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SQLite add Primary Key
I created a table in Sqlite by using the CREATE TABLE AS syntax to create a table based on a SELECT statement. Now this table has no primary key but I would like to add one.
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Return empty cell from formula in Excel
...Blank, and you will be able to use the following pattern just like in your question:
=IF(A1 = "Hello world", GetTrueBlank, A1)
Step 1. Put this code in Module of VBA.
Function Delete_UDF(rng)
ThisWorkbook.Application.Volatile
rng.Value = ""
End Function
Step 2. In Sheet1 in A1 cell add...
deleting rows in numpy array
...0. ],
[ 1.7, 1.8]])
>>> nz = (p == 0).sum(1)
>>> q = p[nz == 0, :]
>>> q
array([[ 1.4, 1.5],
[ 1.7, 1.8]])
By the way, your line p.delete() doesn't work for me - ndarrays don't have a .delete attribute.
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Reading GHC Core
...eral Haskell community has released via SO is staggering. Keep up the good Q's and A's, everybody!
– Dan Burton
May 26 '11 at 22:37
4
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Simulate CREATE DATABASE IF NOT EXISTS for PostgreSQL?
I want to create a database which does not exist through JDBC. Unlike MySQL, PostgreSQL does not support create if not exists syntax. What is the best way to accomplish this?
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How to get a complete list of ticker symbols from Yahoo Finance? [closed]
... I don't think this works anymore. The wrapper API mentioned makes a request to biz.yahoo.com/i which appears to have changed (redirects to finance.yahoo.com/q) and no longer contains the table the XPath suggests.
– richardr
May 4 '14 at 0:14
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Batch file to delete files older than N days
... and found some examples with hundreds of lines of code, and others that required installing extra command line utilities to accomplish the task.
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Sharing a result queue among several processes
The documentation for the multiprocessing module shows how to pass a queue to a process started with multiprocessing.Process . But how can I share a queue with asynchronous worker processes started with apply_async ? I don't need dynamic joining or anything else, just a way for the workers to (r...
What is the difference between and ?
...f page uses hyphenation from CSS (hyphens: auto), then lang attribute is required to allow browser to select proper set of rules.
– RobertT
Oct 30 '14 at 2:42
1
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Can I run multiple programs in a Docker container?
...side single container. This is an example of a docker container running mysql, apache and wordpress within a single container.
Say, You have one database that is used by a single web application. Then it is probably easier to run both in a single container.
If You have a shared database that is us...