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Unioning two tables with different number of columns
...atching column ordering that is implied by the use of * as column list specifier. This type of errors can be easily avoided by entering the column list explicitly:
select col_a, col_b, col_c from test1_1790
union all
select col_a, col_b, col_c from test2_1790;
A more frequent scenario for this erro...
How to sort in-place using the merge sort algorithm?
I know the question is not too specific.
10 Answers
10
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Different bash prompt for different vi editing mode?
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Just adding on from eMPee584 - if you are running bash 4.3 or higher, add the following to your ~/.inputrc file set show-mode-in-prompt This adds a + to the very left of your prompt if you are in edit mode, and a : if you are in command mode.
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How to make pipes work with Runtime.exec()?
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@Kaj What if you wanted to add options to ls i.e. ls -lrt ?
– kaustav datta
May 6 '13 at 6:25
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Changing one character in a string
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Don't modify strings.
Work with them as lists; turn them into strings only when needed.
>>> s = list("Hello zorld")
>>> s
['H', 'e', 'l', 'l', 'o', ' ', 'z', 'o', 'r', 'l', 'd']
>>> s[6] = 'W'
>>>...
Removing Data From ElasticSearch
...ut the document ID like so -
curl -XDELETE localhost:9200/shop/product
If you wish to delete an index -
curl -XDELETE localhost:9200/shop
If you wish to delete more than one index that follows a certain naming convention (note the *, a wildcard), -
curl -XDELETE localhost:9200/.mar*
Visua...
GCC -g vs -g3 GDB Flag: What is the Difference?
...DB but probably
makes other debuggers crash or refuse to read the program. If you want
to control for certain whether to generate the extra information, use
-gstabs+, -gstabs, -gxcoff+, -gxcoff, or -gvms (see below).
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-ggdb
Produce debugging information for use by GDB. This means to use the mo...
What is the difference between and ?
What is the difference between <html lang="en"> and <html lang="en-US"> ? What other values can follow the dash?
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How do I combine two data frames?
...g to concatenate two columns of the same name o_O
– lifelonglearner
Apr 1 at 2:13
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How to use CURL via a proxy?
... CURLOPT_HTTPPROXYTUNNEL and CURLOPT_CUSTOMREQUEST as it was the default.
If you don't want the headers returned, comment out CURLOPT_HEADER.
To disable the proxy simply set it to null.
curl_setopt($ch, CURLOPT_PROXY, null);
Any questions feel free to ask, I work with cURL every day.
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