In SQL Server 2017, automatic plan correction was added, which allows for the database engine to automatically use the "last known good plan" for a query that has suddenly regressed in performance.

substr (payload_name,start_pos,end_pos-start_pos+1), mind your off-by-ones. Otherwise use the instr functions and light a candle for anyone who needs to maintain the code in three years, including ...

How to Use SQL Statements in MS Excel. With most Excel spreadsheets, you enter data manually into cells and then use formulas or other functions to analyze it or perform calculations.