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How to extract year and month from date in PostgreSQL without using to_char() function?
I want to select sql:
SELECT "year-month" from table group by "year-month" AND order by date , where
year-month - format for date "1978-01","1923-12".
select to_char of couse work , but not "right" order:
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Is it safe to ignore the possibility of SHA collisions in practice?
...ssing on the so-called "birthday paradox". Have a better look at the "nice table", it does not work the way you think. For the figures I give, in that table, it would be a value "10^9" in a column labelled "4.3*10^-60" and row "128 bits" (but the table does not go below 10^-18).
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How do I convert an integer to string as part of a PostgreSQL query?
...ou'll meed to cast to an 64 bit (8-byte) integer. Try this:
SELECT * FROM table
WHERE myint = mytext::int8
The :: cast operator is historical but convenient. Postgres also conforms to the SQL standard syntax
myint = cast ( mytext as int8)
If you have literal text you want to compare with an...
Biggest GWT Pitfalls? [closed]
...nnot inspect (inside my IntelliJ debugger) what's happening in the GWT EXT table class... All you can see is that it's a JavaScriptObject. This makes it quite difficult to figure out what's gone wrong...
Not having someone on your team who knows CSS. From my experience, it didn't matter that the per...
doGet and doPost in Servlets
...enting the HTML output from a JSP, such as gathering data for display in a table.
@WebServlet("/products")
public class ProductsServlet extends HttpServlet {
@EJB
private ProductService productService;
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse ...
How can I horizontally align my divs?
... align just one div horizontally you could do this:
#MyDIV
{
display: table;
margin: 0 auto;
}
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Why can a class not be defined as protected?
...nswered Oct 6 '10 at 4:51
irreputableirreputable
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python pandas: apply a function with arguments to a series
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Exactly what I was looking for. Notably, this does not require creating a custom function just to handle a Series (or df). Perfect!
– Connor
May 24 '19 at 17:39
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Xcode - How to fix 'NSUnknownKeyException', reason: … this class is not key value coding-compliant f
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I had this error when I was trying to implement a custom ViewCell for a table. When I highlighted View controller for the XIB and connected to the elements in the CellView caused the error " this class is not key value coding-compliant for the key" once I deleted these it got rid of the error.
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How to replace a character by a newline in Vim
...is ASCII control characters list is different from a complete ASCII symbol table, in that the control characters, which are inserted into a console/pseudoterminal/Vim via the Ctrl key (haha), can be found there.
Whereas in C and most other languages, you usually use the octal codes to represent thes...