Dapper, 批量插入,批量更新, 以及in, like

1. 批量插入

public async Task CreateBusinessItemAsync(IEnumerable<BusinessItemsEntity> businessItemsEntities)
        {
            var bizid = businessItemsEntities.First().BizId;
            await _connection.DbConnection.ExecuteAsync("delete from BusinessItems where bizid=@BizId;", new { bizId= bizid });

            string sql = @"INSERT INTO BusinessItems
                                           ([BizId]
                                           ,[ExpiredTime]
                                           ,[DisposeTime]
                                           ,[Remark]
                                           ,[ProductCategoryCode],Status)
                                            values
                                            (@BizId
                                           ,@ExpiredTime
                                           ,@DisposeTime,@Remark, @ProductCategoryCode,@Status);";
            await _connection.DbConnection.ExecuteAsync(sql, businessItemsEntities);

对, 就是这么暴躁, 直接把列表传进去就完事了

 

 

2. 批量更新.

参考 http://www.cnblogs.com/wuyunblog/p/9456756.html

1. where in 批量更新,  这时候所有需要更新的值都是一个同样的值

 

2. 如果每条语句更新的值都不一样呢

 

3. 模糊查询

方法1 https://stackoverflow.com/questions/6030099/does-dapper-support-the-like-operator

db.Query<Remitente>("SELECT * 
                     FROM Remitentes 
                     WHERE Nombre LIKE @n", new { n = "%" + nombre + "%" })
                   .ToList();

方法2