Today, we are going to see the function – STR in SQL Server.

Syntax:

STR ( float_expression [ , length [ , decimal ] ] )

Microsoft defines the function as “Returns character data converted from numeric data. The character data is right-justified, with a specified length and decimal precision.” The key words are “right -justified” and “specified length and decimal precision”. Let us go through an example to understand these two terms. The output is clear that the value “1” is right justified to 10 positions by default.

Few more interesting observations:

1. By default, if the value is more than 10, then the value of the result is masked to “*” to 10 times.
2. If the length is specified, and the value is more than specified length, then again it masks to specified length.

Round up funda:

1. If length is not specified, then depending the decimal part, the number is rounded to next.
2. Adds more 0 to match the decimal part, if in short the number for decimal.

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