For example, the following query uses the NVL function to replace NULL values in the "name" column with the value "Unknown": SELECT NVL(name, 'Unknown') FROM table_name; The NVL function can be used with any data type. However, it is most commonly used with string and numeric data ty...
For example, if we have the following table, Table Sales_Data Store_Name Sales Store A 300 Store B NULL Store C 150 The following SQL, SELECT SUM(NVL(Sales,100)) FROM Sales_Data;would generate result below: SUM(NVL(Sales,100)) 550This...
I prefer COALESCE instead of NVL).If you're using SQL, since the value can beNULL, it would...
Example of DECODE and NVL functions Based on the Oracle SQL query shown in the diagram, here is the extracted SQL code and the result set: SQL Query: SELECT STATE, DECODE(STATE, 'HI', 'Remote US state', 'AK', 'Continental US state', 'Contiguous US state') LOCATION FROM CUSTOMER; ...
For example: SELECT NVL(supplier_city, 'n/a') FROM suppliers; The SQL statement above would return 'n/a' if the supplier_city field contained a null value. Otherwise, it would return the supplier_city value. Another example using the NVL function in Oracle/PLSQL is: ...
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:...
Now we will run the query in SQL developer and look the result. As we can see in the above screen shot that the null value in age column has been replaced with number zero. Example #2 Replace a null value with a string. In this scenario we are going to replace a null value of a...
I am creating a calculation in Discoverer 10g and only need to grab information between two points (".") An example of the string looks like this: I only need to grab the "Y" betwe...HTML5 video not playing on Samsung S8, Samsung browser The video works fine on all desktop, and...
Example #1: select NVL(supplier_city, 'n/a') from suppliers; The SQL statement above would return 'n/a' if the supplier_city field contained a null value. Otherwise, it would return the supplier_city value. Example #2: select supplier_id, ...
Appendix C inOracle Database Globalization Support Guidefor the collation derivation rules, which define the collation assigned to the return value ofNVLwhen it is a character value Examples The following example returns a list of employee names and commissions, substituting "Not Applicable" if the ...