现在我想转换成case语句。 select sum(case when person_status_id in (3,4,6) then (select 1 as x, count(*) as cnt from PERSON w and w.UPDATED_ON> (sysdate-30) )v end) as Completed, sum(case when person_status_id in (5,7,13) then (select 1 as x, count(*) as cnt from P...
There may be multiplelistener.orafiles on your computer, one for each Oracle home. To ensure that you use the correctlistener.orafile, check the Oracle home name in the listener service. See"Managing Oracle Database Services"for information on verifying service names. ...
is normally not very useful. In fact, such a result table can be terribly misleading. If you execute the below query for the EMPLOYEES and DEPARTMENTS tables, the result table implies that every employee has a relationship with every department, and we know that this is simply not the case...
oracle.oci.oci_access_governance_cp_governance_instance_facts – Fetches details about one or multiple GovernanceInstance resources in Oracle Cloud Infrastructure oracle.oci.oci_adm_application_dependency_vulnerability_facts – Fetches details about one or multiple ApplicationDependencyVul...
PL/SQL programs benefit from its use. There is nothing special about it other than being the name of a storage area. All of the aboveAnswer: D) All of the aboveExplanation:In the case of PL/SQL Variables –Variables serve as a means for programmers to temporarily store data during code...
Connect and CDC. This blog post will review the advantages and disadvantages inherent to moving data from a database using JDBC and CDC, and then move on to explore the real use case of how a legacy bank used Kafka Connect to bridge the silos and keep multiple applications/databases in ...
Quick Tip: Oracle SQL Developer calls what most folks think of as a ‘Physical Model’ the ‘Relational Model.’ Same difference, mostly. In SQL Developer, a Physical model allows you to define partitioning schemes, advanced storage parameters, and add your PL/SQL code. You ...
Answer: A. Using NATURAL JOINS in this case can yield unexpected results as there is an implicit searching of columns with identical names which in this case is not present.18.What of the following can be used to fetch non-matching rows along with the matching rows between a source and a...
The[mysqld]or[mysqld_safe]groups can be used for common options read by all instances ofmysqldormysqld_safe. You can specify a--defaults-file=file_nameoption to use a different configuration file for that instance, in which case the[mysqld]or[mysqld_safe]groups from that file are used...
Using Multiple Columns in a Group : Group By « Query Select « Oracle PL/SQL Tutorial The GROUP BY clause is used for grouping sets of records. WHERE clause constraints are evaluated on the data before it is grouped. HAVING clause constraints are evaluated on the results of the data ...