public class Book { [Key] [DatabaseGenerated(DatabaseGeneratedOption.Identity)] public int Id { get; set; } [Required, MaxLength()] public string Title { get; set; } public Double? Price { get; set; } } 解决方案一: var bkList = db.Books.Select(allBooks =>
(转载)http://www.5idev.com/p-php_mysql_like.shtml MySQL LIKE 语法 LIKE 运算符用于 WHERE 表达式中,以搜索匹配字段中的指定内容,语法如下: WHERE column LIKE pattern WHERE column NOT LIKE pattern 在 LIKE 前面加上 NOT 运算符时,表示与 LIKE 相反的意思,即选择 column 不包含 pattern 的数据记录. LIKE 通常与通配符 % 一起使用,% 表示通
https://www.elastic.co/guide/en/elasticsearch/guide/current/getting-started.html Elasticsearch is a real-time distributed search and analytics engine. It allows you to explore your data at a speed and at a scale never before possible. It is used for