sql查询一个字段多个值 sql如何查询包含某一字段的值?
sql如何查询包含某一字段的值?不同的数据库,SQL语句略有区别:1.如果是Access数据库,SQL语句应为:SELECT * FROM TableName WHERE A LIKE "*2011*
sql如何查询包含某一字段的值?
不同的数据库,SQL语句略有区别:1.如果是Access数据库,SQL语句应为:SELECT * FROM TableName WHERE A LIKE "*2011*"2.如果是Oracle数据库,SQL语句应为:SELECT * FROM TableName WHERE A LIKE " 11%"3.如果是SQL SERVER数据库,SQL语句应为:SELECT * FROM TableName WHERE A LIKE " 11%"
sql如何查询包含某一字段的值?
最简单的子查询:select * from table where date = (select max(date) from table) 或者用轮子哥讲的join自己: select * from table t1 left join (select max(date) as date from table) t2 on t1.date=t2.date where t2.date is not null