SQL> EXPLAIN PLAN SET STATEMENT_ID = 'test' FOR select * from emp where deptno = 10; Explained. At this stage, the PLAN_TABLE is populated with the required data. However, in order to understand it, we need to
Drop constraint in Oracle: We can drop the constraint in Oracle using the alter table command. we can drop primary, foreign key, check, not null and unique constraint with the same command Coalesce Function in Oracle: The Coalesce function in Oracle will return the first expression if it is ...
When working with Oracle databases, there are times when you need to optimize and homogenize the database to ensure good performance. This is also known as database tuning. In most cases when tuning a database, you’ll focus on SQL query tuning. In Oracle, SQL query tuning is an importan...
The less time any returned items spend in limbo, the more efficient and cost-effective reverse logistics will be. That means setting up the process so that the return is in constant motion toward its next stop. Products in need of repair should be sent straight to that department, for examp...
"It's a hard topic," she said. "But I think it's incumbent on us to narrate that story for the business and be able to explain the benefits of having our data in order." Johnson also cited the need for good data to support AI projects and the difficulty of getting organizations to...
In general, only application designers using the programming interfaces to Oracle are concerned with which types of actions should be grouped together as one transaction. Transactions must be defined properly so that work is accomplished in logical units and data is kept consistent. A transaction ...
Oracle has procedures in place to analyze the information you have provided and transfer to SR to the right support team. Nevertheless, it helps if you can minimize the number of times that Support transfers your SR. The Service field determines which support team performs the initial analysis....
One example is the EXPLAIN PLAN statement in Oracle, but the name of the instruction varies according to the RDBMS that you’re working with. Elsewhere, you might find EXPLAIN (MySQL, PostgreSQL) or EXPLAIN QUERY PLAN (SQLite). Note that if you’re working with PostgreSQL, you make the ...
performance; and HR is more likely to get support and funding if executives understand how achieving their upskilling goals will benefit the company. If business leaders and HR explain why an upskilling program will help them get the right results in a unified approach, that will be even more ...
An easy way to check this out id to use “explain plan for” clause, which tells you how actually oracle interprets your query after optimization. explain plan for select e.name, d.name from employee e, department d where e.dept_id=d.id and e.salary>50000; ...