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create table A
(
user_id INT(10) PRIMARY KEY, #Óû§id
money INT(10) NOT NULL #½»Ò×½ð¶î
);
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create table B
(
user_id INT(10) PRIMARY KEY,
moneyrank VARCHAR(15) NOT NULL, #½ð¶î¶Î£¬ÀýÈç0-20Ôª£¬20-50ÔªµÈµÈ
count INT(10) NOT NULL #´ÎÊý
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