SQL Query
All types of objects mentioned in this chapter can be part of a SQL query.
// create a table with column x that contains 20 million random floating numbers from 0 to 10000.0
$ t1 = table(rand(10000.0, 20000000) as x);
// calculate the average for column x
$ select avg(x) as avgx from t1;
avgx |
|---|
4999.549816 |
$ t = table(1..6 as x, 11..16 as y, 101..106 as z);
$ t;
x |
y |
z |
|---|---|---|
1 |
11 |
101 |
2 |
12 |
102 |
3 |
13 |
103 |
4 |
14 |
104 |
5 |
15 |
105 |
6 |
16 |
106 |
$ shape(select x, y from t where x>2);
4 : 2
For details about SQL query, please refer chapter Chapter 8: SQL Statements.