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Pandas - How to flatten a hierarchical index in columns
I have a data frame with a hierarchical index in axis 1 (columns) (from a groupby.agg operation):
17 Answers
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Export database schema into SQL file
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Generate scripts does not include keys, indexes, constraints
– seeker
Aug 20 '12 at 11:14
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How to find largest objects in a SQL Server database?
...ize of indices and tables:
SELECT
t.name AS TableName,
i.name as indexName,
sum(p.rows) as RowCounts,
sum(a.total_pages) as TotalPages,
sum(a.used_pages) as UsedPages,
sum(a.data_pages) as DataPages,
(sum(a.total_pages) * 8) / 1024 as TotalSpaceMB,
(sum(a.used_pa...
difference between each.with_index and each_with_index in Ruby?
I'm really confused about the difference between each.with_index and each_with_index . They have different types but seem to be identical in practice.
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Index all *except* one item in python
Is there a simple way to index all elements of a list (or array, or whatever) except for a particular index? E.g.,
9 An...
How do I programmatically determine if there are uncommitted changes?
...ctions if there are uncommitted changes (either in the working tree or the index). What's the cleanest and most efficient way to do that? A command that exits with a return value of zero in one case and non-zero in the other would suit my purposes.
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Numpy first occurrence of value greater than existing value
I have a 1D array in numpy and I want to find the position of the index where a value exceeds the value in numpy array.
7 A...
Is there a way to access an iteration-counter in Java's for-each loop?
...t be a collection at all, and may in fact be something not at all based on indexes (such as a linked list).
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Insert a string at a specific index
How can I insert a string at a specific index of another string?
18 Answers
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Clustered vs Non-Clustered
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The distinction between a clustered vs. non-clustered index is that the clustered index determines the physical order of the rows in the database. In other words, applying the clustered index to PersonId means that the rows will be physically sorted by PersonId in the table, all...