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typecast string to integer - Postgres
...urther and restrict on this coalesced field such as, for example:-
SELECT CAST(coalesce(<column>, '0') AS integer) as new_field
from <table>
where CAST(coalesce(<column>, '0') AS integer) >= 10;
share...
How do I convert an integer to string as part of a PostgreSQL query?
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Because the number can be up to 15 digits, you'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 i...
Compare two objects' properties to find differences?
...2 are of different Types (both being derived from Type T)
/// we will cast both objects down to the base Type T to ensure the property comparison is only
/// completed on COMMON properties.
/// (ex. Type T is Foo, object1 is GoodFoo and object2 is BadFoo -- both being inherited from Fo...
Static/Dynamic vs Strong/Weak
...me (static typing), but there are plenty of loopholes; you can pretty much cast a value of any type to another type of the same size---in particular, you can cast pointer types freely. Pascal was a language that was intended to be strongly typed but famously had an unforeseen loophole: a variant re...
How to serialize a lambda?
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Java 8 introduces the possibility to cast an object to an intersection of types by adding multiple bounds. In the case of serialization, it is therefore possible to write:
Runnable r = (Runnable & Serializable)() -> System.out.println("Serializable!");
...
Is it possible to print a variable's type in standard C++?
...ecltype((ci))>() << '\n';
std::cout << "decltype(static_cast<int&>(i)) is " << type_name<decltype(static_cast<int&>(i))>() << '\n';
std::cout << "decltype(static_cast<int&&>(i)) is " << type_name<decltype(stati...
What's the difference between std::move and std::forward
...a new value and continue using it.
std::forward has a single use case: to cast a templated function parameter (inside the function) to the value category (lvalue or rvalue) the caller used to pass it. This allows rvalue arguments to be passed on as rvalues, and lvalues to be passed on as lvalues, a...
Alternative to itoa() for converting integer to string C++? [duplicate]
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boost::lexical_cast works pretty well.
#include <boost/lexical_cast.hpp>
int main(int argc, char** argv) {
std::string foo = boost::lexical_cast<std::string>(argc);
}
...
Convert character to ASCII numeric value in java
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Very simple. Just cast your char as an int.
char character = 'a';
int ascii = (int) character;
In your case, you need to get the specific Character from the String first and then cast it.
char character = name.charAt(0); // This gives...
Why does (0 < 5 < 3) return true?
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My guess is because 0 < 5 is true, and true < 3 gets cast to 1 < 3 which is true.
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