SQL语句(总结,完整的select语句) select distinct * from 表名 where ...group by ... having ...order by ... limit start,count 执行顺序为: from 表名 where ... group by ... select distinct * having ... order by ... limit start,count实际使用中,只是语句中某些部分的组合,而不是全部 创建表: DROP TABLE i…
1 将A表中的部分字段和B表中的部分字段作为C表的字段 SELECT a.name,b.age FROM (SELECT * from A) as a,(SELECT * from B) as b; 2 mybatis LIKE语句的使用 SELECT * FROM A where name LIKE CONCAT('%',#{nameKey,jdbcType=VARCHAR},'%' );…
1:增加INSERT INTO t_student (name, age) VALUES ('liwx', 18);2:删除DELETE FROM t_student WHERE name = 'liwx';3:修改UPDATE t_student SET age = 19 WHERE name = 'liwx';4:查找SELECT name, age FROM t_student where name = 'liwx';5:统计查询SELECT count(age) FROM t_stude…