The NVL function in SQL stands for "NVL," which means "Null Value Library." It is a function that allows you to replace NULL values with a default value. This can be useful in situations where you want to avoid errors or to ensure that your data is consistent. The syntax of the NVL...
Question: Is it possible to use the NVL function with more than one column with the same function call? To be clear, if i need to apply this NVL function to more than one column like this: NVL(column1;column2 ... , here is the default value for all ) Answer: You will need to ...
This Oracle tutorial explains how to use the Oracle/PLSQLNVL functionwith syntax and examples. Description The Oracle/PLSQL NVL function lets you substitute a value when a null value is encountered. Syntax The syntax for the NVL function in Oracle/PLSQL is: NVL( string1, replace_with ) Par...
Here are some examples of the Oracle NVL2 function to help explain how to use the NVL2 function in Oracle SQL. I find that examples are the best way for me to learn about code, even with the explanation above. Example 1 This example shows the basic usage of the NVL2 function. SELECTfir...
The DECODE function in Oracle is a versatile and powerful tool that allows users to perform conditional transformations on data within an SQL query. It is similar to the CASE statement, but it offers a more compact syntax, making it a popular choice for simplifying complex queries and improving...
```sql SELECT salary, NVL(commission_pct, 0), (salary12) + (salary12*NVL(commission_pct, 0)) annual_salary FROM employees; ``` 输出: NVL2(expr1, expr2, expr3) : The NVL2 function examines the first expression. If the first expression is not null, then the NVL2 function returns ...
In Oracle, NVL(exp1, exp2) function accepts 2 expressions (parameters), and returns the first expression if it is not NULL, otherwise NVL returns the second expression. In SQL Server, you can use ISNULL(exp1, exp2) function. Oracle Example: -- Ret
The SQL ServerISNULL()function lets you return an alternative value when an expression is NULL: SELECTProductName, UnitPrice * (UnitsInStock + ISNULL(UnitsOnOrder,0)) FROMProducts; or we can use theCOALESCE()function, like this: SELECTProductName, UnitPrice * (UnitsInStock +COALESCE(UnitsO...
Ifnull function (Databricks SQL), Learn the syntax of the ifnull function of the SQL language in Databricks SQL. Records with NULL field are not returned when ISNULL is used in the where clause Question: Table: ID AppType AppSubType Factor ...
Let us run the query in SQL developer and check the result. As we can see in the output the null value has been replaced by ‘Bhopal’ and the query returns the distinct cities in city column. Conclusion In this article we have seen about the definition of NVL function and its syntax....