doc: add examples for array_length() and jsonb_array_length()

Bruce Momjian <bruce@momjian.us>

Commit: 2373fe78dfc9d4aa2348a86fffdf8eb9d757e9d5

Author: Bruce Momjian <bruce@momjian.us>

Date: 2022-07-09T00:23:35Z

doc:  add examples for array_length() and jsonb_array_length()

The examples show the output of array_length() and jsonb_array_length()
for empty arrays.

Discussion: https://postgr.es/m/CAKFQuwaoBmRuWdMLzLHDCFDJDX3wvfQ7egAF0bpik_BFgG1KWg@mail.gmail.com

Author: David G. Johnston

Backpatch-through: 13

Files

Path	Change	+/−
doc/src/sgml/func.sgml	modified	+13 −0

Documentation touched

doc/src/sgml/func.sgml