Create and populate table(s) to use in subsequent example(s).
CREATE TABLE my_table (eno INTEGER, edata JSON(1000));
INSERT INTO my_table (1, NEW JSON('{"name" : "Cameron", "age" : 24,
"schools" : [ {"name" : "Lake", "type" : "elementary"}, {"name" :
"Madison", "type" : "middle"}, {"name" : "Rancho", "type" : "high"},
{"name" : "UCI", "type" : "college"} ] }'));