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FASTCOUNT() User-Defined Function (SQL 2000 only)

By Cade Bryant,

SQL Server's COUNT() function is a slow and expensive way to count a table's rows because it scans the entire table or index.  FASTCOUNT(), which I created, is much more efficient for this purpose - its only drawback being that it may return inaccurate results if a nonlogged (e.g., bulk) data modification operation was recently performed against the table.

Syntax: SELECT dbo.FASTCOUNT('')

Because this is a function, you can use it "inline" in any SQL statement or script, just as you would use COUNT(); however, there are some syntax differences.

Unlike COUNT(), FASTCOUNT() takes a table name as its argument (rather than a column name or wildcard), instead of requiring you to suply the table name in a FROM clause.  The advantage of this is that you can pass a variable as table name without resorting to dynamic SQL.  In other words, the following command is legal:

DECLARE @Tbl sysname
SET @Tbl = 'MyTable'

(If you were to accomplish the same results with COUNT(), you would need to use dynamic SQL to pass the table name into a FROM clause).

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