An automatic identification and optimization method based on massive data-like SQL retrieval scenarios
An optimization method and mass data technology, applied in the direction of structured data retrieval, digital data information retrieval, database indexing, etc., can solve problems such as not being able to meet the retrieval performance requirements of retrieval scenarios, reduce retrieval resource consumption, improve retrieval performance, reduce The effect of resource consumption
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[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples.
[0031] Before automatically identifying and optimizing according to the retrieval scenario, the following process is required:
[0032] 1) SQL-like statement lexical syntax analysis;
[0033] 2) Retrieval semantic analysis;
[0034] 3) Logic plan tree generation.
[0035] The specific process is not related to the present invention, so it will not be described in detail here. However, in the stage of logical plan tree generation, operations such as scan / join / group by / order by / aggregation functions have been hierarchically divided. The present invention optimizes the single-table data scanning stage (scan), data indexing and storage medium selection . The present invention illustrates the optimization strat...
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