1.What is the dual table, what is its purpose. dual is just a convienence table. You don't need to use it, you can use anything you want. The advantage to dual is the optimizer understands dual is a special one row, one column table -- when you use it in queries, it uses thi...
things basedonthat.8) dual = magic. dualisa one row table however having morethen1orlessthenoneisdangerous. You are updating the data dictionary. You should naturally expect very bad thingstohappen. 简单总结,意思如下: DUAL is a convienence table The column, its name, its datatype and even...
“Oracle's AI agents automate drug design, image and genomic analysis for cancer diagnostics, audio updates to electronic health records for patient care, satellite image analysis to predict and improve agricultural output, fraud and money laundering detection, dual factor biometric computer logins, and...
“Oracle's AI agents automate drug design, image and genomic analysis for cancer diagnostics, audio updates to electronic health records for patient care, satellite image analysis to predict and improve agricultural output, fraud and money laundering detection, dual factor biometric computer logins, and...
Re: why does "select 1 from dual" work - what is the "1"? Hi,this is all explained in the documentation :"DUAL is a table automatically created by Oracle Database along with the data dictionary. DUAL is in the schema of the user SYS but is accessible...
SELECT DBMS_SQLTUNE.report_tuning_task('5dkrnbx1z8gcb_tuning_task_1') AS recommendations FROM dual; SET PAGESIZE 24 2. Go through the profile recommendation part of the report: DBMS_SQLTUNE.report_tuning_taskwill generate the completed output of the advisory. If you go through the profile...
What is Oracle doing to support Arm server-side development? Arm,Ampere, and leading ISVs such as GitLab and Jenkins are partnering with Oracle to make Arm server-side development easy and cost effective. Oracle Cloud Infrastructure (OCI), in collaboration with partners, provides an easy path ...
FROM dual; BEGIN IF ref_in IS NULL THEN ref_out := 'X'; RETURN; END IF; FOR I IN 1..LENGTH(l_search_string) LOOP OPEN cur_get_next_alpha(I); FETCH cur_get_next_alpha INTO l_alpha_char; CLOSE cur_get_next_alpha; FOR J IN 1..LENGTH(ref_in) LOOP ...
The most common strong authentication policy is dual-factor authentication. When logging in to the system, a user needs to provide not only the user name and password, but also the items bound to the user name and password (for example, USB keys are widely used in online banking), or ...
(a) Primary Row Store+In-Memory Column Store. 此类HTAP 数据库利用主行存储作为 OLTP 工作负载的基础,并使用内存中的列存储处理 OLAP 工作负载。主行存会保存所有数据,行存针对内存进行了优化,以便有效地处理数据更新。更新数据会Append到delta store中,delta store会合并到列存中。Oracle in-memory dual-forma...