Need examples for Unicode SQL queries

I need few examples for Unicode SQL queries. Also, i need to 开发者_开发技巧understand fully about Unicode. Pls help.

Both parts of your question are way too broad. For the second part see The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!)

tsql:

insert into Table1(col1) values(N'unicode text ☻');