why SELECT $ statement returns 0.0 in Sql server ?

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In SQL server i found that when we write SELECT $ statement in sql server and execute it it returns 0.0 as answer.I need to know the reason for the same.

Posted 17-Jul-13 2:55am

Nilesh Agniohtri

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[no name] 17-Jul-13 9:00am

Most likely whatever valid legitimate SELECT query that you are actually running is returning 0.0 because there are no valid records returned. Why that would be, we would have no idea since no one can read your mind.

RedDk 17-Jul-13 10:59am

SELECT $ As [reason]

[reason]
~~~~~~~~~
0.00

confirmed output ...

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Mike Meinz · Accepted Answer · 2013-07-17T03:12:00

SELECT $ is equivalent to SELECT $0.00.
SQL Server uses the $ to indicate a Money Data Type. The documentation shows many different kinds of currency symbols that SQL Server recognizes.

See money and smallmoney (Transact-SQL)[^] documentation.

Prove to yourself that SQL Server uses the $ to indicate a Money Data Type by entering this query into SQL Server Management Studio:

SQL

select $2^3

or

SQL

select $^3

The error returned will be

Msg 402, Level 16, State 1, Line 1<br />
The data types money and int are incompatible in the '^' operator.

The error message talks about two data types.
$2 being the Money value and 3 being the int value.