如何从表格中选择唯一年份

Question

I have rows in a table in SQL Server 2008

Tell me please how select only unique years from table?

PS: in this table unique year is 2013

Answer 1

Use the YEAR function, with DISTINCT like this:

SELECT DISTINCT YEAR([date])
FROM Tablename;

SQL Fiddle Demo

This will give you:

| YEAR |
--------
| 2013 |

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To use the order by clause, give it an alias and order by this alias not the original name like this:

SELECT DISTINCT YEAR([date]) AS Year
FROM Tablename
ORDER By Year;