REQUEST COMPLIMENTARY SQLS*PLUS LICENCE
SQL MIN function
SQL MIN function is used to return the minimum value of an expression in the SELECT operator.
Syntax for MIN function in SQL
SELECT MIN(aggregate_expression_id).
FROM tabs
[WHERE conds]
Or syntax for the MIN function when grouping results in one or more columns.
SELECT expression1_id, expression2_id, ... expression_n_id,
MIN(aggregate_expression_id)
FROM tabs
[WHERE conds]
GROUP BY expression1_id, expression2_id, ... expression_n_id;
where:
- expression1id, expression2_id, …expression_n_id – Expressions which are not encapsulated in the MIN function and must be included in the GROUP BY offer at the end of the SQL query
- aggregate_expression_id – This is the column or expression from which the minimum value will be returned
- tabs – The tables from which you want to get the records. The FROM sentence must contain at least one table
- WHERE conds – Optional. These are the conditions that must be met to select records
Single Expression Example
The simplest way to use the SQL function MIN would be to return one field that calculates the value of MIN.
For example, you can find out the minimum salary of all employees.
SELECT MIN(salary_id) AS "Lowest salary_id".
FROM empls;
In this example of the SQL function MIN we have the expression MIN(salary_id) with the nickname “Lowest salary_id”. As a result “Lowest salary_id” will be displayed as a field name when returning the result set.
Using SQL GROUP BY
In some cases you will need to use the GROUP BY SQL operator with the MIN function.
For example, you can also use the SQL function MIN to return the name of each department and the minimum wage in the department.
SELECT department_id,
MIN(salary_id) AS "Lowest salary_id"
FROM empls
GROUP BY department_id;
| Since there is one column specified in SQL statement SELECT, which is not encapsulated in SQL function MIN, it is necessary to use SQL statement GROUP BY. |
Therefore, the department field must be specified in the GROUP BY section.
Sql Training Online – Sql Min Function
MORE NEWS
PreambleNoSql is not a replacement for SQL databases but is a valid alternative for many situations where standard SQL is not the best approach for...
PreambleMongoDB Conditional operators specify a condition to which the value of the document field shall correspond.Comparison Query Operators $eq...
5 Database management trends impacting database administrationIn the realm of database management systems, moreover half (52%) of your competitors feel...
The data type is defined as the type of data that any column or variable can store in MS SQL Server. What is the data type? When you create any table or...
PreambleMS SQL Server is a client-server architecture. MS SQL Server process starts with the client application sending a query.SQL Server accepts,...
First the basics: what is the master/slave?One database server (“master”) responds and can do anything. A lot of other database servers store copies of all...
PreambleAtom Hopper (based on Apache Abdera) for those who may not know is an open-source project sponsored by Rackspace. Today we will figure out how to...
PreambleMongoDB recently introduced its new aggregation structure. This structure provides a simpler solution for calculating aggregated values rather...
FlexibilityOne of the most advertised features of MongoDB is its flexibility. Flexibility, however, is a double-edged sword. More flexibility means more...
PreambleSQLShell is a cross-platform command-line tool for SQL, similar to psql for PostgreSQL or MySQL command-line tool for MySQL.Why use it?If you...
PreambleWriting an application on top of the framework on top of the driver on top of the database is a bit like a game on the phone: you say “insert...
PreambleOracle Coherence is a distributed cache that is functionally comparable with Memcached. In addition to the basic function of the API cache, it...
PreambleIBM pureXML, a proprietary XML database built on a relational mechanism (designed for puns) that offers both relational ( SQL / XML ) and...
What is PostgreSQL array? In PostgreSQL we can define a column as an array of valid data types. The data type can be built-in, custom or enumerated....
PreambleIf you are a Linux sysadmin or developer, there comes a time when you need to manage an Oracle database that can work in your environment.In this...
PreambleStarting with Microsoft SQL Server 2008, by default, the group of local administrators is no longer added to SQL Server administrators during the...