unicode

MySQL: Get character-set of database or table or column?

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Here’s how I’d do it – For Schemas (or Databases – they are synonyms): SELECT default_character_set_name FROM information_schema.SCHEMATA WHERE schema_name = “mydatabasename”; For Tables: SELECT CCSA.character_set_name FROM information_schema.`TABLES` T, information_schema.`COLLATION_CHARACTER_SET_APPLICABILITY` CCSA WHERE CCSA.collation_name = T.table_collation AND T.table_schema = “mydatabasename” AND T.table_name = “tablename”; For Columns: SELECT character_set_name FROM information_schema.`COLUMNS` WHERE table_schema = “mydatabasename” AND table_name … Read more

Output Unicode strings in Windows console

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I have verified a solution here using Visual Studio 2010. Via this MSDN article and MSDN blog post. The trick is an obscure call to _setmode(…, _O_U16TEXT). Solution: #include <iostream> #include <io.h> #include <fcntl.h> int wmain(int argc, wchar_t* argv[]) { _setmode(_fileno(stdout), _O_U16TEXT); std::wcout << L”Testing unicode — English — Ελληνικά — Español.” << std::endl; } … Read more

Isn’t on big endian machines UTF-8’s byte order different than on little endian machines? So why then doesn’t UTF-8 require a BOM?

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The byte order is different on big endian vs little endian machines for words/integers larger than a byte. e.g. on a big-endian machine a short integer of 2 bytes stores the 8 most significant bits in the first byte, the 8 least significant bits in the second byte. On a little-endian machine the 8 most … Read more

Is wchar_t needed for unicode support?

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No. Technically, no. Unicode is a standard that defines code points and it does not require a particular encoding. So, you could use unicode with the UTF-8 encoding and then everything would fit in a one or a short sequence of char objects and it would even still be null-terminated. The problem with UTF-8 and … Read more

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