How can I adapt this sqlite query so that it excludes PRODNAMEs that start with a lowercase x?

How can I adapt this sqlite query so that it excludes PRODNAMEs that start
with a lowercase x?

References

Reference NO 1

http://stackoverflow.com/questions/15186211/how-can-i-adapt-this-sqlite-query-so-that-it-excludes-prodnames-that-start-with

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