In the data warehouse field, there is a concept called transaction fact table, which is generally translated as "transaction fact table" in Chinese ". Transaction fact tables are one of the three basic types of fact tables in the data warehouse for dimensional modeling. The other two types are periodic snapshot fact tables and cumulative snapshot fact tables.
Transaction fact tables use the same consistenc
Transferred from: http://www.aboutyun.com/forum.php?mod=viewthreadtid=8590highlight=hive
Questions Guide:1. How to view the hive table structure.2. How to view table structure information.3. How to view the partition information.4. Which command can blur the search table
1.hive Fuzzy Search Table
Show tables like ' *n
Tags: dev term int unlock page casing InnoDB case constraintOne, simple description:1), the limit of the transmission table space:1,mysql version 5.6.6 and above, and version recommendation source and target versions are recommended for GA version and large version2, the table engine is InnoDB and opens a stand-alone tablespace innodb_file_per_table3, the table i
In the design of the database, often do not take into account the problem of table partitioning, often in the burden of the data table load is getting heavier, will take into account the partitioning method, at this time, it is related to how to convert the ordinary table to the problem of the Component table.So, how do you convert a normal
Home, I think I'm looking for this should be a critical to rely on the PHP template Rendering page and spa a transition between the plan, I intend to take this step by step changes are tested;It is also a further reflection on the problem of
First write a title, slowly write ...Vue.js is a library that builds a data-driven Web interface. Technically, it focuses on the ViewModel layer of the MVVM pattern, so it's very easy to learn and easy to integrate with other libraries or existing
Directly post code:First look before you enter:style>#example{margin:100px Auto;width:600px;}. Show{margin:10px;}#searchText{Display:Block;margin:0 Auto 10px;Height:24px;Line-height:24px;width:200px;}. Content ul Li{text-align:Center;}. Content ul
ObjectiveLearning Vue for a while, recently used Vue to do a set of back-office management system, which uses the most recursive components, but also because of their unfamiliar official documents so that they tread a lot of pits, today write to
The original Jasnybootstrap cannot be previewed after uploading multiple images, so it draws on some other methods.Html class="Manage-file" id="Manage-file" ref="form"> type="hidden" name="Pubprojectid" :value="Project.id" > class="Form-group">
Vue Development EnvironmentFirst to download the necessary packagesCommand CNPM Install/yarn Install1 Starting the background service NPM run server2 starting the foreground service NPM run serverVue production EnvironmentFirst to download the
OverviewVue-resource is a plug-in for vue.js that can initiate requests and process responses through XMLHttpRequest or JSONP. $.ajax like jquery, but the API is more concise:The Vue-resource plugin has the following features:1. Small
Configuration Environment Tutorial There are too many online, do not repeat, we recommend the use of NPM command line installation, always feel that the idea does not use the command line to configure the environment is not a good programmer, or for
It is recommended to use the Official command line tool, which can be used to quickly build a large single page application. It takes only a minute to launch a build configuration item with hot reload, save-time static check, and a production
Http://baijiahao.baidu.com/s?id=1592208940535931839&wfr=spider&for=pc2017 is over and the Lunar New Year is coming.It is time to take stock of the 2017 JS excellent project, but also for the front-end to continue the rapid development of 2018 years
Some properties on the component are not defined in prop:.Because an explicitly defined prop is appropriate for passing in information to a subcomponent, the author of the component library does not always foresee what scenario the component will be
Full table Scan (Scans, FTS)Full-table scanning means that when Oracle accesses the data in the target table, it starts scanning from the first block (block) of the first area occupied by the table, scanning to the table's high watermark (Hwm,high water Mark), EXTENT Oracle imposes the filter criteria specified in the
1.hive Fuzzy Search Table
Show tables like ' *name* ';2. View table structure InformationDESC formatted table_name;DESC table_name;3. View partition informationShow partitions table_name;4. Querying data based on partitionsSelect Table_coulm from table_name where partition_name = ' 2017-02-25 ';5. View HDFs File informationDFS-LS/USER/HIVE/WAREHOUSE/TABLE02;6. Load data into
(I) origins of hot and Iot
The storage speed of heap organization tables is faster because sorting is not required. However, to find records that meet certain conditions, you must read all the records for filtering.
At this time, the index will appear to speed up the query. The index is used to sort and store the values of a few specific fields and record the position in the table,
Because the index is ordered, it is easy to query the specific record
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.