Query method and query device for column storage files
A query method and column storage technology, which are applied to the query method of column storage files, query devices, computer equipment and readable storage media, can solve the problems of directly querying column storage formats that do not support SPL statements, and achieve convenient query , the effect of expanding the scope of the query
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Embodiment 1
[0044] Refer to figure 1 , Shows a flow chart of the steps of the method for querying stored files in the first embodiment of the present invention. It can be understood that the flowchart in this method embodiment is not used to limit the order of execution of the steps. It should be noted that, in this embodiment, the query device 2 for column storage files (hereinafter referred to as the query device 2) is used as the execution subject for exemplary description. details as follows:
[0045] Step S100: Obtain the SPL query sentence input by the user from the terminal.
[0046] Specifically, when the user needs to query the column storage file, the query device 2 obtains the SPL query sentence input by the user from the terminal. Wherein, the query sentence at least includes: query time range and name.
[0047] Step S102: Determine the query range in the first file of HDFS according to the SPL query sentence, where the first file is a column storage file, and the first file is cl...
Embodiment 2
[0062] See figure 2 , Shows a schematic diagram of the hardware architecture of the query device in the second embodiment of the present invention. The query device 2 includes, but is not limited to, a memory 21, a processing 22, and a network interface 23 that can communicate with each other through a system bus. figure 2 Only the query device 2 with the components 21-23 is shown, but it should be understood that it is not required to implement all the illustrated components, and more or fewer components may be implemented instead.
[0063] The memory 21 includes at least one type of readable storage medium, the readable storage medium includes flash memory, hard disk, multimedia card, card type memory (for example, SD or DX memory, etc.), random access memory (RAM), static memory Random access memory (SRAM), read only memory (ROM), electrically erasable programmable read only memory (EEPROM), programmable read only memory (PROM), magnetic memory, magnetic disks, optical disks,...
Embodiment 3
[0067] See image 3 , Shows a schematic diagram of program modules of the column storage file query system of the third embodiment of the present invention. In this embodiment, the column storage file query system 24 may include or be divided into one or more program modules. The one or more program modules are stored in a storage medium and executed by one or more processors to The present invention is completed, and the above query method for column storage files can be realized. The program module referred to in the embodiment of the present invention refers to a series of computer program instruction segments capable of completing specific functions, and is more suitable for describing the execution process of the column storage file query system 24 in the storage medium than the program itself. The following description will specifically introduce the functions of each program module in this embodiment:
[0068] The obtaining module 201 is used to obtain the SPL query sente...
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