Hive SQL How does it work row_number() And so on where condition ?

The preface can be found in this blog , We must have a certain understanding of the basic use of window function , There is no more nonsense here ...
2021-01-29 01:02 views 83

2020 Tianchi big data - Sharing of smart ocean construction scheme competition

Preliminaries （2020 year 1 month 2 day —2020 year 2 month 21 day ）, The second round （2020 year 2 month 25 day —2020 year 3 month 22 day ）,baselin...
2021-01-28 21:06 views 53

Musk used the steering wheel on Tesla's new car ! Beggar version 80 Wanqi

Musk upgrades old models , Tesla immediately becomes a technology circle —— Even the hot topic in the space industry . see , Racing steering wheel...
2021-01-28 15:38 views 32

uni-app use websocket（ encapsulation , Heartbeat detection ）

preface ： Recently, I want to uni-app Used in applet websocket Dual communication , and uni-app In the plug-in Market websocket Also made a good p...
2021-01-28 09:50 views 69

27 Year old invention SQL in the future , God took him away

1974 year , Turing prize winner Charles · Bachman attends a database Conference , I met Edgar · Corder . Codd hasn't got a Turing Award yet , But i...
2021-01-27 08:51 views 39

How should Xiaobai learn java?

Section 1 chapter Java introduction 1.1　 History and future direction of computer language 1.1.1　 Computer has become the extension of human brain...
2021-01-26 18:53 views 18

2021 The most complete AI book list

The understanding of AI varies from person to person . Some people think that artificial intelligence is a synonym for any form of intelligence re...
2021-01-26 14:37 views 20

use JS Print the 99 multiplication table on the console

reflection ： After learning process control and condition judgment , We can use js Print all kinds of 99 multiplication tables, no matter what kin...
2021-01-26 09:25 views 16

Wi-Fi 6E Already launched It's different from ordinary Wi-Fi What's the difference

last year 9 month 2 day , Words ROG Released a high-end electronic competition router , Equipped with 2.5Gbps Of LAN Port and power amplifier , Th...
2021-01-25 09:45 views 39

“ Parallel universe ” It really exists ?! Astronomers found the first evidence

“ Parallel universe ”, It's always been a science fiction concept , And now it seems , It seems to really exist ! There's a theory to start with , ...
2021-01-25 08:45 views 18
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