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

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

Branch
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REL_15_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/6763b2525cdae1b1424d8df7fcf2c669325e34eb

Modified Files
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doc/src/sgml/func.sgml | 13 +++++++++++++
1 file changed, 13 insertions(+)