The structured query language (SQL) uses the SQL WHERE Clause for data filtering based on the applied conditions. It is commonly used in theSelect, Update, or deletestatement. Let’s go ahead and explore the WH
This UPDATE Statement in SQL allows us to update multiple rows at once by applying the same value to all the matching records. Syntax: UPDATE table_name SET column_name = new_value WHERE columnname IN (value1...); Example: -- To update the status UPDATE Intellipaat SET status = 'Inact...
Now, let's look at an example of how to use the AND condition in anUPDATE statement. This will test for multiple conditions to be met before a record is updated. In this example, we have a table calledsupplierswith the following data: ...
动态 SQL 之<foreach> 循环执行sql的拼接操作，例如：SELECT * FROM USER WHERE id IN (1,2,5)。
where language='Spanish'and release_year>2000AND release_year<2010; 上面这句这么写可能比较麻烦了,回头改下 WHERE AND OR What if you want to select rows based on multiple conditions where some but not all of the conditions need to be met? For this, SQL has the OR operator. ...
Add a Where condition, for example:prettyprint 复制 Dim SQLCOMMANDSTRING As String = "UPDATE Contacts Set Field = @Value Where [FirstName] = @firstname" Dim SqlCommand As New SqlCommand(SQLCOMMANDSTRING, SqlConnection) Dim Count As Integer With SqlCommand.Parameters .AddWithValue("@firstname",...
The Oracle optimizer determines the most efficient execution plan and is the most important step in the processing of any SQL statement. The optimizer: • Evaluates expressions and conditions • Uses object and system statistics • Decides how to access the data ...
THEN conditions as required in the CASE statement. For example, -- multiple CASE conditions in SQL SELECT customer_id, first_name, CASE WHEN country = 'USA' THEN 'United States of America' WHEN country = 'UK' THEN 'United Kingdom' END AS country_name FROM Customers; Here, the result ...
SQL - The SQL SELECT Statement SQL - Restricting and Sorting Data SQL - Using Single-Row Functions SQL - Conversion Functions SQL - Conditional Expressions SQL - Using the Group Functions SQL - Get Data from Multiple Tables SQL - Subqueries to Solve Queries SQL - Using the Set Operators SQL...
Tables:It contains a table from where we want to get records. We can have multiple tables defined here as well with proper Join clause WHERE conditions:We can filter records using Where clause. It is an optional clause Let us explore the SQL SELECT INTO statement using examples. ...