摘要:
CREATE TABLE tab15 ( nid INT auto_increment NOT NULL PRIMARY KEY, NAME VARCHAR (32), email VARCHAR (32) ) ENGINE = INNODB CHARSET = utf8; desc tab15; CREATE INDEX ix_nid_name ON tab15(n... 阅读全文
摘要:
index 换成 unique 阅读全文
摘要:
#创建表CREATE TABLE tab11 ( nid INT auto_increment NOT NULL PRIMARY KEY, NAME VARCHAR (32), email VARCHAR (32) ) ENGINE = INNODB CHARSET = utf8;#显示表结构 desc tab11;#创建表索引 CREATE INDEX ix_nam... 阅读全文