Check the content in a particular location in a field, such as some XML documents in the group. I chose the Locate function of DB2, which returns the position of the specific substrings in a given string, and I get the beginning and end position of a specific string through the Locate function, and Idle is intercepted by Substr. Below is the difference between the two methods, methods, and methods, two methods - Method 1 SELECT SUBSTR (Substr (NOTECONTENT, 200, 100), 6 Locate ('<