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
NVL(expr1, expr2) : In SQL, NVL() converts a null value to an actual value. Data types that can be used are date, character and number. Data type must match with each other i.e. expr1 and expr2 must of same data type. Syntax – ```sql NVL (expr1, expr2) ``` 表达式 1...
SQL ISNULL Function Syntax and Parameters The ISNULL function syntax is different in MySQL and SQL Server MySQL In MySQL, it has one parameter: ISNULL (input_value) The parameters of the ISNULL function are: input_value(mandatory): This is the value to check to see if it is NULL or n...
In dit artikel Syntaxis Argumenten Retouren Voorbeelden Gerelateerde functies Van toepassing op: Databricks SQL Databricks Runtime Retourneertexpr2alsexpr1NULLis, ofexpr1anders. Deze functie is een synoniem voorcoalesce(expr1, expr2)met twee argumenten. ...
The syntax for the NVL function in Oracle/PLSQL is: NVL( string1, replace_with ) Parameters or Arguments string1 The string to test for a null value. replace_with The value returned ifstring1is null. Returns The NVL function returns a substitute value. ...
You are here: SQL Reference Manual > SQL Functions > NULL-handling Functions > NVLNVL Returns the value of the first non-null expression in the list. Behavior Type Immutable Syntax NVL ( expression1 , expression2 ); Parameters If expression1 is null, then NVL returns expression2. If ...
The OracleNVL()function allows you to replace null with a more meaningful alternative in the results of a query. The following shows the syntax of theNVL()function: NVL(e1, e2)Code language:SQL (Structured Query Language)(sql) TheNVL()function accepts two arguments. Ife1evaluates to null,...
Oracle Function: NVL Description The Oracle/PLSQLNVL functionlets yousubstitutea value when a null value is encountered. NVL函数是当出现空值时替换一个值 Syntax NVL( string1, replace_with ) Example For example: Frequently Asked Questions 使用DISTINCT的方法COUNT函数和NVL函数的区别:...
Oracle/PLSQL: NVL Function In Oracle/PLSQL, theNVLfunction lets you substitute a value when a null value is encountered. The syntax for theNVLfunction is: NVL( string1, replace_with ) string1is the string to test for a null value....
SQL Server 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: ...