT SalesOrderID FROM Sales.SalesOrderDetail WHERE ProductID = ‘P008′) GO — Query all rows that meet the criteria and then update them — using an UPDATE statement UPDATE Sales.SalesOrderHeader SET ModifiedDate = ’12/5/2008’ WHERE SalesOrderID IN(SELECT SalesOrderID FROM Sales.SalesOrderDetail WHERE ProductID = ‘P008’) GO.
UPDATE [TableName] SET [Column1] = ‘New Value’, [Column2] = ‘New Value’ WHERE [ID] = 1;
This query will update the first row in the table with ID equal to 1.
UPDATE [TableName] SET [Column1] = ‘New Value’, [Column2] = ‘New Value’ FROM (SELECT 1, 2) AS TEMP WHERE TEMP.ID = 1;
This query will update the first row in the table with ID equal to 1 and this is one of my favorite ways of doing it. It’s a little bit more complicated because you have to create a temporary table, but it makes things easier later on because you can use that temporary table for other queries as well if you need to.
UPDATE tbl_name SET column = value WHERE condition
If you want to update multiple rows in a single query, you can use the UPDATE statement. The following example updates the Salary column of all employees whose SalesYTD is greater than 1000:
UPDATE Employees SET Salary = 1200 WHERE SalesYTD > 1000;
This query will update the first name of all the employees to John.
UPDATE Employee SET FirstName = ‘John’ ;
Similarly, you can use the following query to update the last name of all employees to Smith:
UPDATE Employee SET LastName = ‘Smith’ ;