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

0 vote203 views2 answers
Show slave status mysql
SQL
3 votes213 views1 answer
Force using index plsql
SQL
4 votes199 views6 answers
Sql select statement
SQL
0 vote208 views1 answer
Print orcale
SQL
0 vote215 views1 answer
Get substract count sql
SQL
0 vote221 views3 answers
How to assign custom id in mysql
SQL
4 votes196 views1 answer
Select nls_date_format
SQL
0 vote204 views1 answer
Python connect microsoft sql server
SQL
8 votes223 views1 answer
Alter tablespace add datafile autoextend
SQL
1 vote221 views2 answers
Mysql trim spaces
SQL