How do I take an efficient simple random sample in SQL? The database in question is running MySQL; my table is at least 200,000 rows, and I want a simple random sample of about 10,000. The "ob...

Mar 16, 2009 · If you can use a pseudo-random sampling and you're on SQL Server 2005/2008, then take a look at TABLESAMPLE. For instance, an example from SQL Server 2008 / AdventureWorks …

I just discovered that the RAND() function, while undocumented, works in BigQuery. I was able to generate a (seemingly) random sample of 10 words from the Shakespeare dataset using: SELECT …

23 You need to use Inverse transform sampling method to get random values distributed according to a law you want. Using this method you can just apply inverted function to random numbers having …

Mar 30, 2014 · I want to know the use of random.sample() method and what does it give? When should it be used and some example usage.

Aug 13, 2012 · What is a clean way of taking a random sample, without replacement from an array in javascript? So suppose there is an array x = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15] and I want to …

I am struggling to find the appropriate function that would return a specified number of rows picked up randomly without replacement from a data frame in R language? Can anyone help me out?

Dec 23, 2019 · 13 torch.multinomial provides equivalent behaviour to numpy's random.choice (including sampling with/without replacement):

I need to perform random stratified sampling of the data set to achieve a sample size of 100 line items. My sample would need to reflect the statistics of the population.

Mar 26, 2012 · I need to select rows randomly from an Oracle DB. Ex: Assume a table with 100 rows, how I can randomly return 20 of those records from the entire 100 rows.