REPEAT()
REPEAT() — Returns a string composed of a substring repeated the specified number of times.
Synopsis
REPEAT(   string-expression, numeric-expression   ) 
Description
The REPEAT() function returns a string composed of the substring string-expression repeated
    n times where n is defined by the second argument to the
    function.
Example
The following example uses the REPEAT and the CHAR_LENGTH functions to replace a column's actual contents with a mask
    composed of the letter "X" the same length as the original column value.