How to find average in sql

Sql count

/*COUNT(column_name) will return the number of rows from the column 
that are not NULL*/
SELECT COUNT(column_name)
FROM table_name;

/*COUNT(*) will return the number of rows from the table*/
SELECT COUNT(*)
FROM table_name;

How to find average in sql

SELECT FIRST_NAME FROM EMPLOYEES
WHERE SALARY = (SELECT AVG(SALARY) FROM EMPLOYEES);

Find below average salary in sql

SELECT first_name, salary FROM employees
WHERE salary <= (SELECT AVG(salary) FROM employees);

Above average salary in sql

SELECT FIRST_NAME FROM EMPLOYEES
WHERE SALARY > (SELECT AVG(SALARY) FROM EMPLOYEES);

Similar codes

2 votes309 views1 answer
Delete all value query
SQL
8 votes333 views2 answers
Oracle auto increment primary key
SQL
0 vote360 views1 answer
SQL server datetime compare
SQL
0 vote343 views1 answer
Mysql select random rows large table
SQL
2 votes333 views1 answer
Sql get the name of user pc
SQL
6 votes325 views4 answers
How to remove unique key in mysql
SQL
0 vote335 views1 answer
Sql on-premises
SQL
0 vote354 views1 answer
Influxdb list all tags for a measurement
SQL
0 vote330 views1 answer
How to change null display in psql
SQL
0 vote315 views1 answer
Oracle job schedules
SQL