!< (Not Less Than) (Transact-SQL)
Compares two expressions (a comparison operator). When you compare nonnull expressions, the result is TRUE if the left operand does not have a value lower than the right operand; otherwise, the result is FALSE. If either or both operands are NULL, see the topic SET ANSI_NULLS (Transact-SQL).
expression !< expression
To view Transact-SQL syntax for SQL Server 2014 (12.x) and earlier versions, see Previous versions documentation.