create index ids_stockprices on stock_prices(ticker, as_of_date); create index ids_stockpricestage on stock_prices_stage(ticker, as_of_date); 二、使用 airflow Connection 管理数据库连接信息 在上一节代码的基础上,将保存到文件的数据转存到数据库中,V2版本的代码如下: download_stock_price_v2.py...
昨日收盘价 last_close_price decimal(8,2) tra_stock_day_info_sz 当日开盘价 cur_open_price decimal(8,2) tra_stock_day_info_sz 当日收盘价 cur_high_price decimal(8,2) tra_stock_day_info_sz 当日最高价 cur_low_price decimal(8,2) tra_stock_day_info_sz 当日最低价 cur_close_price dec...
A full refresh is resource-intensive, though not as complex as incremental updates — to load data selectively, you’ll need to dot your i’s and cross your t’s. Incremental updates are behind eCommerce platforms updating inventory after each sale and stock market applications uploading the la...
01/12Barron'sBoeing Stock Would Benefit from a Breakup, Specialist Says Home Investing Quotes Stocks Canada ETL Profile Stock Screener Earnings Calendar Sectors Search Ticker | ETLCanada: TSX Venture E3 Lithium Ltd. +Watchlist You must be logged in to create alerts ...
Similar thing can happen to customer list/details, stock list/ details etc. What is the relationship of such repositories with data warehouse? Are they part of data warehouse? How can they be integrated into the data warehouse? And many more questions. Â I will add more on this article...
Time Series Analysis: Data mining cananalyze time-dependent datato identify trends, patterns, and seasonality. It is used in financial forecasting, stock market analysis, energy demand prediction, and weather forecasting. 3. Explain the concept of data denormalization in ETL. ...
History 62 Commits config dataReceiver data_origin origin props reader storage sync test .editorconfig .gitignore README.md VERSION.txt __init__.py check.py data.py datasync_install.bat lock.py log.py proxy.py requirements.txt setup.py ...
,`unlockedNumber`int(10)unsignedNOTNULLCOMMENT'曾经解锁的库存数量',`productAmount`decimal(10,2)NOTNULLCOMMENT'此字段专为同步外部订单而加,商品总金额=price*number+shippingFee-优惠金额,但优惠金额没在本系统存储',`balanceAmount`decimal(10,2)unsignedNOTNULLCOMMENT'余额扣减',`couponAmount`decimal(10,2)...
🚗ETL & UL listed:ETL is the most dynamic safety certification mark in North America. Its history can be traced back to the electrical testing laboratory founded by Thomas Edison in 1896. It has wide visibility and recognition...
对相关的数据库进行相触 A R TABLE qdtjdmp DISABLE TRIGGER qdtjdmp_insert A R TABLE qdtjdmh DISABLE TRIGGER qdtjdmh_insert 快速 一张表的数据, 一个数据库中有多少表 SELECT count (1) from sysobjects where xtype = u sp_spaceused Fact_MonthlyStock 【函数的讲解】 赋值方式的学习中 --变量的...