Comma operator
JSONiq follows the W3C standard for the concatenation of sequences with commas. The following explanations, provided as an informal summary for convenience, are non-normative.
Figure 27. Expr
Use a comma to concatenate two sequences, or even single items. This operator has the lowest precedence of all.
Example 40. Comma
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Result (run with Zorba): 1 2 3 4 5 6 7 8 9 10
Example 41. Comma
{ "foo" : "bar" }, [ 1 ]
Result (run with Zorba): { "foo" : "bar" } [ 1 ]
Sequences do not nest. You need to use arrays in order to nest.