Functions

A function is a reusable set of statements to perform a task or calculate a value.
Functions can be passed one or more values and can return a value at the end of their execution. 
In order to use a function, you must define it somewhere in the scope where you wish to call it.

Functions

SELECT COUNT(age) FROM Students;

Source: practice.geeksforgeeks.org

Similar codes

0 vote274 views1 answer
Mysql zerofill
SQL
1 vote259 views1 answer
Mysql month name extract
SQL
2 votes279 views1 answer
Sqlplus clear screen
SQL
0 vote275 views1 answer
Get clob size oracle
SQL
0 vote242 views1 answer
Sum sqlserver
SQL
1 vote249 views1 answer
Oracle aleter trigger ora-01031
SQL
0 vote249 views1 answer
No suitable driver found for sqlite
SQL
0 vote255 views1 answer
Sql query to find difference between total no. of rows and distinct rows in sql server
SQL
1 vote256 views2 answers
How to add amount between date in sql
SQL
9 votes235 views2 answers
Cmd to rename a collumn name in sql
SQL