Deletes a number of characters from one string and replaces them with another string.
Parameter |
Description |
|---|---|
string-expression1 |
The string to be modified by the STUFF function. |
start |
The character position at which to begin deleting characters. The first character in the string is position 1. |
length |
The number of characters to delete. |
string-expression2 |
The string to be inserted. To delete a portion of a string using the STUFF function, use a replacement string of NULL |
LONG NVARCHAR
The following statement returns the value “chocolate pie”:
SELECT STUFF( 'chocolate cake', 11, 4, 'pie' ) FROM iq_dummy
To delete a portion of a string using STUFF, use a replacement string of NULL. To insert a string using STUFF, use a length of zero.
The STUFF function will return a NULL result in the following situations:
Any of the first three parameters is a NULL value.
Either the start or length parameter is a negative value.
The start parameter is greater than the length of string-expression1.