REQUEST COMPLIMENTARY SQLS*PLUS LICENCE
Oracle/PLSQL COVAR_POP function
Oracle/PLSQL COVAR_POP function returns covariance of a set of pairs of numbers.
Oracle/PLSQL syntax of COVAR_POP function
COVAR_POP(expression1_id expression2_id )
where:
- expression1_id, expression2_id – numeric expressions
Note:
The function COVAR_POP removes all pairs where expression1_id or expression2_id has zero value.
Function COVAR_POP returns a numeric value.
Application:
You can use COVAR_POP function in the following versions of Oracle/PLSQL:
Oracle 12c, Oracle 11g, Oracle 10g, Oracle 9i, Oracle 8i |
Let’s consider an example of function COVAR_POP to understand how to use function COVAR_POP in Oracle/PLSQL.
SELECT job1_id,
COVAR_POP(SYSDATE-hire_date_id, salary_id) AS covar_pop_id,
COVAR_SAMP(SYSDATE-hire_date_id, salary_id) AS covar_samp_id
FROM empls
WHERE depart_id in (50, 80)
GROUP BY job1_id
ORDER BY job1_id, covar_pop_id, covar_samp_id;
--result:
JOB1_ID COVAR_POP_id COVAR_SAMP_id
---------- ----------- -----------
SA_MAN1 660700 825875
SA_REP1 579988.466 600702.34
SH_CLERK1 212432.5 223613.158
ST_CLERK1 176577.25 185870.789
ST_MAN1 436092 545115
PL/SQL tutorial: Oracle COVAR_POP 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...