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eval create table t1 (a date not null, b varchar(50) not null, c varchar(50) not null, d enum('m', 'w'), primary key(a,b,c,d)) engine=$engine
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partition by key (a,b,c,d) (
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partition pa1 max_rows=20 min_rows=2,
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partition pa2 max_rows=30 min_rows=3,
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partition pa3 max_rows=30 min_rows=4,
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partition pa4 max_rows=40 min_rows=2);
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('1975-01-01', 'abcde', 'abcde','m'),
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('1983-12-31', 'cdef', 'srtbvsr', 'w'),
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('1980-10-14', 'fgbbd', 'dtzndtz', 'w'),
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('2000-06-15', 'jukg','zikhuk','m');
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select * from t1 where a<19851231;