MySQL是一款關系型數據庫管理系統,用于存儲和管理數據。它支持大規模數據存儲,同時也為應用程序提供了高速的數據讀取和寫入。
CREATE TABLE mytable ( id INT(11) NOT NULL AUTO_INCREMENT, field1 VARCHAR(50) NOT NULL, field2 VARCHAR(50) NOT NULL, field3 VARCHAR(50) NOT NULL, field4 VARCHAR(50) NOT NULL, field5 VARCHAR(50) NOT NULL, field6 VARCHAR(50) NOT NULL, field7 VARCHAR(50) NOT NULL, field8 VARCHAR(50) NOT NULL, field9 VARCHAR(50) NOT NULL, field10 VARCHAR(50) NOT NULL, field11 VARCHAR(50) NOT NULL, field12 VARCHAR(50) NOT NULL, field13 VARCHAR(50) NOT NULL, field14 VARCHAR(50) NOT NULL, field15 VARCHAR(50) NOT NULL, field16 VARCHAR(50) NOT NULL, field17 VARCHAR(50) NOT NULL, field18 VARCHAR(50) NOT NULL, field19 VARCHAR(50) NOT NULL, field20 VARCHAR(50) NOT NULL, field21 VARCHAR(50) NOT NULL, field22 VARCHAR(50) NOT NULL, field23 VARCHAR(50) NOT NULL, field24 VARCHAR(50) NOT NULL, field25 VARCHAR(50) NOT NULL, field26 VARCHAR(50) NOT NULL, field27 VARCHAR(50) NOT NULL, field28 VARCHAR(50) NOT NULL, field29 VARCHAR(50) NOT NULL, field30 VARCHAR(50) NOT NULL, field31 VARCHAR(50) NOT NULL, field32 VARCHAR(50) NOT NULL, field33 VARCHAR(50) NOT NULL, field34 VARCHAR(50) NOT NULL, field35 VARCHAR(50) NOT NULL, field36 VARCHAR(50) NOT NULL, field37 VARCHAR(50) NOT NULL, field38 VARCHAR(50) NOT NULL, field39 VARCHAR(50) NOT NULL, field40 VARCHAR(50) NOT NULL, field41 VARCHAR(50) NOT NULL, field42 VARCHAR(50) NOT NULL, field43 VARCHAR(50) NOT NULL, field44 VARCHAR(50) NOT NULL, field45 VARCHAR(50) NOT NULL, field46 VARCHAR(50) NOT NULL, field47 VARCHAR(50) NOT NULL, field48 VARCHAR(50) NOT NULL, field49 VARCHAR(50) NOT NULL, field50 VARCHAR(50) NOT NULL, field51 VARCHAR(50) NOT NULL, field52 VARCHAR(50) NOT NULL, field53 VARCHAR(50) NOT NULL, field54 VARCHAR(50) NOT NULL, field55 VARCHAR(50) NOT NULL, field56 VARCHAR(50) NOT NULL, field57 VARCHAR(50) NOT NULL, field58 VARCHAR(50) NOT NULL, field59 VARCHAR(50) NOT NULL, field60 VARCHAR(50) NOT NULL, field61 VARCHAR(50) NOT NULL, field62 VARCHAR(50) NOT NULL, field63 VARCHAR(50) NOT NULL, field64 VARCHAR(50) NOT NULL, field65 VARCHAR(50) NOT NULL, field66 VARCHAR(50) NOT NULL, field67 VARCHAR(50) NOT NULL, field68 VARCHAR(50) NOT NULL, field69 VARCHAR(50) NOT NULL, field70 VARCHAR(50) NOT NULL, field71 VARCHAR(50) NOT NULL, field72 VARCHAR(50) NOT NULL, field73 VARCHAR(50) NOT NULL, field74 VARCHAR(50) NOT NULL, field75 VARCHAR(50) NOT NULL, field76 VARCHAR(50) NOT NULL, field77 VARCHAR(50) NOT NULL, field78 VARCHAR(50) NOT NULL, field79 VARCHAR(50) NOT NULL, field80 VARCHAR(50) NOT NULL, field81 VARCHAR(50) NOT NULL, field82 VARCHAR(50) NOT NULL, field83 VARCHAR(50) NOT NULL, field84 VARCHAR(50) NOT NULL, field85 VARCHAR(50) NOT NULL, field86 VARCHAR(50) NOT NULL, field87 VARCHAR(50) NOT NULL, field88 VARCHAR(50) NOT NULL, field89 VARCHAR(50) NOT NULL, field90 VARCHAR(50) NOT NULL, field91 VARCHAR(50) NOT NULL, field92 VARCHAR(50) NOT NULL, field93 VARCHAR(50) NOT NULL, field94 VARCHAR(50) NOT NULL, field95 VARCHAR(50) NOT NULL, field96 VARCHAR(50) NOT NULL, field97 VARCHAR(50) NOT NULL, field98 VARCHAR(50) NOT NULL, field99 VARCHAR(50) NOT NULL, field100 VARCHAR(50) NOT NULL, PRIMARY KEY (id) );
以上MySQL的建表語句定義了一張帶有100個字段的表,每個字段都是50個字符的VARCHAR類型,除了ID字段外,其他的字段都是不允許為空的。這樣的表適用于存儲大量的數據,并且具有高度的可擴展性和靈活性。
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