2018-05-09
696 reads
Python
2018-04-25
750 reads
2018-04-11
724 reads
2018-03-28
781 reads
SQL Server Machine Learning Services – Part 6: Merging Data Frames in Python
In the final article in this series, Robert Sheldon demonstrates combining data sources with multiple formats into one Python data frame.
2018-03-15
3,337 reads
2018-03-14
721 reads
2018-02-28
705 reads
SQL Server Machine Learning Services – Part 4: Finding Data Anomalies with Python
Python is widely used to analyze data. One such use is to find anomalies or outliers. In this article, Robert Sheldon demonstrates how to create a support vector machine (SVM) to score test data so that outliers can be viewed on a scatter plot.
2018-02-14
3,434 reads
Historical Stock Prices and Volumes from Python to a CSV File
Python is a versatile language that is gaining more popularity as it is used for data analysis and data science. In this article, Rick Dobson demonstrates how to download stock market data and store it into CSV files for later import into a database system.
2018-01-31
2,873 reads
SQL Server Machine Learning Services – Part 3: Plotting Data with Python
One of the advantages of running Python from SQL Server is the ability to create graphics to assist in analysis of data. Robert Sheldon demonstrates matplotlib, a 2D plotting library, widely used with Python to create quality charts.
2018-01-29
3,463 reads
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Question of the Day
Adding new column with DEFAULT II
Which number did the two COUNT(*) return:
DROP TABLE IF EXISTS #tmp CREATE TABLE #tmp (id INT NOT NULL) INSERT INTO #tmp (id) SELECT gs.value FROM GENERATE_SERIES(1, 5) AS gs ALTER TABLE #tmp ADD my_value INT NOT NULL CONSTRAINT df_tmp_my_value DEFAULT 1 SELECT COUNT(*) FROM #tmp AS t WHERE my_value = 1 ALTER TABLE #tmp DROP CONSTRAINT df_tmp_my_value ALTER TABLE #tmp ADD CONSTRAINT df_tmp_my_value DEFAULT 2 FOR my_value SELECT COUNT(*) FROM #tmp AS t WHERE my_value = 1See possible answers