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I have a table with 10bn rows and my search query pulls 1.5mn rows which are indexed. My question is if I delete the unnecessary rows and reduce to 3 Mn rows, i guess my search criteria performance …
The below code excerpt produces the following error at the last line IndexError: list assignment index out of range I’m expecting that w is an array with 3 values in it, w[0], w[1], w[2]. Do you see …
to be more specific, I’ve created a news module with a tag system. As each tag is unique (you are not allowed, as an admin, to create 2 identical tags), is the id column still useful? I guess no, but …
I am attempting to access the last element (datetime) in my Pandas series. Below I am showing the type for clarification. I am new to Python so I apologize. type(East.times) pandas.core.series.Series …
In MySQL InnoDB or lots of other database engines, the primary key is implemented with clustered index. However after searching with secondary index, the engine must look up into clustered index with …
I have a dataframe which has the 10 unique countries within 100 rows. Now by applying value_counts(), I am trying to get the frequency of occurance of each country. I need this to be in a dataframe. …
I seem to be having an issue pythons .format() tool. I currently have this code: varno=6 input=product([True,False],repeat = (varno)) string= ({1} or not {2} or not {5} )and (not {1} or {6} )and (not {…
I’m trying to add values to a pandas data frame based on the combinations of a user’s and an agent’s choices. Here’s what i tried so far. import random import numpy as np import pandas as pd from …
Index of items not found in listA as compared to listB listA = [[a,b,a,b,c],[c,f,q,a],[a,b,c,d,a,a]] listB = [[a,b],[c,f],[a]] test = [i for i, enumerate(listB) for items not in (listA)] …
I am using Lucene 8.2.0 in Java 11. I am trying to index a Long value so that I can filter by it using a range query, for example like so: +my_range_field:[1 TO 200]. However, any variant of that, …