docs: improve 'capitals' inheritance example
Adds constraints and improves wording.
Reported-by: 2552891(at)gmail(dot)com
Discussion: https://postgr.es/m/159586122762.680.1361378513036616007@wrigleys.postgresql.org
Backpatch-through: 9.5
Branch
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REL_12_STABLE
Details
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https://git.postgresql.org/pg/commitdiff/ac736e43aa70dfb3da99e8d12349b801229aa2bc
Modified Files
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doc/src/sgml/advanced.sgml | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)