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单表查询
28810 edited this page Mar 5, 2019
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29 revisions
IFreeSql fsql = new FreeSql.FreeSqlBuilder()
.UseConnectionString(FreeSql.DataType.MySql, "Data Source=127.0.0.1;Port=3306;User ID=root;Password=root;Initial Catalog=cccddd;Charset=utf8;SslMode=none;Max pool size=10")
.Build();
[Table(Name = "tb_topic")]
class Topic {
[Column(IsIdentity = true, IsPrimary = true)]
public int Id { get; set; }
public int Clicks { get; set; }
public int TestTypeInfoGuid { get; set; }
public string Title { get; set; }
public DateTime CreateTime { get; set; }
}
ISelect<Topic> select => fsql.Select<Topic>();
var sql = select.Where(a => a.Id == 10).ToSql();
///SELECT a.`Id`, a.`Clicks`, a.`TestTypeInfoGuid`, a.`Title`, a.`CreateTime`
//FROM `tb_topic` a
//WHERE (a.`Id` = 10)
sql = select.Where(a => a.Id == 10 && a.Id > 10 || a.Clicks > 100).ToSql();
///SELECT a.`Id`, a.`Clicks`, a.`TestTypeInfoGuid`, a.`Title`, a.`CreateTime`
//FROM `tb_topic` a
//WHERE (a.`Id` = 10 AND a.`Id` > 10 OR a.`Clicks` > 100)
sql = select.Where(a => new []{1,2,3}.Contains(a.Id)).ToSql();
//SELECT a.`Id`, a.`Clicks`, a.`TestTypeInfoGuid`, a.`Title`, a.`CreateTime`
//FROM `tb_topic` a
//WHERE (a.`Id` in (1,2,3))