Just did a bit of searching and do not find it. Can you point to a SQL reference that shows this is a SQL command? ThankQ.
Sorry anon, that is a snippet of Python code. Line 6 defines a function. Line 7 is a SQL command within that function.
The string order_insert is not a SQL command; the programmer could have called it anything but they chose order_insert because they are inserting a customer order into a database using SQL.
Take a look at https://www.w3schools.com/SQL/sql_quickref.asp and you can't find it because it isn't a SQL command. (Hint: SQL commands are written in CAPS.)
Actually we beat the topic to death in the distant past, if you care to look.
https://qresear.ch/?q=walnut+sauce