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 OceanBase subquery

OceanBase subquery

In data, sub queries can be divided into dependent subqueries and non dependent subqueries. A dependent subquery is that the execution of the subquery depends on the 'variable' of the external query, so this seed query is usually counted many times. A subquery without dependency is that the execution of the sub query does not depend on the 'variable' of the external query.
 Oceanbase distributed polymerization under pressure

Oceanbase distributed polymerization under pressure

The aggregation operators in database, such as sum, AVG, group by, sort and so on, will consume a large amount of CPU and IO resources for computing and reading and writing. By parallel execution, the corresponding operators will be pressed down to each computing node, making full use of the computing resources of clusters and improving the execution efficiency. Generally speaking, the aggregate calculation is...
 General syntax summarization

General syntax summarization

Constant INT_VALUE: matches integer type constants, such as 123. DECIMAL_VALUE: matches fixed-point type constants, such as 123.456. STR_VALUE: matches string constants, such as ABC. NULL: matches the NULL constant. STORAGE_SIZE: matching storage.
 ISCC 2018 writeup

ISCC 2018 writeup

I. Misc 1. topic: What is that? Answer: (1) after opening the title, it is found that a gesture is shown in the following figure: (2) open the winHex tool and look for 00000272000001F4, as shown in the following figure; (3) change to 000002720000.
 Sierra Leone college, North California

Sierra Leone college, North California

Your browser does not support video tags in Sierra Leone college in North California. Aspen Institute is an international non profit think-tank and Research Institute, the top 150 Sierra Leone college in 2400 community colleges in the United States. This allows the academy to qualify for the Aspen's highest prize of 1 million in 2019.