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10.5 f544a712
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MariaDB [test]> create or replace table t1 (a int, s date, e date, period for p(s,e), primary key(a, s, p without overlaps));
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ERROR 4170 (HY000): Key `(null)` cannot explicitly include column `s`
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MariaDB [test]> create or replace table t1 (a int, s date, e date, period for p(s,e), unique(a, s, p without overlaps));
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ERROR 4170 (HY000): Key `(null)` cannot explicitly include column `s`
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It only populates the name when it is explicitly provided:
MariaDB [test]> create or replace table t1 (a int, s date, e date, period for p(s,e), unique ind(a, s, p without overlaps));
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ERROR 4170 (HY000): Key `ind` cannot explicitly include column `s`
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Of course it is not always done for UNIQUE and almost never done for PRIMARY KEY (as an explicit name for primary key is ignored and causes a warning).
Bug
Minor
