ORA-00934: group function is not allowed here

I got ” ORA-00934: group function is not allowed here ”  error in Oracle database.

 

ORA-00934: group function is not allowed here

 

Details of error are as follows.

SELECT name, surname count(*) FROM employee WHERE Count(*) > 1 GROUP BY surname;

ORA – 00934: GROUP FUNCTION IS NOT ALLOWED HERE

00964, 00000 – “group function is not allowed here”


 

 

GROUP FUNCTION IS NOT ALLOWED HERE

This ORA-00934 error is related to the group function which is not allowed.

You need to use HAVING CLAUSE For filtering if you use Aggregate function ( AVG, COUNT, MAX, MIN, SUM, STDDEV, or VARIANCE, ) in where clause.

 

To solve this error, use HAVING clause instead of where like following.

 

SELECT name, surname count(*) FROM employee GROUP BY surname HAVING Count(*) > 1;

 

 

 

 

Do you want to learn Oracle Database for Beginners, then read the following articles.

Oracle Tutorial | Oracle Database Tutorials for Beginners ( Junior Oracle DBA )

 

About Mehmet Salih Deveci

I am Founder of SysDBASoft IT and IT Tutorial and Certified Expert about Oracle & SQL Server database, Goldengate, Exadata Machine, Oracle Database Appliance administrator with 10+years experience.I have OCA, OCP, OCE RAC Expert Certificates I have worked 100+ Banking, Insurance, Finance, Telco and etc. clients as a Consultant, Insource or Outsource.I have done 200+ Operations in this clients such as Exadata Installation & PoC & Migration & Upgrade, Oracle & SQL Server Database Upgrade, Oracle RAC Installation, SQL Server AlwaysOn Installation, Database Migration, Disaster Recovery, Backup Restore, Performance Tuning, Periodic Healthchecks.I have done 2000+ Table replication with Goldengate or SQL Server Replication tool for DWH Databases in many clients.If you need Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS Consultancy and Training you can send my email adress [email protected].-                                                                                                                                                                                                                                                 -Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS ve linux Danışmanlık ve Eğitim için  [email protected] a mail atabilirsiniz.

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